Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
A Few Clouds
83°F
28°C
| Humidity | 79% |
| Wind Speed | S 8 mph |
| Barometer | 30.05 in (1016.9 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 91°F (33°C) |
| Last update | 15 Aug 3:54 pm CDT |
Extended Forecast for
Mount Zion IL
Tonight
Low: 74 °F
Mostly Cloudy
then 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
Sunny
Tuesday Night
Low: 67 °F
Partly Cloudy
then Chance
ShowersWednesday
High: 82 °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. South wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. West northwest wind 6 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 68. Northwest wind 5 to 9 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 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 67. Calm wind becoming south 5 to 7 mph after midnight.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. 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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ABOUT THIS FORECAST
Point Forecast:
Mount Zion IL
39.77°N 88.89°W (Elev. 650 ft)
39.77°N 88.89°W (Elev. 650 ft)
3:36 pm CDT Aug 15, 2026
4pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026



