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Simi, California Weather Forecast
Simi, California Weather
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Weather Forecast for Simi, California : Sonoma County
Issued: 2:38 pm PDT Nov 1, 2025 Latitude: 38.6399099 Longitude: -122.8744391 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on This Afternoon Mostly Clear on Tonight Sunny on Sunday Morning Fog on Monday 30% chance of rain on Tuesday 70% chance of thunderstorms on Wednesday Fog on Thursday Patchy Fog on Friday
High: 80°F Low: 53°F High: 79°F High: 71°F High: 66°F High: 64°F High: 67°F High: 70°F
Low: 48°F Low: 52°F Low: 54°F Low: 50°F Low: 50°F  
Sunny Mostly Clear Sunny Morning Fog Rain Thunderstorms Fog Patchy Fog
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Current Conditions at
SANTA ROSA - (KSTS)
73°
Clear
Smoke
as of 1:53 PM PDST
Rel. Humidity: 46%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
UKIAH - (KUKI)
73°
Clear
as of 1:56 PM PDST
Rel. Humidity: 46%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
6 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
NAPA - (KAPC)
70°
Clear
as of 1:54 PM PDST
Rel. Humidity: 60%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
6 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
VACAVILLE - (KVCB)
75°
Clear
as of 1:53 PM PDST
Rel. Humidity: 47%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
6 MPH
050° Northeast
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 80. South southwest wind 6 to 14 mph becoming northwest.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 53. West northwest wind around 15 mph, with gusts as high as 20 mph.

Sunny on Sunday Sunday... Sunny, with a high near 79. Northwest wind 5 to 9 mph becoming calm.

Morning Fog on Sunday Night Sunday Night... Areas of fog after 5am. Otherwise, mostly clear, with a low around 48. Southeast wind 5 to 9 mph becoming calm after midnight.

Morning Fog on Monday Monday... Areas of fog before 8am. Otherwise, mostly sunny, with a high near 71. Calm wind becoming southwest around 5 mph in the afternoon.

20% chance of rain Monday Night Monday Night... A 20 percent chance of rain after 11pm. Areas of fog after 5am. Otherwise, mostly cloudy, with a low around 52. New precipitation amounts of less than a tenth of an inch possible.

30% chance of rain Tuesday Tuesday... A 30 percent chance of rain. Areas of fog before 8am. Otherwise, cloudy, with a high near 66.

70% chance of rain Tuesday Night Tuesday Night... Rain likely, mainly after 11pm. Cloudy, with a low around 54.

70% chance of thunderstorms Wednesday Wednesday... Showers and possibly a thunderstorm before 11am, then rain likely after 11am. Cloudy, with a high near 64.

20% chance of rain Wednesday Night Wednesday Night... A chance of rain before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 50.

Fog on Thursday Thursday... Areas of fog. Otherwise, partly sunny, with a high near 67.

20% chance of rain Thursday Night Thursday Night... A chance of rain. Mostly cloudy, with a low around 50.

Patchy Fog on Friday Friday... Patchy fog. Otherwise, partly sunny, with a high near 70.

Current Radar Image


Sun Almanac for Simi, California
Sunrise: 07:39 AM
Sunset: 6:11 PM
Civil Sunrise:07:11 AM
Civil Sunset: 6:39 PM
Nautical Sunrise: 06:40 AM
Nautical Sunset: 7:10 PM
Astro Sunrise: 06:09 AM
Astro Sunset: 7:41 PM
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