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

52°F

11°C

Humidity 90%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 21 Mar 08:52 AM PDT
Extended Forecast for

16 Miles SE Agness OR

  • Today

    Today: Sunny, with a high near 57. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. North wind 6 to 8 mph becoming east in the evening.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Northeast wind 7 to 10 mph.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 60. Northeast wind 5 to 7 mph becoming west southwest in the afternoon.

    High: 60 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely.  Mostly cloudy, with a high near 54. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, possibly mixed with snow before 2pm, then a chance of rain.  Snow level 5800 feet lowering to 5000 feet in the afternoon . Partly sunny, with a high near 53.

    High: 53 °F

    Rain/Snow
    Likely

Detailed Forecast

Today
Sunny, with a high near 57. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 39. North wind 6 to 8 mph becoming east in the evening.
Sunday
Mostly sunny, with a high near 61. Northeast wind 7 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.
Monday
Partly sunny, with a high near 60. Northeast wind 5 to 7 mph becoming west southwest in the afternoon.
Monday Night
A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 48.
Tuesday
Rain likely. Mostly cloudy, with a high near 54. 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 44.
Wednesday
Rain likely, possibly mixed with snow before 2pm, then a chance of rain. Snow level 5800 feet lowering to 5000 feet in the afternoon . Partly sunny, with a high near 53.
Wednesday Night
A slight chance of rain, mixing with snow after 8pm, then gradually ending. Snow level 4800 feet lowering to 3300 feet after midnight . Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
4:41 am PDT Mar 21, 2026
9am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
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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