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

45°F

7°C

Humidity 46%
Wind Speed NW 8 mph
Barometer 30.27 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 11 Feb 5:01 pm CST
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Increasing clouds, with a low around 28. West northwest wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Increasing
    Clouds

  • 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
Increasing clouds, with a low around 28. West northwest wind around 5 mph becoming calm in the evening.
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:
3:11 pm CST Feb 11, 2026
Forecast Valid:
5pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
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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