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

53°F

12°C

Humidity 25%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 17 Apr 11:01 PM PDT
Extended Forecast for

10 Miles NNW Lakeport CA

Frost Advisory April 18, 01:00am until April 18, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 37. Northwest wind around 6 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 73. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 73 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. West northwest wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 69. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 69 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 43. Southeast wind 6 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance Rain

  • Monday

    Monday: Rain. High near 57. Southeast wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: Showers. Low around 42. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am. Cloudy, with a high near 55.

    High: 55 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 37. Northwest wind around 6 mph.
Saturday
Increasing clouds, with a high near 73. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 45. West northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 69. Calm wind becoming south 5 to 9 mph in the afternoon.
Sunday Night
A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 43. Southeast wind 6 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. High near 57. Southeast wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Showers. Low around 42. 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 55.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 39.
Wednesday
A chance of rain. Partly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Lakeport CA
 39.17°N 122.98°W (Elev. 1998 ft)
Last Update:
11:51 pm PDT Apr 17, 2026
Forecast Valid:
12am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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