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Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

72°F

22°C

Humidity 44%
Wind Speed N 6 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 7 Oct 7:54 pm CDT
Extended Forecast for

2 Miles NNW Blue Mound IL

  • Tonight

    Tonight: Clear, with a low around 53. North northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 53 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. South wind 6 to 11 mph, with gusts as high as 17 mph.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 61. South southeast wind around 9 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86. South wind 8 to 11 mph, with gusts as high as 16 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 57. East southeast wind 5 to 8 mph.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Sunday Night

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

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 53. North northwest wind 5 to 7 mph becoming calm after midnight.
Thursday
Sunny, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 55. Calm wind becoming east southeast around 5 mph after midnight.
Friday
Sunny, with a high near 85. South wind 6 to 11 mph, with gusts as high as 17 mph.
Friday Night
Clear, with a low around 61. South southeast wind around 9 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 86. South wind 8 to 11 mph, with gusts as high as 16 mph.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57. East southeast wind 5 to 8 mph.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 57.
Columbus Day
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Blue Mound IL
 39.74°N 89.12°W (Elev. 600 ft)
Last Update:
7:36 pm CDT Oct 7, 2026
Forecast Valid:
8pm CDT Oct 7, 2026-6pm CDT Oct 14, 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