Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Mostly Cloudy
60°F
16°C
| Humidity | 84% |
| Wind Speed | SE 16 mph |
| Barometer | 29.51 in (999.4 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 8.00 mi |
| Last update | 19 Feb 12:54 pm CST |
Extended Forecast for
2 Miles ENE Harristown IL
This Afternoon

High: 62 °F
T-storms
LikelyTonight
Low: 35 °F
Slight Chance
T-storms then
Partly Cloudy
and BreezyFriday

High: 44 °F
Decreasing
Clouds and
BreezyFriday Night

Low: 25 °F
Mostly Clear
Saturday

High: 41 °F
Mostly Sunny
Saturday Night

Low: 22 °F
Partly Cloudy
Sunday

High: 34 °F
Partly Sunny
and BreezySunday Night

Low: 18 °F
Mostly Clear
Monday

High: 34 °F
Sunny
Detailed Forecast
This Afternoon
Showers and thunderstorms likely, mainly between 2pm and 3pm. Mostly cloudy, with a high near 62. South southeast wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Breezy, with a south wind 9 to 14 mph becoming west 19 to 24 mph after midnight. Winds could gust as high as 38 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 44. Breezy, with a west wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 37 mph.
Friday Night
Mostly clear, with a low around 25. Northwest wind 6 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 41. West northwest wind 7 to 14 mph, with gusts as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 22. Northwest wind 10 to 16 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 34. Breezy, with a northwest wind 16 to 22 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 54.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
12:26 pm CST Feb 19, 2026
1pm CST Feb 19, 2026-6pm CST Feb 25, 2026



