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

33°F

1°C

Humidity 72%
Wind Speed W 14 G 18 mph
Barometer 29.62 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 25 Feb 12:20 am CST
Extended Forecast for

Peru IL

  • Overnight

    Overnight: Partly cloudy, with a low around 25. West northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 38. West northwest wind 10 to 15 mph.

    High: 38 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 22. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 22 °F

    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 45. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Southwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. Breezy.

    High: 62 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of snow after noon. Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 25. West northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 38. West northwest wind 10 to 15 mph.
Wednesday Night
A 40 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 22. West northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Thursday
Mostly sunny, with a high near 45. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 29. Southwest wind around 5 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 62. Breezy.
Friday Night
Mostly clear, with a low around 30.
Saturday
A chance of snow after noon. Partly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
A chance of snow after noon. Partly sunny, with a high near 35.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 22.
Monday
Mostly cloudy, with a high near 34.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.12°W
Last Update:
12:20 am CST Feb 25, 2026
Forecast Valid:
12am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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