Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

KF6YUA Sebastopol (AR323)

Lat: 38.3803°NLon: 122.8242°WElev: 230.0ft.

NA

45°F

7°C

Humidity 99%
Wind Speed S 2 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Jan 12:53 AM PST
Extended Forecast for

2 Miles SW Cotati CA

  • Overnight

    Overnight: Patchy fog.  Otherwise, cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Wednesday

    Wednesday: Widespread dense fog, mainly before 8am.  Otherwise, cloudy, with a high near 58. Light and variable wind.

    High: 58 °F

    Dense Fog
    then Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after midnight.  Otherwise, cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Cloudy then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am.  Otherwise, mostly cloudy, with a high near 59. Calm wind becoming west around 5 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, cloudy, with a low around 44. Calm wind.
Wednesday
Widespread dense fog, mainly before 8am. Otherwise, cloudy, with a high near 58. Light and variable wind.
Wednesday Night
Patchy fog after midnight. Otherwise, cloudy, with a low around 45. Calm wind.
Thursday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 45. Calm wind.
Friday
Partly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly cloudy, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Cotati CA
 38.31°N 122.72°W (Elev. 325 ft)
12:26 am PST Jan 21, 2026
1am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database