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

KF6YUA Sebastopol (AR323)

Lat: 38.38033°NLon: 122.82367°WElev: 235.3ft.

NA

84°F

29°C

Humidity 50%
Wind Speed S 1 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 63°F (17°C)
Visibility NA
Heat Index85°F (29°C)
Last update 27 Aug 11:56 AM PDT
Extended Forecast for

Cotati CA

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 87. Southwest wind 5 to 10 mph.

    High: 87 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. South southwest wind around 6 mph becoming calm  after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 11am.  Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 78 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Areas of fog after 5am.  Otherwise, increasing clouds, with a low around 51. South southeast wind 3 to 7 mph.

    Low: 51 °F

    Partly Cloudy
    then Areas
    Fog

  • Saturday

    Saturday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 78. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 78 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 51.

    Low: 51 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 10am.  Otherwise, sunny, with a high near 78.

    High: 78 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 51.

    Low: 51 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Areas Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 87. Southwest wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 57. South southwest wind around 6 mph becoming calm after midnight.
Friday
A 20 percent chance of showers before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 78. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Friday Night
Areas of fog after 5am. Otherwise, increasing clouds, with a low around 51. South southeast wind 3 to 7 mph.
Saturday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 51.
Sunday
Areas of fog before 10am. Otherwise, sunny, with a high near 78.
Sunday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 51.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 74.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 50.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Cotati CA
 38.34°N 122.7°W (Elev. 98 ft)
11:46 am PDT Aug 27, 2026
12pm PDT Aug 27, 2026-6pm PDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database