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

40°F

4°C

Humidity 84%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 27 Dec 09:01 PM PST
Extended Forecast for

10 Miles NNW Lakeport CA

  • Tonight

    Tonight: Partly cloudy, with a low around 33. North northwest wind 3 to 5 mph.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Light northeast wind.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62. East wind 3 to 5 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 38. East northeast wind around 7 mph.

    Low: 38 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63. East northeast wind around 6 mph becoming southeast in the afternoon.

    High: 63 °F

    Sunny

  • Tuesday Night

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

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 4am.  Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 33. North northwest wind 3 to 5 mph.
Sunday
Sunny, with a high near 58. Light and variable wind.
Sunday Night
Mostly clear, with a low around 35. Light northeast wind.
Monday
Sunny, with a high near 62. East wind 3 to 5 mph.
Monday Night
Clear, with a low around 38. East northeast wind around 7 mph.
Tuesday
Sunny, with a high near 63. East northeast wind around 6 mph becoming southeast in the afternoon.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Partly sunny, with a high near 63.
Wednesday Night
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 41.
New Year's Day
Rain likely, mainly after 10am. Mostly cloudy, with a high near 57.
Thursday Night
Rain likely. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Mostly cloudy, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 38.
Saturday
A chance of rain. Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Lakeport CA
 39.17°N 122.98°W (Elev. 1998 ft)
1:10 pm PST Dec 27, 2025
10pm PST Dec 27, 2025-6pm PST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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