Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
78°F
26°C
| Humidity | 90% |
| Wind Speed | Calm |
| Barometer | 30.04 in (1016.8 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 15 Aug 10:54 pm CDT |
Extended Forecast for
3 Miles NNE Decatur IL
Tonight
Low: 74 °F
Chance
T-stormsSunday
High: 87 °F
Chance
T-stormsSunday Night
Low: 68 °F
Chance
T-storms then
Partly CloudyMonday
High: 82 °F
Mostly Sunny
Monday Night
Low: 62 °F
Mostly Clear
Tuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 68 °F
Partly Cloudy
then Chance
T-stormsWednesday
High: 81 °F
Chance
Showers then
Chance
T-stormsWednesday Night
Low: 61 °F
Partly Cloudy
Detailed Forecast
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 74. Light and variable wind becoming south southwest around 5 mph after midnight.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 87. West northwest wind 6 to 10 mph, with gusts as high as 15 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 68. Northwest wind 6 to 10 mph.
Monday
Mostly sunny, with a high near 82. North northwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 62. North wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind 3 to 7 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNE Decatur IL
39.88°N 88.91°W (Elev. 673 ft)
39.88°N 88.91°W (Elev. 673 ft)
10:36 pm CDT Aug 15, 2026
10pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026
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