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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

49°F

9°C

Humidity 95%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 31 Jul 05:52 AM PDT
Extended Forecast for

14 Miles ESE Cave Junction OR

  • Today

    Today: Sunny, with a high near 77. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 69. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. North northeast wind around 11 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Northeast wind 8 to 11 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 77. Calm wind becoming west 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 69. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 48. North northeast wind around 11 mph.
Sunday
Sunny, with a high near 67. Northeast wind 8 to 11 mph.
Sunday Night
Clear, with a low around 48.
Monday
Sunny, with a high near 75.
Monday Night
Clear, with a low around 55.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Clear, with a low around 59.
Thursday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles ESE Cave Junction OR
 42.09°N 123.38°W (Elev. 5157 ft)
Last Update:
4:40 am PDT Jul 31, 2026
Forecast Valid:
6am PDT Jul 31, 2026-6pm PDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation