National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

34°F

1°C

Humidity 76%
Wind Speed NW 9 mph
Barometer 30.24 in (1024.5 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 12 Mar 1:54 am CDT
Extended Forecast for

4 Miles NNE Shelbyville IL

  • Overnight

    Overnight: Clear, with a low around 29. Northwest wind 8 to 10 mph, with gusts as high as 17 mph.

    Low: 29 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 49. West wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Breezy, with a south wind 10 to 15 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 41 mph.

    Low: 40 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 54. Breezy, with a west wind 17 to 22 mph, with gusts as high as 40 mph.

    High: 54 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. West northwest wind 5 to 9 mph becoming northeast after midnight. Winds could gust as high as 17 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 55. East southeast wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 55 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, mainly after 1pm. High near 64. Breezy. Chance of precipitation is 80%.

    High: 64 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 21. Blustery. Chance of precipitation is 70%.

    Low: 21 °F

    Rain/Snow
    Likely and
    Blustery

Detailed Forecast

Overnight
Clear, with a low around 29. Northwest wind 8 to 10 mph, with gusts as high as 17 mph.
Thursday
Sunny, with a high near 49. West wind 6 to 10 mph, with gusts as high as 16 mph.
Thursday Night
Mostly cloudy, with a low around 40. Breezy, with a south wind 10 to 15 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 41 mph.
Friday
Partly sunny, with a high near 54. Breezy, with a west wind 17 to 22 mph, with gusts as high as 40 mph.
Friday Night
Mostly cloudy, with a low around 33. West northwest wind 5 to 9 mph becoming northeast after midnight. Winds could gust as high as 17 mph.
Saturday
Mostly cloudy, with a high near 55. East southeast wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 24 mph.
Sunday
Rain, mainly after 1pm. High near 64. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 21. Blustery. Chance of precipitation is 70%.
Monday
Mostly cloudy, with a high near 26. Blustery.
Monday Night
Partly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Mostly cloudy, with a high near 49.
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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:
1:26 am CDT Mar 12, 2026
Forecast Valid:
2am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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