Heavy Rainfall in the Southern Plains, Carolinas and Florida; Heat in the West and Northeast
Heavy to excessive rainfall over parts of the southern Plains, Florida Panhandle, and coastal Carolinas may bring areas of flooding today. Hot to extremely hot temperatures are in place through early this week across much of the western U.S. and northern New England. Read More >
Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
86°F
30°C
| Humidity | 65% |
| Wind Speed | SW 13 mph |
| Barometer | 30.10 in (1018.5 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 93°F (34°C) |
| Last update | 11 Aug 10:54 am CDT |
Extended Forecast for
Decatur IL
Today
High: 88 °F
Slight Chance
T-stormsTonight
Low: 71 °F
Slight Chance
T-stormsTuesday
High: 88 °F
Chance
T-storms then
Showers
LikelyTuesday Night
Low: 70 °F
Mostly Cloudy
Wednesday
High: 85 °F
Mostly Sunny
Wednesday Night
Low: 65 °F
Mostly Clear
Thursday
High: 86 °F
Sunny
Thursday Night
Low: 68 °F
Mostly Clear
Friday
High: 90 °F
Sunny
Detailed Forecast
Today
A slight chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. South southwest wind around 8 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind 3 to 7 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. Southwest wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly cloudy, with a low around 70. West wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 85. Calm wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 65. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 86. Light east wind.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Mostly sunny, with a high near 91.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.86°N 88.94°W (Elev. 682 ft)
39.86°N 88.94°W (Elev. 682 ft)
10:56 am CDT Aug 11, 2025
11am CDT Aug 11, 2025-6pm CDT Aug 17, 2025
Additional Resources
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