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Check Water Temperatures Before Your River Visit

Water temperatures below 70 degrees causes you to lose breathing & muscle control which can lead to drowning. The colder the water the more extreme the impacts. Enjoy the river by staying dry when water is cold. Read More >

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

90°F

32°C

Humidity 25%
Wind Speed WSW 9 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index87°F (31°C)
Last update 12 Jun 03:01 PM PDT
Extended Forecast for

9 Miles N Lakeport CA

Heat Advisory June 12, 03:53pm until June 13, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 12, 03:53pm until June 13, 10:00pm

    NOW until 10:00pm Sat

    Heat Advisory

  • Tonight

    Low: 56 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. West wind 5 to 9 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 59. Southwest wind 5 to 9 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Tonight
Clear, with a low around 56. West wind 5 to 8 mph becoming calm in the evening.
Saturday
Sunny and hot, with a high near 99. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 59. West wind 5 to 9 mph becoming calm in the evening.
Sunday
Sunny, with a high near 98. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
Clear, with a low around 59. Southwest wind 5 to 9 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 99. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 90.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 51.
Juneteenth
Patchy fog. Otherwise, sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles N Lakeport CA
 39.18°N 122.96°W (Elev. 1391 ft)
Last Update:
2:10 pm PDT Jun 12, 2026
Forecast Valid:
3pm PDT Jun 12, 2026-6pm PDT Jun 19, 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