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

KONOCTI (KELC1)

Lat: 38.91189°NLon: 122.70631°WElev: 2163.0ft.

NA

49°F

9°C

Humidity 45%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 18 Apr 04:57 AM PDT
Extended Forecast for

Clearlake CA

  • Today

    Today: Mostly sunny, with a high near 74. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. South wind around 6 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 71. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 43. South southwest wind 5 to 9 mph becoming light southwest in the evening.

    Low: 43 °F

    Chance Rain

  • Monday

    Monday: Rain likely. Mostly cloudy, with a high near 60. South wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Rain Likely

  • Monday Night

    Monday Night: Showers. Low around 43. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 56. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain. Partly sunny, with a high near 61.

    High: 61 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 74. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 46. South wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 71. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 43. South southwest wind 5 to 9 mph becoming light southwest in the evening.
Monday
Rain likely. Mostly cloudy, with a high near 60. South wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Showers. Low around 43. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm. High near 56. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Partly sunny, with a high near 61.
Wednesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 38.
Thursday
Patchy fog. Otherwise, sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clearlake CA
 38.96°N 122.63°W (Elev. 1348 ft)
Last Update:
2:10 am PDT Apr 18, 2026
Forecast Valid:
5am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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