Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
010
FNUS56 KSTO 180956
FWFSTO
Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
256 AM PDT Tue Aug 18 2026
.DISCUSSION...
Sunny and dry conditions with near normal high temperatures
continue into the weekend, with no precipitation expected.
Temperatures trend a little warmer and humidity levels lower
through Wednesday, with locally poor recovery in the foothills. On
Friday there will be a period of breezy onshore winds with gusts
to 20 to 30 mph, slightly cooler temperatures, and higher
humidity.
CAZ121-190015-
W. Shasta County Above 3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........83-91.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........17-22 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Ridges/Upr Slopes....North winds up to 7 mph shifting to the
southeast in the afternoon.
* CWR....................0 percent.
* Mixing Height..........8100 ft AGL.
* Chance of thunder......2 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........58-66.
* 24 HR Trend..........Little change.
* Max Humidity...........37-52 percent.
* 24 HR Trend..........9 percent down.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......2 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........81-89.
* Min Humidity...........16-30 percent.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming south 4
to 9 mph in the afternoon.
* Mixing Height..........7800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ122-190015-
W. Shasta County 1000-3000 ft-
Including the city of Whiskeytown
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........97-102 lower elevations...except 90-96
higher elevations.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........15-20 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southeast
up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming
southeast up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7600 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-71 lower elevations...except 59-66
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........40-55 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 8 mph.
* Ridges/Upr Slopes....Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........95-100 lower elevations...except 89-94
higher elevations.
* Min Humidity...........18-26 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southeast
up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming
southeast up to 8 mph in the afternoon.
* Mixing Height..........6900 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ123-190015-
Shasta Lake Area & 1-5 1000-3000 ft-
Including the city of Shasta Lake, Sims
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-99.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........12-17 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 8 mph shifting to the
south up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7700 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-69 lower elevations...except 59-67
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........38-53 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........South winds up to 8 mph shifting to the
north after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99 lower elevations...except 89-95
higher elevations.
* Min Humidity...........12-27 percent.
* 20-Foot Winds..........Northeast winds up to 7 mph shifting to
the south up to 8 mph in the afternoon.
* Mixing Height..........7200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ124-190015-
Shasta Metro-
Including the city of Redding, Anderson
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........99-104.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........11-16 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
south up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........65-70.
* 24 HR Trend..........Little change.
* Max Humidity...........44-50 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........South winds up to 7 mph shifting to the
north up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........98-103.
* Min Humidity...........13-20 percent.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
south up to 8 mph in the afternoon.
* Mixing Height..........6800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ125-190015-
Shasta County Foothills 1000-3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........4 degrees warmer.
* Min Humidity...........12-17 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........6500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-69.
* 24 HR Trend..........Little change.
* Max Humidity...........40-45 percent.
* 24 HR Trend..........10 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny then becoming partly cloudy
late in the morning then becoming mostly sunny.
* Max Temperature........93-98.
* Min Humidity...........15-22 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest
up to 7 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming
southwest up to 7 mph in the afternoon.
* Mixing Height..........6500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ126-190015-
E. Shasta /S. Cascades Above 3000 ft-
Including the city of Shingletown
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........81-91.
* 24 HR Trend..........5 degrees warmer.
* Min Humidity...........14-24 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds up to 7 mph shifting to the
west up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Northeast winds up to 7 mph shifting to the
southwest up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6800 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........52-62.
* 24 HR Trend..........Little change.
* Max Humidity...........42-56 percent.
* 24 HR Trend..........10 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...South winds up to 7 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....Southwest winds up to 7 mph shifting to the
northeast after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........80-90.
* Min Humidity...........13-26 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest
4 to 10 mph with local gusts up to 20 mph in the afternoon.
* Ridges/Upr Slopes....East winds up to 7 mph shifting to the
southwest 4 to 10 mph with local gusts up to 20 mph in the
afternoon.
* Mixing Height..........6800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ127-190015-
Burney Basin-
Including the city of Burney
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........86-92 lower elevations...except 79-88
higher elevations.
* 24 HR Trend..........4 degrees warmer.
* Min Humidity...........16-22 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 7 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming
northwest up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7800 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........50-57.
* 24 HR Trend..........Little change.
* Max Humidity...........43-57 percent.
* 24 HR Trend..........10 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southwest winds up to 7 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....Southwest winds up to 7 mph in the evening
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........86-92 lower elevations...except 79-89
higher elevations.
* Min Humidity...........15-27 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 8 mph with local gusts up to 25 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 4
to 9 mph with local gusts up to 25 mph in the afternoon.
* Mixing Height..........8200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ128-190015-
Lassen Volcanic NP-
Including the city of Lassen National Park
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........72-79.
* 24 HR Trend..........Little change.
* Min Humidity...........16-24 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southeast winds up to 7 mph shifting to
the west up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7900 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........50-55.
* 24 HR Trend..........Little change.
* Max Humidity...........38-44 percent.
* 24 HR Trend..........12 percent down.
* 20-Foot Winds..........West winds up to 7 mph shifting to the
northeast after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy then becoming mostly sunny
late in the morning then becoming partly cloudy then becoming
sunny late in the afternoon.
* Max Temperature........72-80.
* Min Humidity...........15-27 percent.
* 20-Foot Winds..........South winds 4 to 9 mph. Local gusts up to
20 mph in the afternoon.
* Mixing Height..........7700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ129-190015-
Sierra (Tehama-Plumas) 1000-3000 ft-
Including the city of Paradise
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........89-95.
* 24 HR Trend..........Little change.
* Min Humidity...........17-24 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 5 to 11 mph shifting to the
southwest up to 7 mph in the afternoon.
* Ridges/Upr Slopes....North winds 4 to 9 mph shifting to the
southwest up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........65-71.
* 24 HR Trend..........Little change.
* Max Humidity...........32-45 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph becoming east up
to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........89-95.
* Min Humidity...........15-26 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 4 to 9 mph shifting to the
southwest up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Northeast winds up to 7 mph shifting to the
southwest up to 8 mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ130-190015-
Sierra (Tehama-Plumas) Above 3000 ft-
Including the city of Mineral, Quincy
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........82-90 lower elevations...except 76-84
higher elevations.
* 24 HR Trend..........4 degrees warmer.
* Min Humidity...........15-23 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 5 to 11 mph shifting to the
southwest up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Northeast winds 5 to 11 mph shifting to the
southwest up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........52-62.
* 24 HR Trend..........Little change.
* Max Humidity...........37-52 percent.
* 24 HR Trend..........9 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southwest winds up to 7 mph shifting to the
northeast after midnight.
* Ridges/Upr Slopes....Southwest winds up to 7 mph shifting to the
northeast after midnight.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........82-90 lower elevations...except 76-84
higher elevations.
* Min Humidity...........13-28 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...East winds up to 8 mph shifting to the
southwest 4 to 9 mph with local gusts up to 20 mph in the
afternoon.
* Ridges/Upr Slopes....East winds up to 8 mph shifting to the
southwest 4 to 10 mph with local gusts up to 20 mph in the
afternoon.
* Mixing Height..........6400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ131-190015-
N. Motherlode 1000-3000 ft-
Including the city of Auburn, Grass Valley, Colfax, Nevada City
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95.
* 24 HR Trend..........Little change.
* Min Humidity...........19-24 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Northwest winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........4700 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-68.
* 24 HR Trend..........Little change.
* Max Humidity...........44-54 percent.
* 24 HR Trend..........9 percent down.
* 20-Foot Winds..........Southeast winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95.
* Min Humidity...........18-25 percent.
* 20-Foot Winds..........East winds up to 5 mph shifting to the
southwest up to 7 mph in the afternoon.
* Mixing Height..........4800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ132-190015-
Sierra (Yuba-Placer) 3000-5000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........82-90.
* 24 HR Trend..........Little change.
* Min Humidity...........19-24 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Southeast winds up to 7 mph shifting to
the southwest up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........57-67.
* 24 HR Trend..........Little change.
* Max Humidity...........36-50 percent.
* 24 HR Trend..........9 percent down.
* 20-Foot Winds..........East winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........84-90.
* Min Humidity...........17-27 percent.
* 20-Foot Winds..........East winds up to 6 mph shifting to the
southwest 4 to 9 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ133-190015-
Sierra (Sierra-Placer) Above 5000 ft-
Including the city of Blue Canyon, Kingvale, Donner Peak
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........74-83.
* 24 HR Trend..........Little change.
* Min Humidity...........19-25 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........Southwest winds up to 8 mph. Local gusts
up to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........51-61.
* 24 HR Trend..........Little change.
* Max Humidity...........37-51 percent.
* 24 HR Trend..........10 percent down.
* 20-Foot Winds..........Southwest winds up to 7 mph shifting to
the east after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........75-83.
* Min Humidity...........17-32 percent.
* 20-Foot Winds..........Southeast winds up to 6 mph shifting to
the southwest 6 to 12 mph with local gusts up to 25 mph in the
afternoon.
* Mixing Height..........6100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ134-190015-
Central Motherlode 1000-3000 ft-
Including the city of Cameron Park, Shingle Springs, Placerville,
Cool, Jackson
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........89-94.
* 24 HR Trend..........Little change.
* Min Humidity...........20-25 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 7 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........4600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........64-69.
* 24 HR Trend..........Little change.
* Max Humidity...........44-55 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95.
* Min Humidity...........18-26 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 7 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph.
* Mixing Height..........4500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ135-190015-
Sierra 3000-5000 ft-
Including the city of Pollock Pines
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........84-90.
* 24 HR Trend..........Little change.
* Min Humidity...........21-26 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west up
to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4800 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........59-67 lower elevations...except 67-72
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........40-54 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Drainage winds up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........85-91.
* Min Humidity...........16-30 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west up
to 7 mph in the afternoon.
* Mixing Height..........5000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ136-190015-
Sierra (El Dorado-Amador) Above 5000 ft-
Including the city of Carson Pass
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........73-83.
* 24 HR Trend..........Little change.
* Min Humidity...........22-28 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Southwest winds 4 to 9 mph. Local gusts up
to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5300 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........53-59.
* 24 HR Trend..........Little change.
* Max Humidity...........39-53 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* Ridges/Upr Slopes....West winds up to 8 mph shifting to the east
up to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy then becoming mostly sunny
late in the morning then becoming partly cloudy then becoming
mostly sunny late in the afternoon.
* Max Temperature........73-83.
* Min Humidity...........19-34 percent.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Southwest winds 4 to 9 mph.
* Mixing Height..........5800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ137-190015-
Southern Motherlode 1000-3000 ft-
Including the city of Sonora, Angels Camp
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95.
* 24 HR Trend..........Little change.
* Min Humidity...........20-25 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...West winds 4 to 9 mph.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 4
to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-70.
* 24 HR Trend..........Little change.
* Max Humidity...........44-55 percent.
* 24 HR Trend..........6 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 7 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....Variable winds up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........91-96.
* Min Humidity...........14-26 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up
to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west up
to 8 mph in the afternoon.
* Mixing Height..........4600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ138-190015-
Sierra (Cal-Tuo) 3000-5000 ft-
Including the city of Twain Harte, Arnold
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........84-90.
* 24 HR Trend..........Little change.
* Min Humidity...........22-27 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southeast winds up to 7 mph shifting to the
west up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Southeast winds up to 7 mph shifting to the
west 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4800 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-70.
* 24 HR Trend..........Little change.
* Max Humidity...........40-55 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds up to 7 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....Northwest winds up to 7 mph in the evening
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........85-91.
* Min Humidity...........17-32 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest
up to 8 mph in the afternoon.
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming west up
to 8 mph in the afternoon.
* Mixing Height..........5200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ139-190015-
Sierra (Cal-Tuo) Above 5000 ft-
Including the city of Twain Harte, Arnold
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........73-83.
* 24 HR Trend..........Little change.
* Min Humidity...........23-28 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Southwest winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........5400 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........52-62.
* 24 HR Trend..........Little change.
* Max Humidity...........45-60 percent.
* 24 HR Trend..........6 percent down.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Northwest winds up to 8 mph shifting to the
east up to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........74-84.
* Min Humidity...........17-32 percent.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Southeast winds up to 7 mph shifting to the
southwest 6 to 12 mph in the afternoon.
* Mixing Height..........6000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ140-190015-
Tehama Co Coast Range Above 3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........77-86.
* 24 HR Trend..........Little change.
* Min Humidity...........25-30 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........7400 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........61-66.
* 24 HR Trend..........Little change.
* Max Humidity...........41-49 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........West winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........77-85.
* Min Humidity...........22-37 percent.
* 20-Foot Winds..........East winds 4 to 9 mph.
* Mixing Height..........7200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ141-190015-
W Tehama Co Foothills 1000-3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........95-100 lower elevations...except 85-90
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........18-23 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 7 mph shifting to the
east up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6800 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........70-75 lower elevations...except 64-72
higher elevations.
* 24 HR Trend..........Little change.
* Max Humidity...........38-43 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........West winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........94-99 lower elevations...except 86-91
higher elevations.
* Min Humidity...........20-35 percent.
* 20-Foot Winds..........North winds up to 5 mph shifting to the
southeast 4 to 9 mph with local gusts up to 20 mph in the
afternoon.
* Mixing Height..........6000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ142-190015-
N. Sac Valley in Tehama County-
Including the city of Red Bluff
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........97-102.
* 24 HR Trend..........Little change.
* Min Humidity...........17-22 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
south up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6400 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........66-71.
* 24 HR Trend..........Little change.
* Max Humidity...........47-59 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........South winds up to 7 mph shifting to the
northwest up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........96-101.
* Min Humidity...........18-32 percent.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
south 4 to 9 mph in the afternoon.
* Mixing Height..........5900 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ143-190015-
Glenn/Colusa Coast Range Above 3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........77-87.
* 24 HR Trend..........Little change.
* Min Humidity...........25-32 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds up to 7 mph shifting to
the southeast 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6900 ft AGL.
* Chance of thunder......1 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........63-69.
* 24 HR Trend..........Little change.
* Max Humidity...........41-50 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........78-86.
* Min Humidity...........25-40 percent.
* 20-Foot Winds..........Northeast winds up to 7 mph shifting to
the southeast 5 to 10 mph in the afternoon.
* Mixing Height..........7200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ144-190015-
Central Glenn Co & Interstate 5-
Including the city of Willows, Orland
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
* 24 HR Trend..........Little change.
* Min Humidity...........25-33 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
southeast up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-69.
* 24 HR Trend..........Little change.
* Max Humidity...........61-76 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........South winds up to 7 mph shifting to the
north up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........94-99.
* Min Humidity...........25-40 percent.
* 20-Foot Winds..........Northeast winds up to 5 mph shifting to
the southeast 4 to 9 mph in the afternoon.
* Mixing Height..........5600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ145-190015-
Eastern Glenn County-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
* 24 HR Trend..........Little change.
* Min Humidity...........28-33 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
south up to 6 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-68.
* 24 HR Trend..........Little change.
* Max Humidity...........70-77 percent.
* 24 HR Trend..........6 percent down.
* 20-Foot Winds..........Southeast winds up to 6 mph in the evening
becoming variable less than 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........94-99.
* Min Humidity...........28-37 percent.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
south up to 8 mph in the afternoon.
* Mixing Height..........5100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ146-190015-
Butte County Below 1000 ft-
Including the city of Chico, Oroville, Gridley
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........95-100.
* 24 HR Trend..........Little change.
* Min Humidity...........20-29 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........South winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........4200 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-68.
* 24 HR Trend..........Little change.
* Max Humidity...........56-71 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........Southeast winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........95-100.
* Min Humidity...........18-33 percent.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
south up to 8 mph in the afternoon.
* Mixing Height..........4400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ147-190015-
W. Glenn/Colusa Foothills 1000-3000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97 lower elevations...except 85-90
higher elevations.
* 24 HR Trend..........Little change.
* Min Humidity...........21-27 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming east 5 to
8 mph in the afternoon.
* Ridges/Upr Slopes....North winds up to 7 mph shifting to the east
5 to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........63-71.
* 24 HR Trend..........Little change.
* Max Humidity...........46-61 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...West winds up to 7 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....West winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........93-98 lower elevations...except 86-91
higher elevations.
* Min Humidity...........21-33 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southeast
5 to 8 mph in the afternoon.
* Ridges/Upr Slopes....North winds up to 7 mph shifting to the
southeast 5 to 10 mph in the afternoon.
* Mixing Height..........6700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ148-190015-
Central Colusa County Incl. I-5-
Including the city of Williams
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........Little change.
* Min Humidity...........27-36 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........4600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........63-68.
* 24 HR Trend..........Little change.
* Max Humidity...........66-81 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds up to 7 mph shifting to
the northwest up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........94-99.
* Min Humidity...........27-42 percent.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
southeast 4 to 9 mph in the afternoon.
* Mixing Height..........6100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ149-190015-
Eastern Colusa County-
Including the city of Colusa
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........Little change.
* Min Humidity...........29-35 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
south up to 5 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........3800 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........61-66.
* 24 HR Trend..........Little change.
* Max Humidity...........79-86 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........South winds up to 5 mph in the evening
becoming variable less than 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........93-98.
* Min Humidity...........29-39 percent.
* 20-Foot Winds..........Variable winds less than 5 mph becoming
southeast up to 6 mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ150-190015-
Sutter/Yuba counties below 1000 ft-
Including the city of Yuba City, Beale AFB
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
* 24 HR Trend..........Little change.
* Min Humidity...........22-28 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........3700 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........60-65.
* 24 HR Trend..........Little change.
* Max Humidity...........63-78 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........Southeast winds up to 6 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........94-99.
* Min Humidity...........20-34 percent.
* 20-Foot Winds..........South winds up to 7 mph.
* Mixing Height..........4000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ151-190015-
Yolo / Solano County Hills-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........86-95.
* 24 HR Trend..........Little change.
* Min Humidity...........21-36 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming east 4
to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy in the evening then becoming
mostly cloudy.
* Min Temperature........59-69.
* 24 HR Trend..........Little change.
* Max Humidity...........65-80 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Ridges/Upr Slopes....West winds 5 to 8 mph in the evening
becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........85-95.
* Min Humidity...........31-46 percent.
* 20-Foot Winds..........
* Ridges/Upr Slopes....Variable winds up to 7 mph becoming
southeast 5 to 8 mph in the afternoon.
* Mixing Height..........5200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ152-190015-
W. Yolo County including Capay/I-505-
Including the city of Esparto, Winters
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........95-100.
* 24 HR Trend..........Little change.
* Min Humidity...........19-24 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
east up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........60-65.
* 24 HR Trend..........Little change.
* Max Humidity...........68-83 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........96-101.
* Min Humidity...........23-31 percent.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
southeast up to 7 mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ153-190015-
C. Yolo/NE Solano including Woodland-
Including the city of Woodland, Dixon
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........Little change.
* Min Humidity...........20-29 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northeast winds 4 to 9 mph shifting to the
south up to 7 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4100 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........58-63.
* 24 HR Trend..........Little change.
* Max Humidity...........84-90 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........South winds 4 to 9 mph with local gusts up
to 20 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........92-97.
* Min Humidity...........23-38 percent.
* 20-Foot Winds..........South winds up to 7 mph.
* Mixing Height..........4100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ154-190015-
Sac Metro/W. El Dorado/Amador County-
Including the city of Lincoln, Roseville, Sacramento, Elk Grove,
Folsom
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........Little change.
* Min Humidity...........22-28 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........4000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........58-63.
* 24 HR Trend..........Little change.
* Max Humidity...........70-85 percent.
* 24 HR Trend..........6 percent down.
* 20-Foot Winds..........South winds 4 to 9 mph. Local gusts up to
20 mph in the evening.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........93-98.
* Min Humidity...........19-34 percent.
* 20-Foot Winds..........Southwest winds up to 7 mph.
* Mixing Height..........3700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ155-190015-
C. Solano County including Fairfield-
Including the city of Fairfield, Vacaville
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........88-93.
* 24 HR Trend..........Little change.
* Min Humidity...........30-35 percent.
* 24 HR Trend..........4 percent up.
* 20-Foot Winds..........Southwest winds 7 to 13 mph. Local gusts
up to 30 mph decreasing to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........2400 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........59-64.
* 24 HR Trend..........Little change.
* Max Humidity...........82-89 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds 8 to 14 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy early in the morning then
clearing.
* Max Temperature........88-93.
* Min Humidity...........29-44 percent.
* 20-Foot Winds..........Southwest winds 6 to 12 mph with local
gusts up to 25 mph.
* Mixing Height..........2300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ156-190015-
SW Solano County including Vallejo-
Including the city of Vallejo, Benicia
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........78-88.
* 24 HR Trend..........Little change.
* Min Humidity...........37-52 percent.
* 24 HR Trend..........4 percent up.
* 20-Foot Winds..........Southwest winds 9 to 15 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* Mixing Height..........1400 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........57-62.
* 24 HR Trend..........Little change.
* Max Humidity...........88-95 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds 10 to 17 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
late in the morning then becoming mostly sunny.
* Max Temperature........78-88.
* Min Humidity...........51-66 percent.
* 20-Foot Winds..........Southwest winds 9 to 15 mph with local
gusts up to 25 mph.
* Mixing Height..........1700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ157-190015-
Sacramento County Delta-
Including the city of Walnut Grove
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........88-93.
* 24 HR Trend..........Little change.
* Min Humidity...........29-34 percent.
* 24 HR Trend..........4 percent up.
* 20-Foot Winds..........West winds 8 to 14 mph with local gusts up
to 25 mph.
* CWR....................0 percent.
* Mixing Height..........2700 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........58-63.
* 24 HR Trend..........Little change.
* Max Humidity...........84-89 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Southwest winds 8 to 14 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........86-92.
* Min Humidity...........32-45 percent.
* 20-Foot Winds..........West winds 7 to 13 mph.
* Mixing Height..........2700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ158-190015-
San Joaquin County Delta-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95.
* 24 HR Trend..........Little change.
* Min Humidity...........28-33 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........West winds 6 to 12 mph. Local gusts up to
20 mph in the morning.
* CWR....................0 percent.
* Mixing Height..........3000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........58-63.
* 24 HR Trend..........Little change.
* Max Humidity...........81-87 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........West winds 5 to 11 mph. Local gusts up to
20 mph in the evening.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........90-95.
* Min Humidity...........28-43 percent.
* 20-Foot Winds..........West winds 4 to 9 mph. Local gusts up to
20 mph in the afternoon.
* Mixing Height..........3100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ159-190015-
C. San Joaquin County including Stockton-
Including the city of Stockton, Lodi
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97.
* 24 HR Trend..........Little change.
* Min Humidity...........25-30 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Northwest winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........3500 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........59-64.
* 24 HR Trend..........Little change.
* Max Humidity...........74-84 percent.
* 24 HR Trend..........6 percent down.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* Min Humidity...........25-35 percent.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* Mixing Height..........3800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ160-190015-
Tracy Triangle Below 1000 ft-
Including the city of Tracy
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........91-96.
* 24 HR Trend..........Little change.
* Min Humidity...........21-29 percent.
* 24 HR Trend..........7 percent down.
* 20-Foot Winds..........Northwest winds 5 to 11 mph. Local gusts
up to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........3400 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........60-65.
* 24 HR Trend..........Little change.
* Max Humidity...........63-78 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........West winds 5 to 11 mph with local gusts up
to 20 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy early in the morning then
clearing.
* Max Temperature........93-98.
* Min Humidity...........19-31 percent.
* 20-Foot Winds..........Northwest winds 4 to 9 mph. Local gusts up
to 20 mph in the afternoon.
* Mixing Height..........3800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ161-190015-
NE San Joaquin Valley Below 1000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* 24 HR Trend..........Little change.
* Min Humidity...........23-28 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds 5 to 11 mph. Local gusts
up to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4000 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........64-69.
* 24 HR Trend..........Little change.
* Max Humidity...........51-65 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
* Min Humidity...........18-28 percent.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* Mixing Height..........4300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ162-190015-
E. Diablo Range Above 1000 ft-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........87-93.
* 24 HR Trend..........Little change.
* Min Humidity...........18-25 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........
* CWR....................0 percent.
* Mixing Height..........4300 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........61-71.
* 24 HR Trend..........Little change.
* Max Humidity...........34-49 percent.
* 24 HR Trend..........16 percent down.
* 20-Foot Winds..........
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........89-95.
* Min Humidity...........14-26 percent.
* 20-Foot Winds..........
* Mixing Height..........5000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ163-190015-
W. Stanislaus County Above 1000 ft & I-5-
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97.
* 24 HR Trend..........Little change.
* Min Humidity...........25-30 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........North winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........3700 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........62-67.
* 24 HR Trend..........Little change.
* Max Humidity...........56-71 percent.
* 24 HR Trend..........12 percent down.
* 20-Foot Winds..........West winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........400 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* Min Humidity...........19-31 percent.
* 20-Foot Winds..........North winds up to 8 mph.
* Mixing Height..........4700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
CAZ164-190015-
C. Stanislaus County including Modesto-
Including the city of Modesto, Turlock
256 AM PDT Tue Aug 18 2026
.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97.
* 24 HR Trend..........Little change.
* Min Humidity...........27-32 percent.
* 24 HR Trend..........4 percent down.
* 20-Foot Winds..........Northwest winds 6 to 12 mph.
* CWR....................0 percent.
* Mixing Height..........3600 ft AGL.
* Chance of thunder......0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........60-65.
* 24 HR Trend..........Little change.
* Max Humidity...........68-79 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........Northwest winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
* Min Humidity...........21-32 percent.
* 20-Foot Winds..........Northwest winds 4 to 9 mph.
* Mixing Height..........4400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.
$$
.Extended...
...Shasta County Mountains and Coastal Range
.WEDNESDAY NIGHT...Clear. Lows 56 to 66. West winds up to 10 mph.
.THURSDAY...Mostly sunny. Highs 81 to 91. South winds 5 to
15 mph.
.THURSDAY NIGHT...Partly cloudy. Lows 56 to 66. West winds 5 to
15 mph.
.FRIDAY...Mostly sunny. Highs 76 to 86. Southwest winds up to
10 mph.
.FRIDAY NIGHT...Cooler, clear. Lows 49 to 59. West winds up to
10 mph.
.SATURDAY...Sunny. Highs 76 to 86. South winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 50 to 60. Variable less than 5 mph.
...Northern Sierra and Lassen Park
.WEDNESDAY NIGHT...Mostly clear. Lows 56 to 66. East winds up to
10 mph.
.THURSDAY...Mostly sunny. Highs 83 to 92. South winds up to
10 mph.
.THURSDAY NIGHT...Mostly cloudy. Lows 56 to 66. East winds up to
10 mph.
.FRIDAY...Partly cloudy. Highs 79 to 88. South winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 52 to 62. Variable less than
5 mph.
.SATURDAY...Sunny. Highs 78 to 86. South winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 51 to 61. Variable less than 5 mph.
...Sierra Nevada Foothills
.WEDNESDAY NIGHT...Mostly clear. Lows 64 to 70. East winds up to
10 mph.
.THURSDAY...Mostly sunny. Highs 90 to 95. Southwest winds up to
10 mph.
.THURSDAY NIGHT...Mostly cloudy. Lows 64 to 70. East winds up to
10 mph.
.FRIDAY...Mostly sunny. Highs 86 to 91. Southwest winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 65. Southeast winds up
to 10 mph.
.SATURDAY...Sunny. Highs 85 to 90. Variable less than 5 mph.
.SATURDAY NIGHT...Clear. Lows 59 to 65. Variable less than 5 mph.
...Central Valley and Delta
.WEDNESDAY NIGHT...Mostly clear. Lows 59 to 65. South winds 5 to
15 mph.
.THURSDAY...Mostly sunny. Highs 92 to 97. Southwest winds 5 to
15 mph.
.THURSDAY NIGHT...Mostly cloudy. Lows 60 to 65. South winds 5 to
15 mph.
.FRIDAY...Mostly sunny. Highs 89 to 94. Southwest winds 5 to
15 mph.
.FRIDAY NIGHT...Mostly clear. Lows 58 to 63. Southwest winds up
to 10 mph.
.SATURDAY...Sunny. Highs 88 to 93. West winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 57 to 62. Southwest winds up to
10 mph.
$$