Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

LYONS VALLEY (COWC1)

Lat: 39.12583°NLon: 123.07333°WElev: 3355.0ft.

NA

66°F

19°C

Humidity 19%
Wind Speed NNW 12 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 10 Dec 12:01 AM PST
Extended Forecast for

Lakeport CA

  • Overnight

    Overnight: Increasing clouds, with a low around 40. Calm wind.

    Low: 40 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 70. Calm wind.

    High: 70 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Calm wind.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 45. Light northeast wind.

    Low: 45 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 70. East northeast wind around 5 mph becoming calm  in the afternoon.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Increasing clouds, with a low around 40. Calm wind.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 70. Calm wind.
Wednesday Night
Mostly clear, with a low around 36. Calm wind.
Thursday
Sunny, with a high near 70. Calm wind.
Thursday Night
Clear, with a low around 45. Light northeast wind.
Friday
Sunny, with a high near 70. East northeast wind around 5 mph becoming calm in the afternoon.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 63.
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 59.
Monday Night
Showers likely. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers. Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Lakeport CA
 39.05°N 122.92°W (Elev. 1388 ft)
10:31 pm PST Dec 9, 2025
12am PST Dec 10, 2025-6pm PST Dec 16, 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