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

22 Miles NNE Lakeport CA

  • Tonight

    Tonight: Widespread haze before midnight, then widespread haze after 2am. Mostly clear, with a low around 48. West northwest wind around 6 mph.

    Low: 48 °F

    Haze

  • Tuesday

    Tuesday: Widespread haze before 11am. Sunny, with a high near 59. West wind around 6 mph becoming calm  in the morning.

    High: 59 °F

    Haze then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 51. Northwest wind around 7 mph.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 59. North northwest wind around 6 mph becoming calm  in the afternoon.

    High: 59 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51. Northwest wind around 6 mph.

    Low: 51 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze before midnight, then widespread haze after 2am. Mostly clear, with a low around 48. West northwest wind around 6 mph.
Tuesday
Widespread haze before 11am. Sunny, with a high near 59. West wind around 6 mph becoming calm in the morning.
Tuesday Night
Clear, with a low around 51. Northwest wind around 7 mph.
Wednesday
Sunny, with a high near 59. North northwest wind around 6 mph becoming calm in the afternoon.
Wednesday Night
Clear, with a low around 51. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 59.
Thursday Night
Clear, with a low around 48.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 44.
Monday
A chance of showers. Partly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNE Lakeport CA
 39.31°N 122.7°W (Elev. 4029 ft)
1:20 pm PST Dec 8, 2025
11pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database