Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Mostly Cloudy
47°F
8°C
| Humidity | 41% |
| Wind Speed | E 13 mph |
| Barometer | 30.36 in (1028.4 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 7 Apr 5:54 pm CDT |
Extended Forecast for
2 Miles ENE Harristown IL
Tonight
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: 54 °F
Mostly Cloudy
then Chance
ShowersFriday
High: 65 °F
Showers
LikelyFriday Night
Low: 44 °F
Mostly Cloudy
Saturday
High: 68 °F
Partly Sunny
Saturday Night
Low: 57 °F
Mostly Cloudy
Detailed Forecast
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 30 mph.
Wednesday Night
Partly cloudy, with a low around 53. South southwest wind around 17 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 74. Southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 54. South wind 10 to 15 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 65. Southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Mostly cloudy, with a low around 44. East northeast wind 7 to 9 mph, with gusts as high as 15 mph.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 79. Breezy.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63. Breezy.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 81. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Breezy.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. Breezy.
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)
4:36 pm CDT Apr 7, 2026
6pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026
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