Additional Severe Weather Concerns for the Center of the Nation; Heat Builds for the West; Critical Fire Weather for Alaska

Active hazardous weather continues for the center of the nation with more severe thunderstorms and heavy rainfall today. Heat will linger across the southern Plains, then expand westward early in the week. The combination of heat and dry conditions will fuel fire weather concerns for the Four Corners region and across interior Alaska. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

63°F

17°C

Humidity 94%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 5:43 am CDT
Extended Forecast for

Peru IL

Flood Warning June 21, 06:09am until June 25, 07:00am
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning June 21, 06:09am until June 25, 07:00am

    NOW until 7:00am Thu

    Flood Warning

  • Today

    High: 69 °F

    Showers
    Likely then
    Heavy Rain

  • Tonight

    Tonight: Showers, mainly before 11pm.  Low around 58. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Showers and
    Breezy then
    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 7am.  Partly sunny, with a high near 76. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 76 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Northeast wind 5 to 10 mph becoming light  after midnight.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. North northeast wind around 5 mph becoming calm.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Today
Showers, with thunderstorms also possible after 1pm. Some of the storms could produce heavy rainfall. High near 69. Light east wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Tonight
Showers, mainly before 11pm. Low around 58. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A 10 percent chance of showers before 7am. Partly sunny, with a high near 76. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 52. Northeast wind 5 to 10 mph becoming light after midnight.
Tuesday
Sunny, with a high near 77. North northeast wind around 5 mph becoming calm.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 80.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IL
 41.34°N 89.11°W
4:56 am CDT Jun 21, 2026
6am CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
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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