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

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

20°F

-7°C

Humidity 93%
Wind Speed W 8 mph
Barometer 30.07 in
Dewpoint 18°F (-8°C)
Visibility 7.00 mi
Wind Chill10°F (-12°C)
Last update 2 Dec 11:15 am CST
Extended Forecast for

3 Miles W Lostant IL

  • Today

    Today: Partly sunny, with a high near 23. West wind 5 to 10 mph becoming south southwest in the afternoon.

    High: 23 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 23 by 4am. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 18 °F⇑

    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely after noon. Mostly cloudy, with a high near 33. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Mostly Cloudy
    then Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: -2 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny and cold, with a high near 10. North northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.

    High: 10 °F

    Cold

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -4.

    Low: -4 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 23. West wind 5 to 10 mph becoming south southwest in the afternoon.
Tonight
Mostly cloudy, with a temperature rising to around 23 by 4am. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Snow likely after noon. Mostly cloudy, with a high near 33. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny and cold, with a high near 10. North northwest wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around -4.
Friday
Partly sunny, with a high near 25.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Partly sunny, with a high near 27.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 14.
Sunday
Partly sunny, with a high near 24.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Mostly cloudy, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Lostant IL
 41.14°N 89.13°W
Last Update:
9:31 am CST Dec 2, 2025
Forecast Valid:
11am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation