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.

Fog/Mist

71°F

22°C

Humidity 94%
Wind Speed NE 6 mph
Barometer 29.99 in (1014.8 mb)
Dewpoint 69°F (21°C)
Visibility 6.00 mi
Last update 6 Sep 4:54 am CDT
Extended Forecast for

3 Miles SE Stonington IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 87. East northeast wind 7 to 11 mph, with gusts as high as 16 mph.

    High: 87 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 60. East wind 6 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 85. East wind 6 to 8 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East wind around 6 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. South wind 5 to 8 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. South wind 5 to 13 mph, with gusts as high as 18 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 96. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 87. East northeast wind 7 to 11 mph, with gusts as high as 16 mph.
Tonight
Mostly clear, with a low around 60. East wind 6 to 8 mph.
Labor Day
Sunny, with a high near 85. East wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 62. East wind around 6 mph.
Tuesday
Sunny, with a high near 94. South wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 72. South wind 5 to 13 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny and hot, with a high near 96. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Stonington IL
 39.61°N 89.16°W (Elev. 600 ft)
Last Update:
6:36 am CDT Sep 6, 2026
Forecast Valid:
6am CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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