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.

Overcast

44°F

7°C

Humidity 69%
Wind Speed NE 5 mph
Barometer 30.08 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 3 Mar 1:15 pm CST
Extended Forecast for

Peru IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 45. Calm wind becoming northeast around 5 mph.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. East northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 50. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 50 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Patchy fog after 9pm. Low around 43. East wind around 5 mph. Chance of precipitation is 80%.

    Low: 43 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    and Patchy
    Fog

  • Thursday

    Thursday: Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 56. Northeast wind around 5 mph becoming west in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before noon, then showers likely. High near 74. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Showers

  • Saturday

    Saturday: A chance of showers before noon. Partly sunny, with a high near 62.

    High: 62 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 45. Calm wind becoming northeast around 5 mph.
Tonight
Mostly cloudy, with a low around 35. East northeast wind around 5 mph, with gusts as high as 10 mph.
Wednesday
A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 50. East wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
A chance of showers before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Patchy fog after 9pm. Low around 43. East wind around 5 mph. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before noon. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 56. Northeast wind around 5 mph becoming west in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 44.
Friday
Showers and possibly a thunderstorm before noon, then showers likely. High near 74. Chance of precipitation is 90%.
Friday Night
Showers likely, then showers and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 52.
Saturday
A chance of showers before noon. Partly sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 69.
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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:
1:36 pm CST Mar 3, 2026
Forecast Valid:
1pm CST Mar 3, 2026-6pm CDT Mar 9, 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