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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

51°F

11°C

Humidity 63%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 18 Mar 09:52 AM PDT
Extended Forecast for

17 Miles SSE Agness OR

  • Today

    Today: Sunny, with a high near 69. Southwest wind 3 to 6 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind around 6 mph becoming southeast after midnight.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68. Southeast wind 5 to 7 mph becoming southwest in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. West southwest wind 5 to 8 mph becoming south southeast after midnight.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of rain after 11am. Mostly sunny, with a high near 68. South southeast wind 5 to 8 mph becoming west in the afternoon.

    High: 68 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain before 11am. Snow level 6500 feet lowering to 5200 feet. Partly sunny, with a high near 57.

    High: 57 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 69. Southwest wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 56. Southwest wind around 6 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 68. Southeast wind 5 to 7 mph becoming southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 53. West southwest wind 5 to 8 mph becoming south southeast after midnight.
Friday
A 20 percent chance of rain after 11am. Mostly sunny, with a high near 68. South southeast wind 5 to 8 mph becoming west in the afternoon.
Friday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 47.
Saturday
A 30 percent chance of rain before 11am. Snow level 6500 feet lowering to 5200 feet. Partly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 40.
Monday
A slight chance of rain. Snow level 5000 feet rising to 5900 feet in the afternoon. Partly sunny, with a high near 60.
Monday Night
A chance of rain. Mostly cloudy, with a low around 44.
Tuesday
Rain likely. Mostly cloudy, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
4:41 am PDT Mar 18, 2026
Forecast Valid:
10am PDT Mar 18, 2026-6pm PDT Mar 24, 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