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

Heavy Rain Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

Heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest into Sunday. The tropical wave (AL94) continues to bring heavy rainfall to Puerto Rico and the US Virgin Islands. The close proximity of Tropical Storm Humberto and AL94 could lead to interaction between them, but details of their track and intensity forecasts remain uncertain Read More >

Current conditions at

LYONS VALLEY (COWC1)

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

NA

64°F

18°C

Humidity 40%
Wind Speed E 8 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 25 Sep 04:01 AM PDT
Extended Forecast for

Lakeport CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 61. West northwest wind 5 to 7 mph becoming light and variable in the evening.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. Southwest wind 5 to 8 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain after 11pm. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Rain

  • Monday

    Monday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 66.

    High: 66 °F

    Rain Likely

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 57. West northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Clear, with a low around 61. West northwest wind 5 to 7 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 87. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 53. Southwest wind 5 to 8 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A slight chance of rain after 11pm. Mostly cloudy, with a low around 53.
Monday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 66.
Monday Night
Rain likely. Mostly cloudy, with a low around 51.
Tuesday
Rain likely. Mostly cloudy, with a high near 62.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
A chance of rain. Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lakeport CA
 39.05°N 122.92°W (Elev. 1388 ft)
Last Update:
11:27 pm PDT Sep 24, 2025
Forecast Valid:
5am PDT Sep 25, 2025-6pm PDT Oct 1, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation