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

64°F

18°C

Humidity 26%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 17 Apr 11:01 AM 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

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. Calm wind becoming west northwest 5 to 7 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming light north northwest after midnight.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 68. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 68 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 11pm. Mostly cloudy, with a low around 43. Southeast wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain Likely

  • Monday

    Monday: Rain. High near 57. 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: Rain likely. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 55.

    High: 55 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 70. Calm wind becoming west northwest 5 to 7 mph.
Tonight
Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming light north northwest after midnight.
Saturday
Mostly sunny, with a high near 73. Calm wind becoming south 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 44. South southwest wind 5 to 7 mph becoming calm in the evening.
Sunday
A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 68. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 43. Southeast wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain. High near 57. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Rain likely. Mostly cloudy, with a low around 41.
Tuesday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 55.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 39.
Wednesday
A chance of rain. Partly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Sunny, with a high near 70.
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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:
6:02 am PDT Apr 17, 2026
Forecast Valid:
12pm PDT Apr 17, 2026-6pm PDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation