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

46°F

8°C

Humidity 79%
Wind Speed SW 12 mph
Barometer 29.85 in (1010.9 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 9 Mar 3:54 am CDT
Extended Forecast for

3 Miles N Shelbyville IL

  • Today

    Today: Sunny, with a high near 72. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 77. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 54. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 54 °F

    T-storms
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 61 by 10am, then falling to around 45 during the remainder of the day. Breezy, with a southwest wind 16 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 61 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Northwest wind 7 to 9 mph becoming southwest in the afternoon.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 57. Breezy.

    High: 57 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 72. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 57. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 77. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 54. South wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 61 by 10am, then falling to around 45 during the remainder of the day. Breezy, with a southwest wind 16 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
Cloudy during the early evening, then gradual clearing, with a low around 30. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 48. Northwest wind 7 to 9 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 40. Breezy.
Friday
Mostly cloudy, with a high near 57. Breezy.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Partly sunny, with a high near 58.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Rain likely. Mostly cloudy, with a high near 63. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Shelbyville IL
 39.46°N 88.82°W (Elev. 686 ft)
Last Update:
4:36 am CDT Mar 9, 2026
Forecast Valid:
4am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation