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.

Overcast

45°F

7°C

Humidity 83%
Wind Speed SE 7 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 9 Jan 6:54 pm CST
Extended Forecast for

3 Miles S Bement IL

  • Tonight

    Tonight: A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 36. Light and variable wind becoming east around 6 mph after midnight.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: Rain likely before 5pm, then a slight chance of snow showers. Cloudy through mid morning, then gradual clearing, with a high near 42. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Rain Likely
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 21. Blustery, with a west northwest wind 14 to 23 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy and
    Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 34. Breezy, with a west northwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 34 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 44. West southwest wind 11 to 16 mph, with gusts as high as 23 mph.

    High: 44 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 36. Light and variable wind becoming east around 6 mph after midnight.
Saturday
Rain likely before 5pm, then a slight chance of snow showers. Cloudy through mid morning, then gradual clearing, with a high near 42. Breezy, with a west northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 21. Blustery, with a west northwest wind 14 to 23 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 34. Breezy, with a west northwest wind 18 to 23 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Mostly clear, with a low around 23. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 44. West southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 31. Southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly cloudy, with a high near 37.
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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 CST Jan 9, 2026
Forecast Valid:
7pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation