Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
36°F
2°C
| Humidity | 62% |
| Wind Speed | E 13 mph |
| Barometer | 30.48 in (1032.7 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 27°F (-3°C) |
| Last update | 7 Apr 11:54 am CDT |
Extended Forecast for
2 Miles ENE Harristown IL
This Afternoon

High: 48 °F
Decreasing
CloudsTonight

Low: 38 °F
Chance
SprinklesWednesday
High: 69 °F
Partly Sunny
then Mostly
Sunny and
BreezyWednesday Night

Low: 53 °F
Partly Cloudy
Thursday

High: 74 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Mostly Cloudy
then Chance
ShowersFriday

High: 67 °F
Showers
LikelyFriday Night

Low: 47 °F
Chance
ShowersSaturday

High: 68 °F
Chance
Showers
Detailed Forecast
This Afternoon
Cloudy, then gradually becoming mostly sunny, with a high near 48. East wind around 11 mph, with gusts as high as 16 mph.
Tonight
A chance of sprinkles between 10pm and midnight. Mostly cloudy, with a low around 38. East wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 69. Breezy, with a south wind 13 to 21 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 17 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 74. South southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 55. South wind 9 to 13 mph, with gusts as high as 20 mph.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 67. South southwest wind 9 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 47.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Mostly cloudy, with a high near 78. Breezy.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63.
Monday
A chance of showers. Partly sunny, with a high near 81. Breezy.
Additional Forecasts and Information
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ABOUT 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)
12:31 pm CDT Apr 7, 2026
12pm CDT Apr 7, 2026-6pm CDT Apr 13, 2026


