National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

43°F

6°C

Humidity 100%
Wind Speed WSW 12 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 26 Dec 02:01 PM PST
Extended Forecast for

8 Miles NNE Hopland CA

Flood Watch December 26, 02:59pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 26, 02:59pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • This Afternoon

    High: 44 °F

    Showers

  • Tonight

    Tonight: Showers likely, mainly before 7pm. Mostly cloudy, with a low around 36. Northwest wind 9 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 46. North northwest wind around 6 mph.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. North wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 52. East northeast wind around 6 mph.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42. Northeast wind around 6 mph.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 44. West southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely, mainly before 7pm. Mostly cloudy, with a low around 36. Northwest wind 9 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 46. North northwest wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 39. North wind 3 to 5 mph.
Sunday
Sunny, with a high near 52. East northeast wind around 6 mph.
Sunday Night
Clear, with a low around 42. Northeast wind around 6 mph.
Monday
Sunny, with a high near 56.
Monday Night
Clear, with a low around 44.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 57.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 45.
New Year's Day
A chance of rain. Mostly cloudy, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNE Hopland CA
 39.07°N 123.07°W (Elev. 2654 ft)
Last Update:
1:41 pm PST Dec 26, 2025
Forecast Valid:
2pm PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation