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

39°F

4°C

Humidity 86%
Wind Speed E 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 27 Dec 06:01 PM PST
Extended Forecast for

5 Miles W Lakeport CA

  • Tonight

    Tonight: Partly cloudy, with a low around 41. North wind 5 to 7 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 52. North northeast wind around 5 mph becoming light and variable  in the morning.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. North northeast wind 5 to 7 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56. Northeast wind 5 to 7 mph becoming calm  in the afternoon.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 46. East northeast wind around 8 mph.

    Low: 46 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. East northeast wind 6 to 8 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 4am.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 41. North wind 5 to 7 mph.
Sunday
Sunny, with a high near 52. North northeast wind around 5 mph becoming light and variable in the morning.
Sunday Night
Mostly clear, with a low around 44. North northeast wind 5 to 7 mph.
Monday
Sunny, with a high near 56. Northeast wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Clear, with a low around 46. East northeast wind around 8 mph.
Tuesday
Sunny, with a high near 57. East northeast wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 47.
New Year's Day
Rain likely, mainly after 10am. Mostly cloudy, with a high near 51.
Thursday Night
Rain likely. Mostly cloudy, with a low around 47.
Friday
A chance of rain. Mostly cloudy, with a high near 49.
Friday Night
A chance of rain. Mostly cloudy, with a low around 44.
Saturday
A chance of rain. Partly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Lakeport CA
 39.03°N 123.03°W (Elev. 2398 ft)
1:10 pm PST Dec 27, 2025
7pm PST Dec 27, 2025-6pm PST Jan 3, 2026
 
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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