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

59°F

15°C

Humidity 36%
Wind Speed S 9 mph
Barometer 30.22 in (1023.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 20 Apr 5:54 pm CDT
Extended Forecast for

3 Miles S Bement IL

  • Tonight

    Tonight: Increasing clouds, with a low around 47. South wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Breezy, with a southwest wind 13 to 23 mph, with gusts as high as 32 mph.

    High: 77 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58. Southwest wind 14 to 17 mph, with gusts as high as 24 mph.

    Low: 58 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. West southwest wind around 11 mph, with gusts as high as 17 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. South wind around 9 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 80 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am. Partly cloudy, with a low around 61. South wind around 18 mph, with gusts as high as 26 mph.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 47. South wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 77. Breezy, with a southwest wind 13 to 23 mph, with gusts as high as 32 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58. Southwest wind 14 to 17 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 77. West southwest wind around 11 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly clear, with a low around 56. South wind around 9 mph.
Thursday
Mostly sunny, with a high near 80. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.
Thursday Night
A 50 percent chance of showers after 1am. Partly cloudy, with a low around 61. South wind around 18 mph, with gusts as high as 26 mph.
Friday
Showers, with thunderstorms also possible after 1pm. High near 75. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Partly sunny, with a high near 71.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 50.
Monday
A chance of showers. Mostly cloudy, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Bement IL
 39.87°N 88.59°W (Elev. 676 ft)
Last Update:
6:36 pm CDT Apr 20, 2026
Forecast Valid:
6pm CDT Apr 20, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation