Critical Fire Weather in the High Plains and Midwest; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

40°F

4°C

Humidity 86%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 18 Feb 10:52 AM PST
Extended Forecast for

14 Miles SE Agness OR

Winter Weather Advisory February 18, 11:30am until February 19, 10:00am
Winter Storm Warning February 18, 11:30am until February 19, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
Winter Storm Warning
  •  
    Winter Weather Advisory February 18, 11:30am until February 19, 10:00am
    Winter Storm Warning February 18, 11:30am until February 19, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 37 °F

    Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times.  Low around 31. South southeast wind 6 to 11 mph.  Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 31 °F

    Heavy Snow

  • Thursday

    Thursday: Snow.  High near 36. West wind 5 to 7 mph.  Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 36 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 25. North northwest wind around 5 mph becoming east after midnight.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: Snow likely.  Mostly cloudy, with a high near 39. South wind 6 to 9 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow.  Low around 34. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 34 °F

    Snow

  • Saturday

    Saturday: Snow before 10am, then rain and snow likely between 10am and 1pm, then rain likely after 1pm.  Snow level rising to 3400 feet in the afternoon. High near 44. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 44 °F

    Rain/Snow

  • Saturday Night

    Saturday Night: Rain likely before 10pm, then rain, possibly mixed with snow.  Snow level 3800 feet lowering to 3100 feet after midnight . Cloudy, with a low around 38.

    Low: 38 °F

    Rain/Snow

Detailed Forecast

Today
Snow, mainly before 3pm. High near 37. South southwest wind 8 to 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 31. South southeast wind 6 to 11 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Thursday
Snow. High near 36. West wind 5 to 7 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Thursday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 25. North northwest wind around 5 mph becoming east after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday
Snow likely. Mostly cloudy, with a high near 39. South wind 6 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Snow. Low around 34. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday
Snow before 10am, then rain and snow likely between 10am and 1pm, then rain likely after 1pm. Snow level rising to 3400 feet in the afternoon. High near 44. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday Night
Rain likely before 10pm, then rain, possibly mixed with snow. Snow level 3800 feet lowering to 3100 feet after midnight . Cloudy, with a low around 38.
Sunday
Rain, possibly mixed with snow. Snow level 3600 feet. Cloudy, with a high near 42.
Sunday Night
Rain, possibly mixed with snow. Snow level 3700 feet. Cloudy, with a low around 40.
Monday
Rain, possibly mixed with snow. Snow level 3300 feet. Cloudy, with a high near 43.
Monday Night
Rain and snow. Snow level 3100 feet. Cloudy, with a low around 38.
Tuesday
Rain and snow. Snow level 2700 feet rising to 3200 feet in the afternoon. Cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SE Agness OR
 42.42°N 123.87°W (Elev. 2461 ft)
9:42 am PST Feb 18, 2026
11am PST Feb 18, 2026-6pm PST Feb 24, 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