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

Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. this week. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

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

Clear

61°F

16°C

Humidity 100%
Wind Speed N 8 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 03 Sep 12:15 AM PDT
Extended Forecast for

Petaluma CA

  • Overnight

    Overnight: Patchy drizzle. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 54. Light west wind.

    Low: 54 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy drizzle before 11am. Patchy fog before 10am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 84 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy drizzle and fog after 11pm. Increasing clouds, with a low around 54. West wind 3 to 7 mph.

    Low: 54 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Thursday

    Thursday: Patchy drizzle before 11am. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 79 °F

    Patchy
    Drizzle and
    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy drizzle and fog after 11pm. Mostly cloudy, with a low around 55. West wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Friday

    Friday: Patchy drizzle before 11am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76.

    High: 76 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 55.

    Low: 55 °F

    Patchy Fog

Detailed Forecast

Overnight
Patchy drizzle. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 54. Light west wind.
Wednesday
Patchy drizzle before 11am. Patchy fog before 10am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Light west wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Patchy drizzle and fog after 11pm. Increasing clouds, with a low around 54. West wind 3 to 7 mph.
Thursday
Patchy drizzle before 11am. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Patchy drizzle and fog after 11pm. Mostly cloudy, with a low around 55. West wind 5 to 11 mph, with gusts as high as 18 mph.
Friday
Patchy drizzle before 11am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76.
Friday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 54.
Saturday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 77.
Saturday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 55.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 78.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 54.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 76.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 54.
Tuesday
Areas of fog. Otherwise, mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.26°N 122.65°W (Elev. 89 ft)
Last Update:
1:26 pm PDT Sep 2, 2025
Forecast Valid:
12am PDT Sep 3, 2025-6pm PDT Sep 9, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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