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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

73°F

23°C

Humidity 27%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 19 Mar 12:52 PM PDT
Extended Forecast for

16 Miles SE Agness OR

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. West southwest wind 6 to 8 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 49. North northwest wind 6 to 8 mph.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 11am. Mostly sunny, with a high near 61. North wind 6 to 9 mph.

    High: 61 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. West southwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.
Friday Night
A 40 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 49. North northwest wind 6 to 8 mph.
Saturday
A 30 percent chance of showers before 11am. Mostly sunny, with a high near 61. North wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 69.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 51.
Tuesday
A chance of showers. Partly sunny, with a high near 65.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 44.
Wednesday
A chance of showers. Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.38°N 123.82°W (Elev. 1316 ft)
Last Update:
10:41 am PDT Mar 19, 2026
Forecast Valid:
1pm PDT Mar 19, 2026-6pm PDT Mar 25, 2026
 
Forecast Discussion
 
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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