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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

78°F

26°C

Humidity 16%
Wind Speed N 11 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Heat Index77°F (25°C)
Last update 17 Jun 09:52 PM PDT
Extended Forecast for

13 Miles WNW Happy Camp CA

Fire Weather Watch June 19, 04:00am until June 19, 07:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. North wind 5 to 9 mph becoming east after midnight.

    Low: 58 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. West wind around 6 mph becoming light and variable in the evening.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 66. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. West northwest wind around 6 mph becoming calm in the evening.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 50.

    Low: 50 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. North wind 5 to 9 mph becoming east after midnight.
Thursday
Sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. West wind around 6 mph becoming light and variable in the evening.
Juneteenth
Mostly sunny, with a high near 66. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 50. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 65.
Saturday Night
Clear, with a low around 50.
Sunday
Sunny, with a high near 70.
Sunday Night
Clear, with a low around 55.
Monday
Sunny, with a high near 74.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles WNW Happy Camp CA
 41.88°N 123.59°W (Elev. 4600 ft)
Last Update:
10:40 pm PDT Jun 17, 2026
Forecast Valid:
10pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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