Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

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

Clear

86°F

30°C

Humidity 33%
Wind Speed SW 16 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 27 Aug 04:15 PM PDT
Extended Forecast for

Petaluma CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. West wind 5 to 10 mph becoming light southwest  after midnight.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 11am.  Mostly cloudy, then gradually becoming sunny, with a high near 80. Light southwest wind becoming west 8 to 13 mph in the morning.

    High: 80 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am.  Otherwise, increasing clouds, with a low around 52. West wind 6 to 11 mph becoming light  in the evening.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light west wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 52. West southwest wind 6 to 11 mph becoming light west  after midnight. Winds could gust as high as 21 mph.

    Low: 52 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after midnight.  Otherwise, mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. West wind 5 to 10 mph becoming light southwest after midnight.
Friday
A 20 percent chance of showers before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 80. Light southwest wind becoming west 8 to 13 mph in the morning.
Friday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 52. West wind 6 to 11 mph becoming light in the evening.
Saturday
Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 79. Light west wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. West southwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 21 mph.
Sunday
Patchy fog before 9am. Otherwise, sunny, with a high near 80.
Sunday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 51.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 51.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 77.
Wednesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Thursday
A slight chance of showers. Patchy fog. Otherwise, mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
1:42 pm PDT Aug 27, 2026
4pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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