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.

Thunderstorm Rain Fog/Mist

58°F

14°C

Humidity 97%
Wind Speed NW 7 mph
Barometer 29.65 in (1003.6 mb)
Dewpoint 57°F (14°C)
Visibility 1.75 mi
Last update 11 Mar 4:51 am CDT
Extended Forecast for

Bement IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 58. West southwest wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 2pm, then a chance of showers. Temperature falling to around 42 by 3pm. Breezy, with a west southwest wind 17 to 24 mph becoming northwest in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F⇓

    Breezy.
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 28. Blustery, with a northwest wind 18 to 23 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.

    Low: 28 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 49. West wind 7 to 16 mph, with gusts as high as 21 mph.

    High: 49 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. Breezy, with a south wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 38 mph.

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 54. Breezy, with a west wind 22 to 26 mph, with gusts as high as 38 mph.

    High: 54 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32. West northwest wind 7 to 11 mph becoming northeast after midnight. Winds could gust as high as 17 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 58. West southwest wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm before 2pm, then a chance of showers. Temperature falling to around 42 by 3pm. Breezy, with a west southwest wind 17 to 24 mph becoming northwest in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 28. Blustery, with a northwest wind 18 to 23 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.
Thursday
Increasing clouds, with a high near 49. West wind 7 to 16 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 41. Breezy, with a south wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 38 mph.
Friday
Partly sunny, with a high near 54. Breezy, with a west wind 22 to 26 mph, with gusts as high as 38 mph.
Friday Night
Mostly cloudy, with a low around 32. West northwest wind 7 to 11 mph becoming northeast after midnight. Winds could gust as high as 17 mph.
Saturday
Mostly cloudy, with a high near 53.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 45. Breezy.
Sunday
Showers. High near 59. Windy. Chance of precipitation is 90%.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 21. Blustery.
Monday
Mostly sunny, with a high near 31. Blustery.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Partly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
Bement IL
 39.92°N 88.56°W (Elev. 676 ft)
Last Update:
5:26 am CDT Mar 11, 2026
Forecast Valid:
5am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation