National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

Lat: 38.14178°NLon: 122.55463°WElev: 3.0ft.

Mist

50°F

10°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 48°F (9°C)
Visibility 4.00 mi
Last update 17 Nov 11:15 PM PST
Extended Forecast for

Petaluma CA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 44. Light east northeast wind becoming east 5 to 10 mph after midnight.

    Low: 44 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, sunny, with a high near 62. West wind 5 to 11 mph.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, increasing clouds, with a low around 46. Southwest wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of rain after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 61. Light and variable wind.

    High: 61 °F

    Patchy Fog
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 48. Light south southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 44. Light east northeast wind becoming east 5 to 10 mph after midnight.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 62. West wind 5 to 11 mph.
Tuesday Night
Patchy fog. Otherwise, increasing clouds, with a low around 46. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of rain after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 61. Light and variable wind.
Wednesday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 48. Light south southeast wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 43.
Friday
Sunny, with a high near 64.
Friday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 42.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 66.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Sunday
Areas of fog. Otherwise, mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
Last Update:
7:53 pm PST Nov 17, 2025
Forecast Valid:
11pm PST Nov 17, 2025-6pm PST Nov 24, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation