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

30°F

-1°C

Humidity 64%
Wind Speed SW 14 G 20 mph
Barometer 30.18 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 12 Jan 5:59 am CST
Extended Forecast for

Peru IL

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 44. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 44 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. West wind around 15 mph, with gusts as high as 25 mph.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow showers. Mostly cloudy, with a high near 35. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 35 °F

    Chance Snow
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. Blustery.

    Low: 15 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

  • Friday

    Friday: Scattered snow showers. Mostly cloudy, with a high near 34.

    High: 34 °F

    Scattered
    Snow Showers

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 44. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 33. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 49. West wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 33. West wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 35. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 15. Blustery.
Thursday
Mostly sunny, with a high near 27.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22.
Friday
Scattered snow showers. Mostly cloudy, with a high near 34.
Friday Night
Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 17.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 20.
Saturday Night
Mostly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.12°W
Last Update:
2:31 am CST Jan 12, 2026
Forecast Valid:
6am CST Jan 12, 2026-6pm CST Jan 18, 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