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

STONYFORD (SYWC1)

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

NA

34°F

1°C

Humidity 94%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 08 Dec 11:26 PM PST
Extended Forecast for

18 Miles WNW Williams CA

  • Overnight

    Overnight: Widespread haze. Mostly clear, with a steady temperature around 44. Calm wind.

    Low: 44 °F

    Haze

  • Tuesday

    Tuesday: Widespread haze before 11am. Widespread dense fog, mainly before 7am.  Otherwise, sunny, with a high near 58. Light and variable wind becoming north around 6 mph in the afternoon.

    High: 58 °F

    Dense Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. West northwest wind 3 to 5 mph.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64. Northwest wind around 6 mph becoming north northeast in the afternoon.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. West northwest wind 3 to 5 mph.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

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

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Widespread haze. Mostly clear, with a steady temperature around 44. Calm wind.
Tuesday
Widespread haze before 11am. Widespread dense fog, mainly before 7am. Otherwise, sunny, with a high near 58. Light and variable wind becoming north around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 45. West northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 64. Northwest wind around 6 mph becoming north northeast in the afternoon.
Wednesday Night
Clear, with a low around 44. West northwest wind 3 to 5 mph.
Thursday
Sunny, with a high near 66.
Thursday Night
Clear, with a low around 43.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Monday
A chance of showers. Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles WNW Williams CA
 39.26°N 122.45°W (Elev. 1634 ft)
1:20 pm PST Dec 8, 2025
12am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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Hourly Weather Forecast

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