Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
47°F
8°C
| Humidity | 83% |
| Wind Speed | NW 12 mph |
| Barometer | 29.84 in (1010.1 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 42°F (6°C) |
| Last update | 18 Apr 6:54 am CDT |
Extended Forecast for
2 Miles ENE Harristown IL
Today
High: 55 °F
Breezy.
Chance
Showers then
Mostly SunnyTonight
Low: 37 °F
Mostly Clear
then Patchy
FrostSunday
High: 60 °F
Patchy Frost
then Mostly
Sunny and
BreezySunday Night
Low: 34 °F
Mostly Clear
then Patchy
FrostMonday
High: 60 °F
Patchy Frost
then SunnyMonday Night
Low: 48 °F
Mostly Clear
Tuesday
High: 76 °F
Mostly Sunny
then Mostly
Sunny and
BreezyTuesday Night
Low: 56 °F
Partly Cloudy
Wednesday
High: 79 °F
Mostly Sunny
Detailed Forecast
Today
A 40 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 55. Breezy, with a west northwest wind 18 to 20 mph, with gusts as high as 30 mph.
Tonight
Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. West northwest wind 6 to 16 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. Breezy, with a southwest wind 7 to 12 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 14 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. East northeast wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 48. South southeast wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 76. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A chance of showers. Partly cloudy, with a low around 61.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles ENE Harristown IL
39.84°N 89.03°W (Elev. 666 ft)
39.84°N 89.03°W (Elev. 666 ft)
6:36 am CDT Apr 18, 2026
6am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
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