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

Areas of Heavy Rainfall and Heat Early This Week

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and lower Mississippi River Valley today into Thursday. Rainfall totals of 5 to 10 inches are expected. Hot temperatures may cause heat illnesses over central and northern California and the Pacific Northwest through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

99°F

37°C

Humidity 14%
Wind Speed NNE 8 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Heat Index95°F (35°C)
Last update 15 Jun 01:52 PM PDT
Extended Forecast for

9 Miles ESE Illinois Valley OR

Heat Advisory June 15, 02:59pm until June 16, 11:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 15, 02:59pm until June 16, 11:00pm

    NOW until 11:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. North wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 81. North wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Northeast wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. North wind around 11 mph, with gusts as high as 22 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 86. North northwest wind around 10 mph.
Tonight
Partly cloudy, with a low around 64. North wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 81. North wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 60. Northeast wind 8 to 11 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 79. North wind around 11 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 60.
Juneteenth
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Sunny, with a high near 71.
Saturday Night
Clear, with a low around 54.
Sunday
Sunny, with a high near 74.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ESE Illinois Valley OR
 42.03°N 123.51°W (Elev. 3747 ft)
Last Update:
1:56 pm PDT Jun 15, 2026
Forecast Valid:
2pm PDT Jun 15, 2026-6pm PDT Jun 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation