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

Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

70°F

21°C

Humidity 24%
Wind Speed NW 14 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 20 Aug 04:01 AM PDT
Extended Forecast for

4 Miles ENE Hopland CA

Heat Advisory August 22, 11:00am until August 23, 11:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 95. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 61. West northwest wind 8 to 13 mph becoming light and variable in the evening.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 101 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 67. Southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 67 °F

    Mostly Clear

  • Saturday

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

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 95. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon.
Tonight
Clear, with a low around 61. West northwest wind 8 to 13 mph becoming light and variable in the evening.
Thursday
Sunny and hot, with a high near 99. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Mostly clear, with a low around 61. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Friday
Sunny and hot, with a high near 101. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Friday Night
Mostly clear, with a low around 67. Southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 97.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Hopland CA
 38.98°N 123.05°W (Elev. 1129 ft)
Last Update:
10:14 pm PDT Aug 19, 2025
Forecast Valid:
4am PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
Forecast Discussion
 
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Additional Resources

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