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.

Fair

39°F

4°C

Humidity 79%
Wind Speed E 3 mph
Barometer 30.01 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 14 Nov 6:55 am CST
Extended Forecast for

Lostant IL

  • Today

    Today: Sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 70 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of rain after noon. Partly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Rain Likely

  • Tuesday

    Tuesday: A chance of rain before noon. Partly sunny, with a high near 46.

    High: 46 °F

    Chance Rain
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 70. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 35. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 52. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 32.
Monday
A 20 percent chance of rain after noon. Partly sunny, with a high near 49.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 33.
Tuesday
A chance of rain before noon. Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34.
Thursday
Rain likely. Mostly cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lostant IL
 41.14°N 89.07°W
Last Update:
4:01 am CST Nov 14, 2025
Forecast Valid:
7am CST Nov 14, 2025-6pm CST Nov 20, 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