Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog/Mist

80°F

27°C

Humidity 97%
Wind Speed E 5 mph
Barometer 29.88 in (1011.1 mb)
Dewpoint 79°F (26°C)
Visibility 4.00 mi
Heat Index87°F (31°C)
Last update 26 Jul 8:54 pm CDT
Extended Forecast for

2 Miles NNE Decatur Airport IL

Heat Advisory July 26, 09:37pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 09:37pm until July 27, 09:00pm

    NOW until 9:00pm Mon

    Heat Advisory

  • Tonight

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 11am.  Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 92 °F

    Slight Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. South southwest wind 9 to 11 mph becoming north northwest after midnight. Winds could gust as high as 17 mph.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. North wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Northeast wind 5 to 11 mph, with gusts as high as 16 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. North northeast wind 6 to 9 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63. North northeast wind 5 to 8 mph becoming calm  in the evening.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 75. South wind 3 to 5 mph.
Monday
A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 74. South southwest wind 9 to 11 mph becoming north northwest after midnight. Winds could gust as high as 17 mph.
Tuesday
Mostly sunny, with a high near 86. North wind 10 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 63. Northeast wind 5 to 11 mph, with gusts as high as 16 mph.
Wednesday
Sunny, with a high near 84. North northeast wind 6 to 9 mph.
Wednesday Night
Clear, with a low around 63. North northeast wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 66.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 84.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66.
Saturday
A chance of showers. Mostly sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Decatur Airport IL
 39.86°N 88.85°W (Elev. 682 ft)
9:08 pm CDT Jul 26, 2026
9pm CDT Jul 26, 2026-6pm CDT Aug 2, 2026
 
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Additional Resources

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