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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

69°F

21°C

Humidity 68%
Wind Speed Calm
Barometer 29.98 in (1014.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 20 Jun 10:54 pm CDT
Extended Forecast for

6 Miles NNW Shelbyville IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East wind 3 to 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms, mainly after 11am. High near 78. East southeast wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 78 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 1am, then a chance of showers. Low around 61. South wind 9 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, with a high near 73. North wind around 11 mph, with gusts as high as 18 mph.

    High: 73 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. North northeast wind 5 to 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 76. North northeast wind 3 to 5 mph.

    High: 76 °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.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. East wind 3 to 5 mph.
Sunday
Showers and thunderstorms, mainly after 11am. High near 78. East southeast wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
Showers and thunderstorms before 1am, then a chance of showers. Low around 61. South wind 9 to 14 mph becoming west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Mostly cloudy, with a high near 73. North wind around 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 55. North northeast wind 5 to 8 mph.
Tuesday
Sunny, with a high near 76. 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.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Saturday
A chance of showers. Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Shelbyville IL
 39.49°N 88.88°W (Elev. 676 ft)
Last Update:
8:11 pm CDT Jun 20, 2026
Forecast Valid:
11pm CDT Jun 20, 2026-6pm CDT Jun 27, 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