Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
222
FNUS56 KEKA 042010
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
110 PM PDT Fri Sep 4 2026
.DISCUSSION...Chances for light rain showers and very slight
chances for isolated thunderstorms continue in Del Norte,
Siskiyou, interior Humboldt, and northern Trinity County today.
Expect northwest winds and an unstable atmosphere through the
weekend with additional chances for rain showers and interior
thunderstorms Sunday. Cooler temperatures continue through the
weekend. Temperatures return to near-normal early next week.
CAZ401-051315-
Coastal Del Norte-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy. Slight chance of showers
early in the evening. Patchy fog in the
late evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....45-49
* Max Humidity.......
Valleys/lwr slopes...93-100 percent
Ridges/upr slopes....93-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southeast 5
mph after midnight.
* Mixing Height..........800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Patchy
fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-66
Ridges/upr slopes....60-66
* Min Humidity.......
Valleys/lwr slopes...72-84 percent
Ridges/upr slopes....71-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....East winds 5 mph...shifting to the
northwest 5 to 6 mph in the afternoon.
* Mixing Height..........2300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog in the late
evening and early morning. Areas of fog
early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....46-51
* Max Humidity.......
Valleys/lwr slopes...92-100 percent
Ridges/upr slopes....92-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....Northwest winds 5 mph in the
evening...becoming light winds 2 to 4 mph.
* Mixing Height..........800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy. Areas of fog early in the
morning, then patchy fog in the late
morning and early afternoon.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...60-66
Ridges/upr slopes....59-65
* Min Humidity.......
Valleys/lwr slopes...77-89 percent
Ridges/upr slopes....77-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 1 to 3 mph.
Ridges/upr slopes....Variable 1 to 3 mph...becoming west 5 mph
in the afternoon.
* Mixing Height..........2000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ402-051315-
Interior Del Norte Including the Smith River Valley-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy. Slight chance of showers
early in the evening. Patchy fog in the
late evening and early morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...43-47
Ridges/upr slopes....42-47
* Max Humidity.......
Valleys/lwr slopes...88-100 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph...shifting to
the south after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....10 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....57-65
* Min Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
west 5 mph in the afternoon.
* Mixing Height..........4200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming mostly cloudy. Patchy fog
early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...45-49
Ridges/upr slopes....45-49
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 mph in the evening...becoming
light winds 2 to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the east 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning. Slight
chance of showers in the late morning and
afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...62-70
Ridges/upr slopes....55-63
* Min Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 1 to 3 mph...becoming west 5
mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 mph
in the afternoon.
* Mixing Height..........3100 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ403-051315-
Northeastern Interior Humboldt and Southwestern Siskiyou
Including Orleans-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-49
Ridges/upr slopes....41-46
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...32-42 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-52
Ridges/upr slopes....44-49
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....69-84 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
east 5 mph after midnight.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Chance of rain in the late morning and
afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....56-64
* Min Humidity.......
Valleys/lwr slopes...40-50 percent
Ridges/upr slopes....52-62 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ404-051315-
Northern Coastal Humboldt-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-52
Ridges/upr slopes....around 49
* Max Humidity.......
Valleys/lwr slopes...93-100 percent
Ridges/upr slopes....95 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...62-66
Ridges/upr slopes....around 60
* Min Humidity.......
Valleys/lwr slopes...70-85 percent
Ridges/upr slopes....81 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
northwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Variable 1 to 3 mph...becoming north 5 mph
in the afternoon.
* Mixing Height..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-53
Ridges/upr slopes....around 50
* Max Humidity.......
Valleys/lwr slopes...92-100 percent
Ridges/upr slopes....95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....North winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
* Mixing Height..........800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-65
Ridges/upr slopes....around 59
* Min Humidity.......
Valleys/lwr slopes...74-88 percent
Ridges/upr slopes....85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ405-051315-
Northwestern Interior Humboldt Including the Bald Hills-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...44-48
Ridges/upr slopes....45-48
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....76-91 percent
* 20-Foot Winds...
Valleys/lwr slopes...Downslope/downvalley 1 to 3 mph.
Ridges/upr slopes....West winds 5 mph...shifting to the east 5
to 6 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the northwest in the afternoon.
* Mixing Height..........3400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...45-51
Ridges/upr slopes....45-51
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy fog in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...62-70
Ridges/upr slopes....57-65
* Min Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
west 5 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 mph
in the afternoon.
* Mixing Height..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ406-051315-
Eastern Interior Humboldt Including Willow Creek and Hoopa-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers
early in the evening.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-49
Ridges/upr slopes....41-46
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....64-79 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
north after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....57-65
* Min Humidity.......
Valleys/lwr slopes...43-53 percent
Ridges/upr slopes....52-62 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
northwest 5 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
west 5 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....44-47
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....62-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....54-62
* Min Humidity.......
Valleys/lwr slopes...49-59 percent
Ridges/upr slopes....56-66 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........3900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ407-051315-
Southwestern Humboldt Including the King Range and the Eel River
Valley-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-50
Ridges/upr slopes....45-50
* Max Humidity.......
Valleys/lwr slopes...87-100 percent
Ridges/upr slopes....80-95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...68-76
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...55-65 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming north 5 to
6 mph in the afternoon.
* Mixing Height..........4200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-51
Ridges/upr slopes....45-52
* Max Humidity.......
Valleys/lwr slopes...86-100 percent
Ridges/upr slopes....80-95 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....58-64
* Min Humidity.......
Valleys/lwr slopes...60-70 percent
Ridges/upr slopes....74-89 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....North winds 5 to 7 mph.
* Mixing Height..........3200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ408-051315-
Southeastern Interior Humboldt Including Kneeland and Alderpoint-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy fog until early
morning. Areas of fog late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...45-50
Ridges/upr slopes....40-48
* Max Humidity.......
Valleys/lwr slopes...90-100 percent
Ridges/upr slopes....77-92 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....59-65
* Min Humidity.......
Valleys/lwr slopes...66-76 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
west 5 to 6 mph in the afternoon.
* Mixing Height..........4900 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-51
Ridges/upr slopes....42-49
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....56-62
* Min Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........3500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ409-051315-
Northwestern Trinity Including Salyer and Big Bar-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...44-48
Ridges/upr slopes....39-45
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....68-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...74-82
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...33-41 percent
Ridges/upr slopes....36-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the south in the afternoon.
* Mixing Height..........7200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear then becoming mostly cloudy
then becoming partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....42-48
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....63-74 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
northeast 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy. Slight chance of showers in
the late morning and afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....54-62
* Min Humidity.......
Valleys/lwr slopes...40-50 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........5600 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ410-051315-
Northeastern Trinity Including Trinity Lake-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...41-47
Ridges/upr slopes....36-44
* Max Humidity.......
Valleys/lwr slopes...79-94 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 mph in the
evening...becoming downslope/downvalley 1
to 3 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....57-65
* Min Humidity.......
Valleys/lwr slopes...29-37 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
southeast 5 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 7 mph.
* Mixing Height..........7400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-51
Ridges/upr slopes....40-48
* Max Humidity.......
Valleys/lwr slopes...67-80 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Downslope/downvalley 1 to 3 mph.
Ridges/upr slopes....South winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Showers likely through the day. Slight
chance of thunderstorms in the late
morning and afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...65-73
Ridges/upr slopes....51-59
* Min Humidity.......
Valleys/lwr slopes...42-52 percent
Ridges/upr slopes....58-68 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
mph in the afternoon.
* Mixing Height..........6600 ft AGL.
* Chc of Wetting Rain....30 percent.
$$
CAZ411-051315-
Eastern Trinity Including Weaverville and Hayfork-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...40-46
Ridges/upr slopes....42-46
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-79
Ridges/upr slopes....62-70
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....36-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southeast 5
mph in the afternoon.
* Mixing Height..........7800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...43-50
Ridges/upr slopes....45-48
* Max Humidity.......
Valleys/lwr slopes...71-86 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Downslope/downvalley 1 to 3 mph.
Ridges/upr slopes....West winds 5 mph in the evening...becoming
downslope/downvalley 2 to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy. Slight chance of showers in
the late morning and afternoon.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-75
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...33-43 percent
Ridges/upr slopes....44-54 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........7000 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ412-051315-
Southern Trinity Including Ruth Lake and the Yolla Bollys-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy fog in the late
evening and early morning. Areas of fog
late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...39-46
Ridges/upr slopes....38-44
* Max Humidity.......
Valleys/lwr slopes...88-100 percent
Ridges/upr slopes....80-95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....60-68
* Min Humidity.......
Valleys/lwr slopes...38-48 percent
Ridges/upr slopes....41-51 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 6 mph in the afternoon.
* Mixing Height..........6300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog after midnight.
Areas of fog early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...43-48
Ridges/upr slopes....41-46
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....79-94 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny then becoming partly cloudy then
becoming sunny. Areas of fog early in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....57-65
* Min Humidity.......
Valleys/lwr slopes...45-55 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........5100 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ413-051315-
Coastal Mendocino-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the evening. Areas of fog
after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-51
Ridges/upr slopes....43-51
* Max Humidity.......
Valleys/lwr slopes...92-100 percent
Ridges/upr slopes....87-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....North winds 5 to 7 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy fog in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-69
Ridges/upr slopes....61-67
* Min Humidity.......
Valleys/lwr slopes...66-81 percent
Ridges/upr slopes....62-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....North winds 5 mph...shifting to the west 5
to 6 mph in the afternoon.
* Mixing Height..........1900 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy then becoming
mostly cloudy. Patchy fog in the evening.
Areas of fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....44-51
* Max Humidity.......
Valleys/lwr slopes...91-100 percent
Ridges/upr slopes....86-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....North winds 5 to 7 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Areas of fog early in
the morning. Patchy fog late in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....60-66
* Min Humidity.......
Valleys/lwr slopes...70-85 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming northwest 5
to 7 mph in the afternoon.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ414-051315-
Northern Interior Mendocino Including Leggett and Willits-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...40-48
Ridges/upr slopes....42-48
* Max Humidity.......
Valleys/lwr slopes...87-100 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the north 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....63-70
* Min Humidity.......
Valleys/lwr slopes...45-55 percent
Ridges/upr slopes....53-63 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....North winds 5 mph...shifting to the west 5
to 6 mph in the afternoon.
* Mixing Height..........5100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...41-49
Ridges/upr slopes....43-49
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....74-89 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny then becoming partly cloudy then
becoming sunny. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....60-67
* Min Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....57-67 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........3600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ415-051315-
Northeastern Interior Mendocino Including Covelo-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Mostly clear. Areas of fog late in the
night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...39-47
Ridges/upr slopes....42-47
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Areas of fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....61-69
* Min Humidity.......
Valleys/lwr slopes...33-40 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 6 mph in the afternoon.
* Mixing Height..........6700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...42-49
Ridges/upr slopes....44-49
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny. Areas of fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....59-67
* Min Humidity.......
Valleys/lwr slopes...36-43 percent
Ridges/upr slopes....42-52 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........5400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ416-051315-
Southeastern Interior Mendocino Including Ukiah and Potter Valley-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Clear. Areas of fog late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...43-51
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....67-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Areas of fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....66-73
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....North winds 5 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
* Mixing Height..........6600 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Areas of fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...44-52
Ridges/upr slopes....48-53
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...68-76
Ridges/upr slopes....63-70
* Min Humidity.......
Valleys/lwr slopes...41-51 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
west 5 to 9 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........4500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ417-051315-
Southwestern Interior Mendocino Including Boonville-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-52
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...68-76
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...51-61 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........4200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-52
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...80-95 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy fog in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...65-73
Ridges/upr slopes....63-70
* Min Humidity.......
Valleys/lwr slopes...58-68 percent
Ridges/upr slopes....61-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming northwest 5
to 8 mph in the afternoon.
* Mixing Height..........2500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ418-051315-
Northern Lake Including Gravelly Valley-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...40-48
Ridges/upr slopes....43-51
* Max Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....64-79 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
north 5 to 6 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...76-81
Ridges/upr slopes....62-70
* Min Humidity.......
Valleys/lwr slopes...25-33 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 mph in the afternoon.
Ridges/upr slopes....East winds 5 mph...shifting to the south 5
to 6 mph in the afternoon.
* Mixing Height..........6500 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...42-50
Ridges/upr slopes....45-52
* Max Humidity.......
Valleys/lwr slopes...70-85 percent
Ridges/upr slopes....57-72 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
northwest 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...73-79
Ridges/upr slopes....60-68
* Min Humidity.......
Valleys/lwr slopes...29-37 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 mph...shifting to the
southwest 5 to 8 mph in the afternoon.
* Mixing Height..........5600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ419-051315-
Eastern Lake Including Clearlake and Middletown-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...44-52
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....72-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...76-80
Ridges/upr slopes....70-74
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....33-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southeast 5 to 6 mph in the afternoon.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
southeast 5 to 7 mph in the afternoon.
* Mixing Height..........7300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-54
Ridges/upr slopes....48-54
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....65-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...75-79
Ridges/upr slopes....69-74
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....32-40 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Southwest winds 5 to 8 mph.
* Mixing Height..........6100 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ420-051315-
Southern Lake Including Cobb and Konocti-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...45-52
Ridges/upr slopes....50-53
* Max Humidity.......
Valleys/lwr slopes...66-81 percent
Ridges/upr slopes....62-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...75-78
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 6 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
south 5 to 6 mph in the afternoon.
* Mixing Height..........6000 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-53
Ridges/upr slopes....51-54
* Max Humidity.......
Valleys/lwr slopes...61-76 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...73-77
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 9 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming west 5 to 8
mph in the afternoon.
* Mixing Height..........4900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ421-051315-
Western Lake Including Lakeport-
110 PM PDT Fri Sep 4 2026
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...43-51
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....67-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...73-78
Ridges/upr slopes....68-72
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....32-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....North winds 5 mph...shifting to the south
in the afternoon.
* Mixing Height..........7000 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...45-52
Ridges/upr slopes....49-53
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....60-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...70-76
Ridges/upr slopes....65-69
* Min Humidity.......
Valleys/lwr slopes...39-49 percent
Ridges/upr slopes....37-44 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........5500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.LABOR DAY...Partly cloudy. Patchy fog. Lows near 50. Highs 64 to
70. North winds 5 mph.
.TUESDAY...Partly cloudy. Patchy fog after midnight. Lows in the
lower to mid 50s. Highs 65 to 71. Winds generally less than
5 mph.
.WEDNESDAY...Mostly cloudy with slight chance of rain. Lows in
the lower to mid 50s. Highs 66 to 72. Winds generally less than
5 mph.
...Northwest California Interior...
.LABOR DAY...Clear. Lows 45 to 53. Highs 75 to 84. North winds
5 mph.
.TUESDAY...Partly cloudy. Lows 52 to 60. Highs 78 to 87. Winds
generally less than 5 mph.
.WEDNESDAY...Partly cloudy with slight chance of rain. Lows 53 to
61. Highs 76 to 86. Winds generally less than 5 mph.
.6 to 10 DAY OUTLOOK...Thursday September 10 THROUGH Monday September 14, 2026...
FOR NW CALIF...BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
$$
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