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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
65°F
18°C
| Humidity | 78% |
| Wind Speed | E 8 mph |
| Barometer | 30.10 in (1018.8 mb) |
| Dewpoint | 58°F (14°C) |
| Visibility | 10.00 mi |
| Last update | 15 Oct 2:54 am CDT |
Extended Forecast for
2 Miles NW Harristown IL
Overnight
Low: 61 °F
Slight Chance
ShowersThursday
High: 76 °F
Showers
Thursday Night
Low: 46 °F
Breezy.
Showers
Likely then
Chance
ShowersFriday
High: 55 °F
Breezy.
Partly Sunny
then Chance
ShowersFriday Night
Low: 36 °F
Partly Cloudy
Saturday
High: 58 °F
Areas Frost
then SunnySaturday Night
Low: 35 °F
Clear then
Areas FrostSunday
High: 68 °F
Areas Frost
then SunnySunday Night
Low: 38 °F
Mostly Clear
Detailed Forecast
Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 61. East northeast wind around 8 mph.
Thursday
Showers and possibly a thunderstorm. High near 76. East wind 7 to 13 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 1am. Increasing clouds, with a low around 46. Breezy, with a southwest wind 14 to 22 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers after 4pm. Partly sunny, with a high near 55. Breezy, with a northwest wind 21 to 23 mph, with gusts as high as 32 mph.
Friday Night
Partly cloudy, with a low around 36. North wind 11 to 18 mph, with gusts as high as 24 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 58. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night
Areas of frost after 3am. Otherwise, clear, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 76.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles NW Harristown IL
39.85°N 89.08°W (Elev. 653 ft)
39.85°N 89.08°W (Elev. 653 ft)
1:55 am CDT Oct 15, 2026
3am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
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