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

41°F

5°C

Humidity 87%
Wind Speed E 6 mph
Barometer 30.12 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 9 Jan 10:38 pm CST
Extended Forecast for

Lostant IL

  • Tonight

    Tonight: Rain, mainly after 3am. Steady temperature around 40. East wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Cloudy then
    Rain

  • Saturday

    Saturday: Rain and snow showers before 10am, then a slight chance of rain between 10am and 11am, then a chance of snow showers after 11am. Temperature falling to around 32 by 5pm. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 37 °F⇓

    Rain/Snow
    then Chance
    Snow Showers
    and Breezy

  • Saturday Night

    Saturday Night: Scattered snow showers before midnight. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Blustery.
    Scattered
    Snow Showers
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 32 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Monday Night

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

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain after noon. Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain, mainly after 3am. Steady temperature around 40. East wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and snow showers before 10am, then a slight chance of rain between 10am and 11am, then a chance of snow showers after 11am. Temperature falling to around 32 by 5pm. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday Night
Scattered snow showers before midnight. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 24. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
A chance of rain after noon. Mostly cloudy, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
A chance of snow after noon. Mostly cloudy, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 30.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22.
Friday
A chance of snow. Mostly cloudy, with a high near 34.
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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:
10:26 pm CST Jan 9, 2026
Forecast Valid:
10pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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