National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast and Breezy

62°F

17°C

Humidity 86%
Wind Speed SW 22 G 36 mph
Barometer 29.52 in (999.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 8 Jan 9:54 pm CST
Extended Forecast for

3 Miles NNE Decatur IL

  • Tonight

    Tonight: A chance of rain and thunderstorms before 3am, then a slight chance of rain between 3am and 5am. Mostly cloudy, with a low around 43. Breezy, with a south southwest wind 21 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.

    Low: 43 °F

    Breezy.
    Chance
    T-storms then
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 49. Breezy, with a west wind 16 to 21 mph becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 49 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35. North wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 42. West northwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 42 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20. Blustery, with a west wind 14 to 20 mph, with gusts as high as 26 mph.

    Low: 20 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 31 °F

    Mostly Sunny
    and Blustery
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22. West wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 16 mph.

    Low: 22 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain and thunderstorms before 3am, then a slight chance of rain between 3am and 5am. Mostly cloudy, with a low around 43. Breezy, with a south southwest wind 21 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.
Friday
Mostly cloudy, with a high near 49. Breezy, with a west wind 16 to 21 mph becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 35. North wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 42. West northwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
Mostly cloudy, with a low around 20. Blustery, with a west wind 14 to 20 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 31. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 22. West wind 6 to 9 mph becoming south southwest after midnight. Winds could gust as high as 16 mph.
Monday
Mostly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Decatur IL
 39.88°N 88.91°W (Elev. 673 ft)
Last Update:
8:38 pm CST Jan 8, 2026
Forecast Valid:
10pm CST Jan 8, 2026-6pm CST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation