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.

Mostly Cloudy

46°F

8°C

Humidity 36%
Wind Speed SE 13 mph
Barometer 30.34 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 24 Mar 11:40 am CDT
Extended Forecast for

Peru IL

  • Today

    Today: Mostly cloudy, with a high near 56. South wind around 10 mph, with gusts as high as 15 mph.

    High: 56 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. Southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. South wind around 10 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of rain showers before 4am, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.

    Low: 33 °F

    Chance
    T-storms then
    Chance
    Rain/Snow

  • Friday

    Friday: A 10 percent chance of snow showers before 7am. Mostly sunny, with a high near 47.

    High: 47 °F

    Slight Chance
    Snow Showers
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 56. South wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly cloudy, with a low around 39. Southeast wind around 5 mph, with gusts as high as 10 mph.
Wednesday
Partly sunny, with a high near 70. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 55. South wind around 10 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 80. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Thursday Night
A chance of rain showers before 4am, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Friday
A 10 percent chance of snow showers before 7am. Mostly sunny, with a high near 47.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.12°W
Last Update:
10:36 am CDT Mar 24, 2026
Forecast Valid:
11am CDT Mar 24, 2026-6pm CDT Mar 30, 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