Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

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

Clear

77°F

25°C

Humidity 53%
Wind Speed S 6 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 59°F (15°C)
Visibility 8.00 mi
Heat Index79°F (26°C)
Last update 18 Sep 12:15 PM PDT
Extended Forecast for

Petaluma CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. Light west wind increasing to 5 to 10 mph. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 52. West wind 5 to 8 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 84 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 53. West wind 5 to 7 mph becoming calm  in the evening.

    Low: 53 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 9am.  Otherwise, partly sunny, with a high near 78. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 78 °F

    Areas Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 53.

    Low: 53 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 80.

    High: 80 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 10pm.  Otherwise, partly cloudy, with a low around 53.

    Low: 53 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 9am.  Otherwise, mostly sunny, with a high near 82.

    High: 82 °F

    Areas Fog
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Light west wind increasing to 5 to 10 mph. Winds could gust as high as 20 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 52. West wind 5 to 8 mph becoming calm in the evening.
Saturday
Areas of fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west 5 to 9 mph in the afternoon.
Saturday Night
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 53. West wind 5 to 7 mph becoming calm in the evening.
Sunday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 78. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 53.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 80.
Monday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 53.
Tuesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 82.
Tuesday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 54.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
11:27 am PDT Sep 18, 2026
12pm PDT Sep 18, 2026-6pm PDT Sep 24, 2026
 
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Additional Resources

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