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

38°F

3°C

Humidity 73%
Wind Speed SW 6 mph
Barometer 30.31 in (1026.7 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 3 Nov 9:54 pm CST
Extended Forecast for

2 Miles NNE Decatur Airport IL

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. South wind 15 to 17 mph, with gusts as high as 30 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68. Southwest wind 11 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35. North northwest wind 5 to 9 mph becoming light and variable.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 62. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely after midnight. Mostly cloudy, with a low around 50. South wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday

    Friday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 66.

    High: 66 °F

    Chance Rain
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. Light and variable wind.
Tuesday
Mostly sunny, with a high near 66. South wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 50. South wind 15 to 17 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 68. Southwest wind 11 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 35. North northwest wind 5 to 9 mph becoming light and variable.
Thursday
Mostly sunny, with a high near 62. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Rain likely after midnight. Mostly cloudy, with a low around 50. South wind 16 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 27.
Monday
Sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Decatur Airport IL
 39.86°N 88.85°W (Elev. 682 ft)
Last Update:
9:31 pm CST Nov 3, 2025
Forecast Valid:
10pm CST Nov 3, 2025-6pm CST Nov 10, 2025
 
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Additional Resources

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Chance of Precipitation