Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

LYONS VALLEY (COWC1)

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

NA

45°F

7°C

Humidity 83%
Wind Speed SE 3 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 27 Dec 12:01 PM PST
Extended Forecast for

Lakeport CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 51. Calm wind.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 55. Light east wind.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Calm wind becoming northeast around 5 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60. Light east northeast wind.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. Light northeast wind.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 51. Calm wind.
Tonight
Partly cloudy, with a low around 33. Calm wind.
Sunday
Sunny, with a high near 55. Light east wind.
Sunday Night
Mostly clear, with a low around 35. Calm wind becoming northeast around 5 mph.
Monday
Sunny, with a high near 60. Light east northeast wind.
Monday Night
Mostly clear, with a low around 37. Light northeast wind.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
A slight chance of rain after 10pm. Partly cloudy, with a low around 39.
New Year's Day
A chance of rain. Partly sunny, with a high near 54.
Thursday Night
Rain likely. Mostly cloudy, with a low around 39.
Friday
A chance of rain. Mostly cloudy, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Lakeport CA
 39.05°N 122.92°W (Elev. 1388 ft)
3:04 am PST Dec 27, 2025
12pm PST Dec 27, 2025-6pm PST Jan 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database