Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
A Few Clouds
83°F
28°C
| Humidity | 74% |
| Wind Speed | SW 8 mph |
| Barometer | 30.05 in (1016.9 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 90°F (32°C) |
| Last update | 14 Aug 3:54 pm CDT |
Extended Forecast for
Bement IL
Tonight
Low: 73 °F
Mostly Cloudy
then Chance
T-stormsSaturday
High: 92 °F
Showers
Likely then
Chance
ShowersSaturday Night
Low: 74 °F
Partly Cloudy
Sunday
High: 89 °F
Partly Sunny
Sunday Night
Low: 68 °F
Chance
ShowersMonday
High: 84 °F
Mostly Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 85 °F
Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
then Chance
T-storms
Detailed Forecast
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 73. East wind around 7 mph, with gusts as high as 15 mph.
Saturday
Showers and thunderstorms likely before noon, then a chance of showers between noon and 1pm. Mostly cloudy, with a high near 92. Heat index values as high as 108. Southeast wind 7 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 74. Southwest wind around 8 mph.
Sunday
Partly sunny, with a high near 89. Heat index values as high as 100. West northwest wind 8 to 11 mph, with gusts as high as 16 mph.
Sunday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 68. Northwest wind 5 to 9 mph.
Monday
Mostly sunny, with a high near 84. North wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 62. North wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68.
Wednesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 87.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Bement IL
39.92°N 88.56°W (Elev. 676 ft)
39.92°N 88.56°W (Elev. 676 ft)
1:41 pm CDT Aug 14, 2026
4pm CDT Aug 14, 2026-6pm CDT Aug 21, 2026
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