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

44°F

7°C

Humidity 99%
Wind Speed S 2 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 44°F (7°C)
Visibility NA
Last update 21 Jan 04:09 AM PST
Extended Forecast for

Graton CA

  • Today

    Today: Widespread dense fog, mainly before 9am.  Otherwise, cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Dense Fog
    then Cloudy

  • Tonight

    Tonight: Patchy fog after 10pm.  Otherwise, cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Patchy Fog

  • Thursday

    Thursday: Widespread dense fog, mainly before 7am.  Otherwise, partly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Dense Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Friday

    Friday: Widespread dense fog, mainly before 9am.  Otherwise, partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Dense Fog

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 59. Calm wind.
Tonight
Patchy fog after 10pm. Otherwise, cloudy, with a low around 46. Calm wind.
Thursday
Widespread dense fog, mainly before 7am. Otherwise, partly sunny, with a high near 61. Calm wind.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Friday
Widespread dense fog, mainly before 9am. Otherwise, partly sunny, with a high near 58. Calm wind.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly cloudy, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 59.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Graton CA
 38.45°N 122.88°W (Elev. 95 ft)
2:13 am PST Jan 21, 2026
4am 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