Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

SAC NWR (NWRC1)

Lat: 39.41722°NLon: 122.1825°WElev: 120.0ft.

NA

45°F

7°C

Humidity 100%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 20 Jan 04:29 AM PST
Extended Forecast for

8 Miles NE Williams CA

Dense Fog Advisory January 20, 05:43am until January 20, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 20, 05:43am until January 20, 12:00pm

    NOW until 12:00pm Tue

    Dense Fog Advisory

  • Today

    High: 56 °F

    Dense Fog
    then Haze

  • Tonight

    Tonight: Widespread dense fog.  Otherwise, cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Dense Fog

  • Wednesday

    Wednesday: Cloudy, with a high near 56. Calm wind.

    High: 56 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 61. Light north northwest wind.

    High: 61 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Today
Widespread haze before 3pm. Widespread dense fog before 10am. Otherwise, mostly cloudy, with a high near 56. Calm wind becoming north northwest around 5 mph.
Tonight
Widespread dense fog. Otherwise, cloudy, with a low around 45. Calm wind.
Wednesday
Cloudy, with a high near 56. Calm wind.
Wednesday Night
Cloudy, with a low around 46. Calm wind.
Thursday
Partly sunny, with a high near 61. Light north northwest wind.
Thursday Night
Mostly clear, with a low around 41.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NE Williams CA
 39.25°N 122.07°W (Elev. 49 ft)
2:26 am PST Jan 20, 2026
5am PST Jan 20, 2026-6pm PST Jan 26, 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