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

37°F

3°C

Humidity 70%
Wind Speed S 9 mph
Barometer 29.91 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 9 Feb 9:22 pm CST
Extended Forecast for

Peru IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. West southwest wind 10 to 15 mph becoming north northwest in the morning. Winds could gust as high as 30 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 43 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Cloudy, with a high near 41.

    High: 41 °F

    Cloudy then
    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 47. West southwest wind 10 to 15 mph becoming north northwest in the morning. Winds could gust as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 26. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Partly cloudy, with a low around 27. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Thursday
A 20 percent chance of snow after noon. Cloudy, with a high near 41.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 45.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
A chance of rain after noon. Mostly cloudy, with a high near 45.
Saturday Night
Rain likely. Mostly cloudy, with a low around 32.
Sunday
A chance of rain. Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 29.
Washington's Birthday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.14°W
Last Update:
9:16 pm CST Feb 9, 2026
Forecast Valid:
9pm CST Feb 9, 2026-6pm CST Feb 16, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation