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

45°F

7°C

Humidity 56%
Wind Speed NW 6 mph
Barometer 30.20 in (1022.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Nov 2:54 am CST
Extended Forecast for

3 Miles W Decatur IL

  • Overnight

    Overnight: Partly cloudy, with a low around 34. West northwest wind around 5 mph becoming calm.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. South southeast wind around 7 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 71. South southwest wind 6 to 10 mph.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. South southwest wind 7 to 13 mph, with gusts as high as 17 mph.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 74. South southwest wind 14 to 18 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 74 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North northwest wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 34. West northwest wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 44. South southeast wind around 7 mph.
Friday
Mostly sunny, with a high near 71. South southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 56. South southwest wind 7 to 13 mph, with gusts as high as 17 mph.
Saturday
Partly sunny, with a high near 74. South southwest wind 14 to 18 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 38. North northwest wind 10 to 14 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 34.
Monday
Mostly sunny, with a high near 55.
Monday Night
Rain likely. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Decatur IL
 39.84°N 89°W (Elev. 600 ft)
Last Update:
2:35 am CST Nov 13, 2025
Forecast Valid:
3am CST Nov 13, 2025-6pm CST Nov 19, 2025
 
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