Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

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

Clear

66°F

19°C

Humidity 72%
Wind Speed N 12 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Aug 07:35 PM PDT
Extended Forecast for

Petaluma CA

  • Tonight

    Tonight: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 54. West wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 82 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56. West wind 3 to 8 mph. Winds could gust as high as 18 mph.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. West wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 21 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 9am.  Otherwise, mostly sunny, with a high near 83.

    High: 83 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 53.

    Low: 53 °F

    Patchy Fog

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 54. West wind around 5 mph becoming calm in the evening.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 56. West wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 53. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 53.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 83.
Sunday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 53.
Monday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 78.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 53.
Tuesday
Patchy fog. Otherwise, mostly cloudy, with a high near 78.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 52.
Wednesday
Areas of fog. Otherwise, partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
1:26 pm PDT Aug 19, 2026
8pm PDT Aug 19, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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