Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fog/Mist
80°F
27°C
| Humidity | 97% |
| Wind Speed | E 5 mph |
| Barometer | 29.88 in (1011.1 mb) |
| Dewpoint | 79°F (26°C) |
| Visibility | 4.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 26 Jul 8:54 pm CDT |
Extended Forecast for
2 Miles NNE Decatur Airport IL
Heat Advisory July 26, 09:37pm until July 27, 09:00pm
NOW until 9:00pm Mon

Heat Advisory
Tonight

Low: 75 °F
Partly Cloudy
Monday
High: 92 °F
Slight Chance
T-storms then
SunnyMonday Night

Low: 74 °F
Partly Cloudy
Tuesday

High: 86 °F
Mostly Sunny
Tuesday Night

Low: 63 °F
Mostly Clear
Wednesday

High: 84 °F
Sunny
Wednesday Night

Low: 63 °F
Clear
Thursday

High: 85 °F
Sunny
Detailed Forecast
Tonight
Partly cloudy, with a low around 75. South wind 3 to 5 mph.
Monday
A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 74. South southwest wind 9 to 11 mph becoming north northwest after midnight. Winds could gust as high as 17 mph.
Tuesday
Mostly sunny, with a high near 86. North wind 10 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 63. Northeast wind 5 to 11 mph, with gusts as high as 16 mph.
Wednesday
Sunny, with a high near 84. North northeast wind 6 to 9 mph.
Wednesday Night
Clear, with a low around 63. North northeast wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 66.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 84.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66.
Saturday
A chance of showers. Mostly sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 84.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
2 Miles NNE Decatur Airport IL
39.86°N 88.85°W (Elev. 682 ft)
39.86°N 88.85°W (Elev. 682 ft)
9:08 pm CDT Jul 26, 2026
9pm CDT Jul 26, 2026-6pm CDT Aug 2, 2026



