Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Mostly Cloudy
75°F
24°C
| Humidity | 94% |
| Wind Speed | W 6 mph |
| Barometer | 29.91 in (1012.3 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Last update | 19 Aug 8:54 pm CDT |
Extended Forecast for
Bement IL
Flood Watch August 19, 08:59pm until August 20, 01:00am
NOW until 1:00am Thu
Flood Watch
Tonight
Low: 65 °F
Chance
T-storms then
Slight Chance
T-storms and
Patchy FogThursday
High: 81 °F
Patchy Fog
then SunnyThursday Night

Low: 60 °F
Mostly Clear
Friday

High: 83 °F
Sunny
Friday Night

Low: 63 °F
Chance
T-stormsSaturday

High: 82 °F
Mostly Sunny
Saturday Night

Low: 60 °F
Mostly Clear
Sunday

High: 80 °F
Mostly Sunny
Detailed Forecast
Tonight
A 50 percent chance of showers and thunderstorms, mainly before midnight. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 65. Light and variable wind becoming northeast around 5 mph after midnight.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Northeast wind around 7 mph.
Thursday Night
Mostly clear, with a low around 60. North northeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 83. Calm wind becoming west 5 to 7 mph in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. Southwest wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 82. Northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 60. North northwest wind 3 to 8 mph.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Bement IL
39.92°N 88.56°W (Elev. 676 ft)
39.92°N 88.56°W (Elev. 676 ft)
7:36 pm CDT Aug 19, 2026
8pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026



