Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
405
FNUS56 KSTO 170709
FWFSTO
Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
1209 AM PDT Sat May 17 2025
NOTE: THIS PRODUCT HAS UPDATED FORECAST DATA BUT THE FORECAST
DISCUSSION IS FROM THE PREVIOUS DAY
...FIRE WEATHER WATCH IS IN EFFECT FROM 8 AM SUNDAY TO 8 PM MONDAY
FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 215,216,217,218
AND 219 BELOW 1000 FEET...
.DISCUSSION...
Cooler today with a slight (10-20%) chance of showers or
thunderstorms Saturday into the evening over the mountains and
foothills. Critical fire weather conditions are expected on
Sunday through Monday in the Valley and Delta due to gusty north
winds and low relative humidity. Elevated fire weather conditions
then continue into mid-week, alongside hot and dry weather.
CAZ213-180015-
Eastern Portion of Shasta-Trinity NF-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Partly cloudy with a slight chance of
showers in the morning, then mostly sunny in the afternoon.
* Max Temperature........71-76 lower elevations...except 58-68
higher elevations.
* 24 HR Trend..........11 degrees cooler.
* Min Humidity...........29-39 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 7 to 13 mph. Local gusts up
to 20 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 7 to 13 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...10 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........44-49 lower elevations...except 34-43
higher elevations.
* 24 HR Trend..........8 degrees cooler.
* Max Humidity...........60-75 percent.
* 24 HR Trend..........7 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 6 to 12 mph. Local gusts up to
20 mph in the evening.
* Ridges/Upr Slopes....North winds 6 to 12 mph. Local gusts up to
25 mph in the evening.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........74-79 lower elevations...except 61-71
higher elevations.
* Min Humidity...........25-40 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 5 to 11 mph.
* Ridges/Upr Slopes....North winds 5 to 11 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ214-180015-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
partly cloudy. A chance of showers and a slight chance of
thunderstorms.
* Max Temperature........62-67 lower elevations...except 55-60
higher elevations.
* 24 HR Trend..........11 degrees cooler.
* Min Humidity...........33-40 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming northwest
5 to 11 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 5 to 11 mph.
* CWR....................10 percent.
* CHANCE OF THUNDER...21 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........30-39.
* 24 HR Trend..........12 degrees cooler.
* Max Humidity...........78-88 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds 5 to 11 mph.
* Ridges/Upr Slopes....Northeast winds 5 to 11 mph. Local gusts up
to 25 mph in the evening.
* CWR....................0 percent.
* CHANCE OF THUNDER...2 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........64-69 lower elevations...except 57-63
higher elevations.
* Min Humidity...........23-38 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming north 4
to 9 mph with local gusts up to 20 mph in the afternoon.
* Ridges/Upr Slopes....North winds 5 to 11 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ215-180015-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
1209 AM PDT Sat May 17 2025
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........76-81.
* 24 HR Trend..........8 degrees cooler.
* Min Humidity...........21-26 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds 7 to 13 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...4 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........49-54.
* 24 HR Trend..........6 degrees cooler.
* Max Humidity...........51-61 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds 8 to 14 mph with local
gusts up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........79-84.
* Min Humidity...........16-24 percent.
* 20-Foot Winds..........North winds 9 to 15 mph with local gusts
up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ216-180015-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
1209 AM PDT Sat May 17 2025
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........76-81.
* 24 HR Trend..........8 degrees cooler.
* Min Humidity...........24-30 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........North winds 7 to 13 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...2 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........51-56.
* 24 HR Trend..........Little change.
* Max Humidity...........51-66 percent.
* 24 HR Trend..........13 percent down.
* 20-Foot Winds..........Northwest winds 8 to 14 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........79-84.
* Min Humidity...........17-30 percent.
* 20-Foot Winds..........Northwest winds 12 to 18 mph with local
gusts up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ217-180015-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-
1209 AM PDT Sat May 17 2025
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........76-81.
* 24 HR Trend..........9 degrees cooler.
* Min Humidity...........28-36 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........West winds 7 to 13 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........49-55.
* 24 HR Trend..........Little change.
* Max Humidity...........61-76 percent.
* 24 HR Trend..........8 percent down.
* 20-Foot Winds..........Northwest winds 8 to 14 mph with local
gusts up to 25 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........79-84.
* Min Humidity...........16-29 percent.
* 20-Foot Winds..........Northwest winds 8 to 14 mph with Local
gusts up to 20 mph increasing to 30 mph in the
afternoon....except northwest 9 to 15 mph with local gusts up to
30 mph west of the Sacramento River.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ218-180015-
Carquinez Strait and Delta-
1209 AM PDT Sat May 17 2025
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........72-77.
* 24 HR Trend..........8 degrees cooler.
* Min Humidity...........37-45 percent.
* 24 HR Trend..........4 percent up.
* 20-Foot Winds..........West winds 14 to 20 mph with local gusts
up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........51-56.
* 24 HR Trend..........Little change.
* Max Humidity...........68-75 percent.
* 24 HR Trend..........5 percent down.
* 20-Foot Winds..........West winds 10 to 16 mph. Local gusts up to
30 mph in the evening.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........77-83.
* Min Humidity...........26-41 percent.
* 20-Foot Winds..........Northwest winds 10 to 16 mph with local
gusts up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ219-180015-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-
1209 AM PDT Sat May 17 2025
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........72-77.
* 24 HR Trend..........10 degrees cooler.
* Min Humidity...........35-40 percent.
* 24 HR Trend..........9 percent up.
* 20-Foot Winds..........West winds 13 to 19 mph with local gusts
up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........49-54.
* 24 HR Trend..........4 degrees cooler.
* Max Humidity...........73-88 percent.
* 24 HR Trend..........5 percent up.
* 20-Foot Winds..........West winds 9 to 15 mph. Local gusts up to
30 mph in the evening.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........77-83.
* Min Humidity...........17-31 percent.
* 20-Foot Winds..........Northwest winds 11 to 17 mph with local
gusts up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ263-279-180015-
Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-
Glenn Unit-Eastern Mendocino NF-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Partly cloudy in the morning then
clearing.
* Max Temperature........70-75 lower elevations...except 54-64
higher elevations.
* 24 HR Trend..........10 degrees cooler.
* Min Humidity...........26-32 percent lower elevations...except
36-47 percent high elevations.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 16 to 22 mph with local
gusts up to 30 mph.
* Ridges/Upr Slopes....Northwest winds 16 to 22 mph with local
gusts up to 35 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........48-53 lower elevations...except 36-45
higher elevations.
* 24 HR Trend..........5 degrees cooler.
* Max Humidity...........51-66 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 14 to 20 mph with local
gusts up to 30 mph.
* Ridges/Upr Slopes....Northwest winds 14 to 20 mph with local
gusts up to 35 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........74-79 lower elevations...except 58-68
higher elevations.
* Min Humidity...........25-40 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 10 to 16 mph with local
gusts up to 25 mph.
* Ridges/Upr Slopes....Northwest winds 10 to 16 mph with local
gusts up to 30 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ266-180015-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then
clearing. A slight chance of showers.
* Max Temperature........70-75 lower elevations...except 64-69
higher elevations.
* 24 HR Trend..........9 degrees cooler.
* Min Humidity...........27-37 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 5 to 11 mph. Local gusts up
to 25 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 5 to 11 mph.
* CWR....................10 percent.
* CHANCE OF THUNDER...9 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........44-52.
* 24 HR Trend..........6 degrees cooler.
* Max Humidity...........50-61 percent.
* 24 HR Trend..........11 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 6 to 12 mph with local gusts up
to 25 mph.
* Ridges/Upr Slopes....North winds 6 to 12 mph. Local gusts up to
25 mph in the evening.
* CWR....................0 percent.
* CHANCE OF THUNDER...2 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........73-78 lower elevations...except 67-73
higher elevations.
* Min Humidity...........19-34 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 7 to 13 mph with local gusts
up to 30 mph.
* Ridges/Upr Slopes....Northwest winds 7 to 13 mph with local gusts
up to 25 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ220-267-180015-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Toulumne-Calaveras Unit-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and Eldorado Units-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
mostly sunny. At higher elevations, a slight chance of showers in
the afternoon.
* Max Temperature........68-73 lower elevations...except 63-68
higher elevations.
* 24 HR Trend..........10 degrees cooler.
* Min Humidity...........37-45 percent.
* 24 HR Trend..........7 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southwest winds 4 to 9 mph.
* Ridges/Upr Slopes....Southwest winds 4 to 9 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...3 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........44-52.
* 24 HR Trend..........5 degrees cooler.
* Max Humidity...........73-85 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 8 mph in the evening
becoming drainage up to 5 mph.
* Ridges/Upr Slopes....Northwest winds up to 8 mph shifting to the
northeast up to 7 mph after midnight.
* CWR....................0 percent.
* CHANCE OF THUNDER...3 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........68-77.
* Min Humidity...........21-34 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds 5 to 11 mph. Local gusts up
to 25 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 5 to 11 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ268-180015-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Mostly cloudy with a slight chance of
showers and thunderstorms in the morning, then partly cloudy with
a chance of showers and a slight chance of thunderstorms in the
afternoon.
* Max Temperature........55-61 lower elevations...except 47-55
higher elevations.
* 24 HR Trend..........11 degrees cooler.
* Min Humidity...........41-56 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...West winds 7 to 13 mph.
* Ridges/Upr Slopes....West winds 7 to 13 mph with local gusts up
to 25 mph.
* CWR....................10 percent.
* CHANCE OF THUNDER...15 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........33-41 lower elevations...except 27-35
higher elevations.
* 24 HR Trend..........9 degrees cooler.
* Max Humidity...........64-79 percent...except 81-93 percent in
the high mountain valleys.
* 24 HR Trend..........7 percent down.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 7 to 13 mph.
* Ridges/Upr Slopes....North winds 7 to 13 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...4 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........60-66 lower elevations...except 52-60
higher elevations.
* Min Humidity...........26-41 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...North winds 7 to 13 mph.
* Ridges/Upr Slopes....North winds 7 to 13 mph.
* CWR....................0 percent.
* CHANCE OF THUNDER...0 percent.
$$
CAZ221-269-180015-
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and Eldorado NF/S West of the
Sierra Crest-
1209 AM PDT Sat May 17 2025
.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
partly cloudy. At higher elevations, a slight chance of showers
in the morning.
* Max Temperature........57-62 lower elevations...except 45-55
higher elevations.
* 24 HR Trend..........12 degrees cooler.
* Min Humidity...........50-65 percent.
* 24 HR Trend..........15 percent up.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Southwest winds 9 to 15 mph.
* Ridges/Upr Slopes....Southwest winds 9 to 15 mph with local gusts
up to 40 mph.
* CWR....................10 percent.
* CHANCE OF THUNDER...5 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature........40-46 lower elevations...except 27-37
higher elevations.
* 24 HR Trend..........7 degrees cooler.
* Max Humidity...........74-89 percent.
* 24 HR Trend..........Little change.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northwest winds up to 8 mph shifting to the
northeast after midnight.
* Ridges/Upr Slopes....West winds 8 to 14 mph with local gusts up
to 25 mph shifting to the north 4 to 10 mph after midnight.
* CWR....................0 percent.
* CHANCE OF THUNDER...5 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature........64-69 lower elevations...except 51-61
higher elevations.
* Min Humidity...........33-48 percent.
* 20-Foot Winds..........
* Valleys/Lwr Slopes...Northeast winds up to 8 mph shifting to the
west 6 to 12 mph in the afternoon.
* Ridges/Upr Slopes....Northwest winds 6 to 12 mph. Local gusts up
to 25 mph in the afternoon.
* CWR....................0 percent.
* CHANCE OF THUNDER...1 percent.
$$
.Extended...
...Shasta County Mountains and Coastal Range
.SUNDAY NIGHT...Clear. Lows 38 to 48. Northwest winds 8 to
18 mph.
.MONDAY...Sunny. Highs 67 to 77. North winds 5 to 15 mph.
.MONDAY NIGHT...Clear. Lows 42 to 52. Northwest winds 8 to
18 mph.
.TUESDAY...Sunny. Highs 71 to 81. Northwest winds up to 13 mph.
.TUESDAY NIGHT...Clear. Lows 45 to 55. Northwest winds 5 to
15 mph.
.WEDNESDAY...Sunny. Highs 74 to 83. Northwest winds up to 13 mph.
.WEDNESDAY NIGHT...Clear. Lows 44 to 54. Northwest winds 5 to
15 mph.
...Northern Sierra and Lassen Park
.SUNDAY NIGHT...Clear. Lows 38 to 48. North winds 5 to 15 mph.
.MONDAY...Sunny. Highs 70 to 78. North winds up to 13 mph.
.MONDAY NIGHT...Clear. Lows 43 to 53. Northeast winds up to
13 mph.
.TUESDAY...Sunny. Highs 72 to 80. West winds up to 10 mph.
.TUESDAY NIGHT...Clear. Lows 46 to 56. Variable less than 5 mph.
.WEDNESDAY...Sunny. Highs 75 to 83. Southwest winds up to 10 mph.
.WEDNESDAY NIGHT...Clear. Lows 46 to 56. Variable less than
5 mph.
...Sierra Nevada Foothills
.SUNDAY NIGHT...Clear. Lows 49 to 54. North winds up to 13 mph.
.MONDAY...Sunny. Highs 78 to 84. Northwest winds up to 13 mph.
.MONDAY NIGHT...Clear. Lows 53 to 58. Northeast winds up to
10 mph.
.TUESDAY...Sunny. Highs 80 to 87. West winds up to 10 mph.
.TUESDAY NIGHT...Clear. Lows 55 to 60. Variable less than 5 mph.
.WEDNESDAY...Sunny. Highs 84 to 89. West winds up to 10 mph.
.WEDNESDAY NIGHT...Clear. Lows 56 to 61. Variable less than
5 mph.
...Central Valley and Delta
.SUNDAY NIGHT...Clear. Lows 54 to 59. Northwest winds 10 to
20 mph.
.MONDAY...Sunny. Highs 89 to 94. Northwest winds 10 to 20 mph.
.MONDAY NIGHT...Clear. Lows 56 to 61. Northwest winds 5 to
15 mph.
.TUESDAY...Sunny. Highs 91 to 96. Northwest winds 5 to 10 mph.
.TUESDAY NIGHT...Clear. Lows 56 to 61. Northwest winds 5 to
10 mph.
.WEDNESDAY...Sunny. Highs 94 to 99. Northwest winds 5 to 10 mph.
.WEDNESDAY NIGHT...Clear. Lows 58 to 63. West winds 5 to 10 mph.
$$