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

35°F

2°C

Humidity 99%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 20 Mar 06:52 AM PDT
Extended Forecast for

16 Miles SE Agness OR

  • Today

    Today: Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 1am and 3am. Mostly cloudy, with a low around 51. Northwest wind around 7 mph.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 57. North wind 6 to 10 mph.

    High: 57 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. Northeast wind 7 to 11 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60. East northeast wind around 10 mph.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of rain after 11pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Partly sunny, with a high near 59.

    High: 59 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
A 30 percent chance of rain, mainly between 1am and 3am. Mostly cloudy, with a low around 51. Northwest wind around 7 mph.
Saturday
A 30 percent chance of rain, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 57. North wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 39. Northeast wind 7 to 11 mph.
Sunday
Mostly sunny, with a high near 60. East northeast wind around 10 mph.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 62.
Monday Night
A slight chance of rain after 11pm. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Partly sunny, with a high near 59.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 47.
Wednesday
A chance of rain and snow. Snow level 6200 feet lowering to 5200 feet in the afternoon . Partly sunny, with a high near 52.
Wednesday Night
A slight chance of rain. Snow level 5100 feet lowering to 3400 feet after midnight . Partly cloudy, with a low around 38.
Thursday
Sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
Last Update:
4:41 am PDT Mar 20, 2026
Forecast Valid:
7am PDT Mar 20, 2026-6pm PDT Mar 26, 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