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

STONYFORD (SYWC1)

Lat: 39.35523°NLon: 122.65831°WElev: 1540.0ft.

NA

39°F

4°C

Humidity 87%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 20 Jan 09:26 PM PST
Extended Forecast for

20 Miles N Clearlake CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Northwest wind around 6 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 54. North wind around 6 mph.

    High: 54 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 47. West northwest wind 3 to 6 mph.

    Low: 47 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind around 6 mph becoming southeast in the afternoon.

    High: 56 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. North northwest wind around 6 mph.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

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

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 47. Northwest wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 54. North wind around 6 mph.
Wednesday Night
Cloudy, with a low around 47. West northwest wind 3 to 6 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind around 6 mph becoming southeast in the afternoon.
Thursday Night
Mostly clear, with a low around 43. North northwest wind around 6 mph.
Friday
Sunny, with a high near 53.
Friday Night
Clear, with a low around 41.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles N Clearlake CA
 39.24°N 122.56°W (Elev. 3199 ft)
1:26 pm PST Jan 20, 2026
10pm PST Jan 20, 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