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

60°F

16°C

Humidity 52%
Wind Speed W 14 mph
Barometer 29.66 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 Nov 5:35 pm CST
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Mostly clear, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 50. Calm wind becoming east southeast around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 50 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Rain likely. Cloudy, with a low around 39. East southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 39 °F

    Rain Likely

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 29. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Monday
Increasing clouds, with a high near 50. Calm wind becoming east southeast around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Rain likely. Cloudy, with a low around 39. East southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 50.
Wednesday Night
A chance of rain after midnight. Mostly cloudy, with a low around 40.
Thursday
Rain likely, mainly after noon. Mostly cloudy, with a high near 56.
Thursday Night
Rain likely. Mostly cloudy, with a low around 45.
Friday
Rain likely. Mostly cloudy, with a high near 56.
Friday Night
A chance of rain. Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.14°W
Last Update:
4:21 pm CST Nov 15, 2025
Forecast Valid:
5pm CST Nov 15, 2025-6pm CST Nov 22, 2025
 
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