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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

63°F

17°C

Humidity 53%
Wind Speed NNE 7 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Mar 10:52 AM PDT
Extended Forecast for

7 Miles SW Illinois Valley OR

  • Today

    Today: Sunny, with a high near 61. Northeast wind 6 to 8 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Northeast wind around 10 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63. Northeast wind around 10 mph.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39. Northeast wind around 7 mph.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 61. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 61 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain. Snow level 6300 feet lowering to 5300 feet in the afternoon . Partly sunny, with a high near 55.

    High: 55 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 61. Northeast wind 6 to 8 mph.
Tonight
Partly cloudy, with a low around 37. Northeast wind around 10 mph.
Sunday
Partly sunny, with a high near 63. Northeast wind around 10 mph.
Sunday Night
Mostly cloudy, with a low around 39. Northeast wind around 7 mph.
Monday
Partly sunny, with a high near 61. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 45.
Tuesday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 41.
Wednesday
A chance of rain. Snow level 6300 feet lowering to 5300 feet in the afternoon . Partly sunny, with a high near 55.
Wednesday Night
A slight chance of rain before 11pm. Snow level 5100 feet lowering to 3600 feet after midnight . Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Illinois Valley OR
 42.03°N 123.78°W (Elev. 2428 ft)
Last Update:
10:41 am PDT Mar 21, 2026
Forecast Valid:
11am PDT Mar 21, 2026-6pm PDT Mar 27, 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