Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

SAC NWR (NWRC1)

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

NA

43°F

6°C

Humidity 100%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 09 Dec 01:29 AM PST
Extended Forecast for

8 Miles ENE Williams CA

  • Overnight

    Overnight: Widespread haze. Patchy dense fog.  Otherwise, mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Widespread haze before noon. Widespread dense fog, mainly before 7am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 46. Light north northwest wind.

    High: 46 °F

    Dense Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 50. Light north wind.

    High: 50 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Friday Night

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

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Widespread haze. Patchy dense fog. Otherwise, mostly cloudy, with a low around 41. Calm wind.
Tuesday
Widespread haze before noon. Widespread dense fog, mainly before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 46. Light north northwest wind.
Tuesday Night
Mostly cloudy, with a low around 41. Calm wind.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 50. Light north wind.
Wednesday Night
Partly cloudy, with a low around 42. Calm wind.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 54.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 43.
Monday
A chance of showers. Mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ENE Williams CA
 39.22°N 122°W (Elev. 59 ft)
1:20 am PST Dec 9, 2025
2am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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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