Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Mostly Cloudy
72°F
22°C
| Humidity | 66% |
| Wind Speed | N 10 mph |
| Barometer | 30.07 in (1017.8 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 24 May 12:54 pm CDT |
Extended Forecast for
3 Miles WSW Forsyth IL
This Afternoon
High: 78 °F
Sunny
Tonight
Low: 57 °F
Mostly Clear
then Patchy
FogMemorial Day
High: 81 °F
Patchy Fog
then SunnyMonday Night
Low: 60 °F
Partly Cloudy
Tuesday
High: 81 °F
Partly Sunny
Tuesday Night
Low: 65 °F
Chance
T-storms then
Showers
LikelyWednesday
High: 82 °F
Showers
LikelyWednesday Night
Low: 64 °F
Chance
T-stormsThursday
High: 83 °F
Partly Sunny
then Chance
T-storms
Detailed Forecast
This Afternoon
Sunny, with a high near 78. North wind 5 to 8 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 57. Northeast wind around 5 mph becoming calm in the evening.
Memorial Day
Patchy fog before 10am. Otherwise, sunny, with a high near 81. Light east wind becoming east southeast 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 60. East southeast wind 5 to 7 mph.
Tuesday
Partly sunny, with a high near 81. East wind 7 to 9 mph.
Tuesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. East southeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.
Thursday Night
Mostly cloudy, with a low around 62.
Friday
Partly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Forsyth IL
39.89°N 89.02°W (Elev. 656 ft)
39.89°N 89.02°W (Elev. 656 ft)
11:31 am CDT May 24, 2026
1pm CDT May 24, 2026-6pm CDT May 30, 2026
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