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

LYONS VALLEY (COWC1)

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

NA

36°F

2°C

Humidity 99%
Wind Speed S 3 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 11 Apr 08:01 PM PDT
Extended Forecast for

10 Miles NNW Lakeport CA

  • Tonight

    Tonight: A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 39. Southeast wind 6 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 52. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 36. Northwest wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers and
    Patchy Fog
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am. Patchy frost after 5am. Otherwise, partly cloudy, with a low around 36. West northwest wind 5 to 9 mph becoming light northwest after midnight.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Frost and
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Patchy frost before 8am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 64 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 11pm. Partly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 39. Southeast wind 6 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 52. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of showers before 11pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 36. Northwest wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.
Monday Night
Patchy fog after 2am. Patchy frost after 5am. Otherwise, partly cloudy, with a low around 36. West northwest wind 5 to 9 mph becoming light northwest after midnight.
Tuesday
Patchy fog before 11am. Patchy frost before 8am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west 5 to 8 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 38.
Thursday
Sunny, with a high near 68.
Thursday Night
Clear, with a low around 37.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 40.
Saturday
A slight chance of rain. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Lakeport CA
 39.17°N 122.98°W (Elev. 1998 ft)
Last Update:
2:10 pm PDT Apr 11, 2026
Forecast Valid:
8pm PDT Apr 11, 2026-6pm PDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation