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 and Breezy

44°F

7°C

Humidity 94%
Wind Speed W 25 G 31 mph
Barometer 29.84 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 7 Mar 12:50 pm CST
Extended Forecast for

Lostant IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 61. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F

    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 34. West northwest wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 65. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 65 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 45. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Chance of precipitation is 60%.

    High: 76 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers, mainly before noon. Cloudy, with a high near 56. Breezy.

    High: 56 °F

    Showers and
    Breezy

Detailed Forecast

This Afternoon
Cloudy, with a high near 61. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 34. West northwest wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 65. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 45. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 40. Breezy.
Wednesday
Showers, mainly before noon. Cloudy, with a high near 56. Breezy.
Wednesday Night
Partly cloudy, with a low around 26. Blustery.
Thursday
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 38. Breezy.
Friday
Mostly cloudy, with a high near 60. Breezy.
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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:
12:36 pm CST Mar 7, 2026
Forecast Valid:
1pm CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation