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° N Lon: 123.68519° W Elev: 1389.0 ft.

NA

83°F

28°C

Humidity 22%
Wind Speed E 2 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index81°F (27°C)
Last update 19 Mar 02:52 PM PDT
Detailed forecast for

Eastern Curry County and Josephine County

Tonight
Mostly clear until well after midnight then becoming partly cloudy. Lows in the lower 40s to lower 50s in the valleys and in the lower 50s to lower 60s at higher elevations. South winds around 5 mph.
Friday
Partly cloudy in the morning then clearing. Highs in the mid 60s to mid 70s. Southeast winds around 5 mph shifting to the west in the afternoon.
Friday Night
Clear in the evening, then mostly cloudy with a 10 percent chance of rain after midnight. Lows in the mid 40s to lower 50s. Northwest winds 5 to 10 mph.
Saturday
Mostly cloudy with a 20 percent chance of rain in the morning, then sunny in the afternoon. Highs in the lower 50s to lower 60s. Northwest winds 5 to 10 mph shifting to the north in the late morning and afternoon.
Saturday Night
Mostly clear. Lows in the lower 30s to lower 40s. North winds 5 to 10 mph in the valleys and north 10 to 15 mph at higher elevations.
Sunday
Sunny. Highs in the mid 50s to mid 60s.
Sunday Night And Monday
Mostly cloudy. Lows in the mid 30s to mid 40s. Highs in the mid 50s to mid 60s.
Monday Night
Mostly cloudy. Slight chance of rain after midnight. Lows in the mid 40s to lower 50s.
Tuesday
Mostly cloudy with a chance of rain. Highs in the lower 60s to lower 70s.
Tuesday Night
Rain likely. Lows in the lower to mid 40s.
Wednesday
Mostly cloudy with a chance of rain. Cooler. Highs in the mid 40s to mid 50s.
Wednesday Night
Partly cloudy with a slight chance of rain and snow in the evening, then mostly clear after midnight. Lows in the mid 30s to lower 40s.
Thursday
Sunny, warmer. Highs in the lower to mid 60s.



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207 PM PDT Thu Mar 19 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database