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.

Fair

43°F

6°C

Humidity 66%
Wind Speed Calm
Barometer 30.36 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 20 Apr 8:38 am CDT
Extended Forecast for

Dalzell IL

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Today

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph.

    Low: 55 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Breezy.

    High: 80 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Chance
    T-storms then
    Showers

Detailed Forecast

Today
Sunny, with a high near 59. Calm wind becoming south around 5 mph in the morning.
Tonight
Partly cloudy, with a low around 46. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 80. Breezy.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. Chance of precipitation is 80%.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 71.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dalzell IL
 41.37°N 89.17°W (Elev. 650 ft)
Last Update:
6:32 am CDT Apr 20, 2026
Forecast Valid:
8am CDT Apr 20, 2026-6pm CDT Apr 26, 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