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

GREEN SPRING (GNSC1)

Lat: 37.83418°NLon: 120.50311°WElev: 1108.0ft.

NA

44°F

7°C

Humidity 93%
Wind Speed E 4 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 21 Jan 06:03 AM PST
Extended Forecast for

12 Miles SW Jamestown CA

Dense Fog Advisory until January 21, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until January 21, 12:00pm

    NOW until 12:00pm Wed

    Dense Fog Advisory

  • Today

    High: 57 °F

    Cloudy

  • Tonight

    Tonight: Widespread dense fog, mainly after 1am.  Otherwise, cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Dense Fog

  • Thursday

    Thursday: Mostly cloudy, with a high near 57. Calm wind becoming west around 6 mph in the afternoon.

    High: 57 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 54. Calm wind becoming west around 6 mph in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Friday Night

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

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Today
Cloudy, with a high near 57. Light and variable wind.
Tonight
Widespread dense fog, mainly after 1am. Otherwise, cloudy, with a low around 47. Calm wind.
Thursday
Mostly cloudy, with a high near 57. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 43. Calm wind.
Friday
Mostly sunny, with a high near 54. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SW Jamestown CA
 37.84°N 120.56°W (Elev. 1178 ft)
1:21 am PST Jan 21, 2026
6am 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