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

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

55°F

13°C

Humidity 28%
Wind Speed NW 7 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 18 Apr 02:01 AM PDT
Extended Forecast for

9 Miles ESE Calpella CA

Frost Advisory April 18, 02:59am until April 18, 08:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory April 18, 02:59am until April 18, 08:00am

    NOW until 8:00am Sat

    Frost Advisory

  • Overnight

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 72. Southeast wind 5 to 8 mph.

    High: 72 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50. Light and variable wind becoming southeast 5 to 7 mph after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66. South wind 6 to 10 mph.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 47. Southeast wind 8 to 11 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance Rain

  • Monday

    Monday: Rain. High near 55. Southeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 55 °F

    Rain

  • Monday Night

    Monday Night: Showers. Low around 46. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am. Cloudy, with a high near 53.

    High: 53 °F

    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 46. Calm wind.
Saturday
Increasing clouds, with a high near 72. Southeast wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 50. Light and variable wind becoming southeast 5 to 7 mph after midnight.
Sunday
Partly sunny, with a high near 66. South wind 6 to 10 mph.
Sunday Night
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 47. Southeast wind 8 to 11 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain. High near 55. Southeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Showers. Low around 46. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. Cloudy, with a high near 53.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain. Partly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ESE Calpella CA
 39.19°N 123.05°W (Elev. 2031 ft)
Last Update:
2:10 am PDT Apr 18, 2026
Forecast Valid:
2am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation