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

34°F

1°C

Humidity 75%
Wind Speed Calm
Barometer 30.28 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 11 Feb 11:41 pm CST
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. West northwest wind around 5 mph becoming calm.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of snow, mixing with rain after 11am, then gradually ending. Cloudy through mid morning, then gradual clearing, with a high near 48. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. South wind around 5 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. West northwest wind around 5 mph becoming calm.
Thursday
A slight chance of snow, mixing with rain after 11am, then gradually ending. Cloudy through mid morning, then gradual clearing, with a high near 48. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 28. South wind around 5 mph.
Friday
Sunny, with a high near 53. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 31. Southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Partly sunny, with a high near 54.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36.
Sunday
Sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 33.
Washington's Birthday
Mostly cloudy, with a high near 57.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
A chance of rain. Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.12°W
Last Update:
9:46 pm CST Feb 11, 2026
Forecast Valid:
11pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
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