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

Excessive Rainfall Possible for the Gulf Coast and Florida; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across parts of the Gulf Coast into central/northern Florida early this week. Abnormally hot, potentially record-breaking, temperatures will continue for southern California and stretch north toward the Bay Area and Central Valley this week. Read More >

Hazardous Weather Conditions

Current conditions at

LYONS VALLEY (COWC1)

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

NA

86°F

30°C

Humidity 18%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index83°F (28°C)
Last update 04 Oct 05:01 PM PDT
Extended Forecast for

Hopland CA

Heat Advisory October 4, 05:46pm until October 5, 11:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 4, 05:46pm until October 5, 11:00pm

    NOW until 11:00pm Mon

    Heat Advisory

  • Tonight

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 102. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 102 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 60. West wind 5 to 9 mph becoming calm in the evening.

    Low: 60 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57. West wind 5 to 8 mph becoming calm in the evening.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 60. West northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 102. Calm wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Clear, with a low around 60. West wind 5 to 9 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 100. Calm wind becoming west southwest around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 57. West wind 5 to 8 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 99. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 55.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Clear, with a low around 52.
Friday
Sunny, with a high near 92.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 46.
Saturday
Patchy fog. Otherwise, sunny, with a high near 81.
Saturday Night
Patchy fog. Otherwise, mostly clear, with a low around 45.
Sunday
Patchy fog. Otherwise, sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hopland CA
 38.97°N 123.1°W (Elev. 577 ft)
Last Update:
2:10 pm PDT Oct 4, 2026
Forecast Valid:
5pm PDT Oct 4, 2026-6pm PDT Oct 11, 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