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

7°F

-14°C

Humidity 71%
Wind Speed N 12 mph
Barometer 30.33 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 7 Dec 8:55 pm CST
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 11 by 4am. Wind chill values as low as -5. North wind around 5 mph becoming calm after midnight.

    Low: 6 °F⇑

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 24. Calm wind becoming southeast around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 24 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a temperature rising to around 26 by 4am. South wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 18 °F⇑

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 37. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 37 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Cloudy, with a low around 33. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: A 20 percent chance of snow. Mostly cloudy, with a high near 35. Breezy.

    High: 35 °F

    Slight Chance
    Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 24.

    High: 24 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before midnight. Mostly cloudy, with a low around 6.

    Low: 6 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 11 by 4am. Wind chill values as low as -5. North wind around 5 mph becoming calm after midnight.
Monday
Partly sunny, with a high near 24. Calm wind becoming southeast around 5 mph in the morning. Winds could gust as high as 10 mph.
Monday Night
Mostly cloudy, with a temperature rising to around 26 by 4am. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly cloudy, with a high near 37. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain likely, mainly before midnight. Cloudy, with a low around 33. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 35. Breezy.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 18.
Thursday
A chance of snow. Mostly cloudy, with a high near 24.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 6.
Friday
Partly sunny, with a high near 15.
Friday Night
Mostly cloudy, with a low around -2.
Saturday
Partly sunny and cold, with a high near 8.
Saturday Night
Mostly cloudy, with a low around -3.
Sunday
Mostly sunny, with a high near 14.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.34°N 89.14°W
Last Update:
8:46 pm CST Dec 7, 2025
Forecast Valid:
9pm CST Dec 7, 2025-6pm CST Dec 14, 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