Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, 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

57°F

14°C

Humidity 93%
Wind Speed NNW 4 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 12:55 AM PDT
Extended Forecast for

Petaluma CA

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a steady temperature around 57. Calm wind.

    Low: 57 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 9am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 86 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 55. West wind around 5 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 82. Calm wind becoming west 5 to 8 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 5 to 9 mph becoming light west southwest  after midnight.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 57. Calm wind.
Wednesday
Areas of fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 55. 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 8 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 56. West wind 5 to 9 mph becoming light west southwest after midnight.
Friday
Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Sunny, with a high near 82.
Saturday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 82.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Monday
Areas of fog. Otherwise, partly sunny, with a high near 79.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
12:47 am PDT Aug 19, 2026
1am PDT Aug 19, 2026-6pm PDT Aug 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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