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

47°F

8°C

Humidity 28%
Wind Speed E 6 mph
Barometer 30.41 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 23 Mar 4:50 pm CDT
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Increasing clouds, with a low around 30. Northeast wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 15 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 30. Northeast wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 15 mph.
Tuesday
Partly sunny, with a high near 55. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 70. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 54. South wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Thursday Night
A 50 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 47.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.34°N 89.11°W
Last Update:
2:46 pm CDT Mar 23, 2026
Forecast Valid:
5pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
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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