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.

Fog/Mist

39°F

4°C

Humidity 99%
Wind Speed SE 5 mph
Barometer 29.99 in
Dewpoint 39°F (4°C)
Visibility 2.50 mi
Wind Chill35°F (2°C)
Last update 27 Dec 4:55 am CST
Extended Forecast for

Peru IL

  • Today

    Today: Areas of fog before noon. Otherwise, cloudy, with a high near 46. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 46 °F

    Areas Fog
    then Cloudy

  • Tonight

    Tonight: A 50 percent chance of showers, mainly after midnight. Patchy fog. Otherwise, cloudy, with a temperature rising to around 51 by midnight. South southeast wind 5 to 10 mph.

    Low: 45 °F⇑

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Patchy fog before noon. High near 60. Breezy, with a south southeast wind 5 to 10 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 60 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before midnight, then a slight chance of snow showers. Mostly cloudy, with a low around 15. Wind chill values as low as -4. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 50%.

    Low: 15 °F

    Windy. Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Monday

    Monday: A 20 percent chance of snow showers before noon. Mostly cloudy, with a high near 22. Very windy, with a west northwest wind 25 to 35 mph, with gusts as high as 50 mph.

    High: 22 °F

    Slight Chance
    Snow Showers
    and Very
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. Blustery.

    Low: 12 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

Detailed Forecast

Today
Areas of fog before noon. Otherwise, cloudy, with a high near 46. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
A 50 percent chance of showers, mainly after midnight. Patchy fog. Otherwise, cloudy, with a temperature rising to around 51 by midnight. South southeast wind 5 to 10 mph.
Sunday
Showers and possibly a thunderstorm. Patchy fog before noon. High near 60. Breezy, with a south southeast wind 5 to 10 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
A chance of rain and snow showers before midnight, then a slight chance of snow showers. Mostly cloudy, with a low around 15. Wind chill values as low as -4. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 50%.
Monday
A 20 percent chance of snow showers before noon. Mostly cloudy, with a high near 22. Very windy, with a west northwest wind 25 to 35 mph, with gusts as high as 50 mph.
Monday Night
Partly cloudy, with a low around 12. Blustery.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 12.
New Year's Day
Mostly sunny, with a high near 19.
Thursday Night
Mostly clear, with a low around 6.
Friday
Sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.32°N 89.12°W
Last Update:
4:51 am CST Dec 27, 2025
Forecast Valid:
5am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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Additional Resources

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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