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 >

Current conditions at

LYONS VALLEY (COWC1)

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

NA

77°F

25°C

Humidity 28%
Wind Speed WNW 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index78°F (26°C)
Last update 12 Jul 09:01 AM PDT
Extended Forecast for

4 Miles NNW Hopland CA

  • Today

    Today: Partly sunny and hot, with a high near 99. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. North northwest wind 6 to 9 mph.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 96. North wind 5 to 7 mph becoming south southwest in the morning.

    High: 96 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. West wind 5 to 8 mph becoming north northwest after midnight.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 10 percent chance of showers and thunderstorms before 11am.  Sunny, with a high near 97. North wind 5 to 9 mph becoming west in the morning.

    High: 97 °F

    Slight Chance
    T-storms then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Partly sunny and hot, with a high near 99. Calm wind becoming west 5 to 9 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 60. North northwest wind 6 to 9 mph.
Monday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 96. North wind 5 to 7 mph becoming south southwest in the morning.
Monday Night
Mostly clear, with a low around 59. West wind 5 to 8 mph becoming north northwest after midnight.
Tuesday
A 10 percent chance of showers and thunderstorms before 11am. Sunny, with a high near 97. North wind 5 to 9 mph becoming west in the morning.
Tuesday Night
Mostly clear, with a low around 57. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Hopland CA
 39.03°N 123.15°W (Elev. 597 ft)
2:10 am PDT Jul 12, 2026
9am PDT Jul 12, 2026-6pm PDT Jul 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database