National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

66°F

19°C

Humidity 46%
Wind Speed E 16 mph
Barometer 30.16 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 May 7:00 pm CDT
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 70. East wind around 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers after 10pm. Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 75. North northeast wind around 5 mph.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. North northeast wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 70. East wind around 15 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of showers after 10pm. Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 75. North northeast wind around 5 mph.
Saturday Night
A slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56. North northeast wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 56.
Memorial Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 86.
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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:
4:06 pm CDT May 21, 2026
Forecast Valid:
7pm CDT May 21, 2026-6pm CDT May 28, 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