Petaluma, California Weather
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Weather Forecast for Petaluma, California : Sonoma County
Issued: 1:03 am PDT Sep 16, 2025 Latitude: 38.232417 Longitude: -122.6366524 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight Sunny on Tuesday Sunny on Wednesday Partly Sunny on Thursday 10% chance of rain on Friday Morning Fog on Saturday Patchy Fog on Sunday Sunny on Monday
Low: 55°F High: 90°F High: 91°F High: 80°F High: 76°F High: 79°F High: 84°F High: 88°F
Low: 54°F Low: 56°F Low: 57°F Low: 57°F Low: 56°F Low: 57°F  
Mostly Clear Sunny Sunny Partly Sunny Rain Morning Fog Patchy Fog Sunny
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Current Conditions at
NAPA - (KAPC)
63°
Clear
as of 12:54 AM PDST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SANTA ROSA - (KSTS)
61°
Clear
as of 12:53 AM PDST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CONCORD - (KCCR)
70°
Clear
as of 12:53 AM PDST
Rel. Humidity: 56%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
5 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
VACAVILLE - (KVCB)
64°
Clear
as of 12:53 AM PDST
Rel. Humidity: 52%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 55. Calm wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 90. Calm wind becoming west 5 to 8 mph in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 54. Calm wind.
Sunny on Wednesday Wednesday... Sunny, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 56. West wind 5 to 9 mph becoming calm in the evening.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 80.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of rain after 11pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 57.
10% chance of rain Friday Friday... A slight chance of rain. Patchy fog before 9am. Otherwise, partly sunny, with a high near 76.
Morning Fog on Friday Night Friday Night... Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 57.
Morning Fog on Saturday Saturday... Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79.
Patchy Fog on Saturday Night Saturday Night... Patchy fog. Otherwise, mostly clear, with a low around 56.
Patchy Fog on Sunday Sunday... Patchy fog. Otherwise, sunny, with a high near 84.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 57.
Sunny on Monday Monday... Sunny, with a high near 88.
Current Radar Image


Sun Almanac for Petaluma, California
Sunrise: 06:54 AM
Sunset: 7:17 PM
Civil Sunrise:06:27 AM
Civil Sunset: 7:43 PM
Nautical Sunrise: 05:56 AM
Nautical Sunset: 8:14 PM
Astro Sunrise: 05:25 AM
Astro Sunset: 8:46 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.