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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

70°F

21°C

Humidity 93%
Wind Speed SE 3 mph
Barometer 29.71 in (1005.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 21 Jun 8:54 pm CDT
Extended Forecast for

4 Miles NNE Shelbyville IL

Flood Watch June 21, 09:22pm until June 22, 01:00am
Tornado Watch June 21, 09:22pm until June 21, 10:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch June 21, 09:22pm until June 22, 01:00am
    Tornado Watch June 21, 09:22pm until June 21, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 62 °F

    Chance
    T-storms then
    Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 72. North wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 54. North northeast wind 5 to 8 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 77. North northeast wind 3 to 5 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Light and variable wind.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Light and variable wind becoming south southwest around 6 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63. Light southwest wind.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms before midnight. Cloudy, with a low around 62. South southwest wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 17 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 72. North wind 11 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 54. North northeast wind 5 to 8 mph.
Tuesday
Sunny, with a high near 77. North northeast wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 57. Light and variable wind.
Wednesday
Mostly sunny, with a high near 79. Light and variable wind becoming south southwest around 6 mph in the morning.
Wednesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63. Light southwest wind.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 60.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Shelbyville IL
 39.46°N 88.79°W (Elev. 653 ft)
Last Update:
8:46 pm CDT Jun 21, 2026
Forecast Valid:
9pm CDT Jun 21, 2026-6pm CDT Jun 28, 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