


Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
91°F
33°C
Humidity | 56% |
Wind Speed | SW 14 mph |
Barometer | 30.17 in (1021.1 mb) |
Dewpoint | 73°F (23°C) |
Visibility | 10.00 mi |
Heat Index | 100°F (38°C) |
Last update | 23 Jun 11:54 am CDT |
Extended Forecast for
Decatur IL
Heat Advisory June 23, 12:04pm until June 26, 07:00pm
NOW until 7:00pm Thu
Heat Advisory
This Afternoon
High: 95 °F
Hot
Tonight
Low: 76 °F
Mostly Clear
Tuesday
High: 94 °F
Mostly Sunny
then Slight
Chance
T-stormsTuesday Night
Low: 75 °F
Partly Cloudy
Wednesday
High: 92 °F
Mostly Sunny
then Chance
T-stormsWednesday Night
Low: 75 °F
Partly Cloudy
Thursday
High: 93 °F
Sunny then
Chance
T-stormsThursday Night
Low: 74 °F
Mostly Clear
Detailed Forecast
This Afternoon
Mostly sunny and hot, with a high near 95. Heat index values as high as 101. South southwest wind around 13 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 76. South southwest wind 6 to 11 mph, with gusts as high as 16 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 101. Southwest wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. West southwest wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 75. South wind 3 to 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Southwest wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 73.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
11:25 am CDT Jun 23, 2025
12pm CDT Jun 23, 2025-6pm CDT Jun 29, 2025