Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

44°F

7°C

Humidity 98%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 01 Apr 04:52 AM PDT
Extended Forecast for

14 Miles SE Agness OR

  • Overnight

    Overnight: A 50 percent chance of rain.  Snow level 4400 feet. Cloudy, with a low around 42. South southwest wind around 13 mph, with gusts as high as 21 mph.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm.  Snow level 5200 feet lowering to 3500 feet in the afternoon . High near 44. South southwest wind 13 to 17 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 44 °F

    Showers

  • Wednesday Night

    Wednesday Night: Snow showers, possibly mixed with rain. Some thunder is also possible.  Snow level 3000 feet lowering to 2500 feet after midnight . Low around 37. Southwest wind 11 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow, becoming all rain after 11am.  Snow level 2600 feet rising to 3700 feet in the afternoon. High near 46. West southwest wind 5 to 8 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow
    then Rain
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 11pm.  Snow level 4000 feet lowering to 3400 feet after midnight . Mostly clear, with a low around 34. Northwest wind around 5 mph becoming east northeast after midnight.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of rain. Snow level 4400 feet. Cloudy, with a low around 42. South southwest wind around 13 mph, with gusts as high as 21 mph.
Wednesday
Rain, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Snow level 5200 feet lowering to 3500 feet in the afternoon . High near 44. South southwest wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Snow showers, possibly mixed with rain. Some thunder is also possible. Snow level 3000 feet lowering to 2500 feet after midnight . Low around 37. Southwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Rain and snow, becoming all rain after 11am. Snow level 2600 feet rising to 3700 feet in the afternoon. High near 46. West southwest wind 5 to 8 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday Night
A 20 percent chance of rain before 11pm. Snow level 4000 feet lowering to 3400 feet after midnight . Mostly clear, with a low around 34. Northwest wind around 5 mph becoming east northeast after midnight.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 44.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 68.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SE Agness OR
 42.42°N 123.87°W (Elev. 2461 ft)
4:41 am PDT Apr 1, 2026
5am PDT Apr 1, 2026-6pm PDT Apr 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

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