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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

NA

91°F

33°C

Humidity 23%
Wind Speed SSW 3 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Heat Index88°F (31°C)
Last update 24 Aug 12:52 PM PDT
Extended Forecast for

15 Miles NE Happy Camp CA

Red Flag Warning until August 24, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until August 24, 08:00pm

    NOW until 8:00pm Mon

    Red Flag Warning

  • This Afternoon

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Southwest wind 6 to 11 mph becoming east in the evening. Winds could gust as high as 18 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 76. South southeast wind 6 to 9 mph becoming west southwest in the afternoon.

    High: 76 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. West wind 5 to 9 mph becoming light and variable after midnight.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 80. South southwest wind 7 to 9 mph.
Tonight
Increasing clouds, with a low around 59. Southwest wind 6 to 11 mph becoming east in the evening. Winds could gust as high as 18 mph.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 76. South southeast wind 6 to 9 mph becoming west southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 56. West wind 5 to 9 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the morning.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 70.
Friday Night
Clear, with a low around 49.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NE Happy Camp CA
 41.93°N 123.13°W (Elev. 4816 ft)
Last Update:
11:26 am PDT Aug 24, 2026
Forecast Valid:
1pm PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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