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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
92°F
33°C
Humidity | 60% |
Wind Speed | S 12 mph |
Barometer | 30.01 in (1015.5 mb) |
Dewpoint | 76°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 105°F (41°C) |
Last update | 18 Aug 3:54 pm CDT |
Extended Forecast for
4 Miles NNE Shelbyville IL
Heat Advisory August 18, 04:43pm until August 18, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
Tonight
Low: 71 °F
Mostly Clear
then Slight
Chance
T-stormsTuesday
High: 90 °F
Chance
T-stormsTuesday Night
Low: 70 °F
Chance
T-stormsWednesday
High: 84 °F
Mostly Sunny
Wednesday Night
Low: 64 °F
Partly Cloudy
Thursday
High: 85 °F
Mostly Sunny
Thursday Night
Low: 63 °F
Mostly Clear
Friday
High: 85 °F
Sunny
Detailed Forecast
Tonight
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 71. South southeast wind 6 to 8 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South southwest wind around 8 mph becoming west northwest in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly between 7pm and 1am. Partly cloudy, with a low around 70. Calm wind.
Wednesday
Mostly sunny, with a high near 84. North northeast wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 64. North northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 85. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 77.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles NNE Shelbyville IL
39.46°N 88.79°W (Elev. 653 ft)
39.46°N 88.79°W (Elev. 653 ft)
4:25 pm CDT Aug 18, 2025
4pm CDT Aug 18, 2025-6pm CDT Aug 25, 2025