Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
57°F
14°C
| Humidity | 90% |
| Wind Speed | SW 3 mph |
| Barometer | 29.93 in (1013.1 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 3 Sep 5:54 am CDT |
Extended Forecast for
Harristown IL
Today
High: 83 °F
Mostly Sunny
then Chance
ShowersTonight
Low: 51 °F
Showers
Likely then
Chance
ShowersThursday
High: 72 °F
Sunny
Thursday Night
Low: 57 °F
Mostly Clear
Friday
High: 71 °F
Partly Sunny
Friday Night
Low: 46 °F
Partly Cloudy
Saturday
High: 73 °F
Sunny
Saturday Night
Low: 47 °F
Mostly Clear
Sunday
High: 74 °F
Sunny
Detailed Forecast
Today
A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 83. Light southwest wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Tonight
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 51. North northwest wind 7 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny, with a high near 72. North northwest wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 57. South wind 5 to 14 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 71. West northwest wind around 14 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 46. West northwest wind 5 to 8 mph becoming calm after midnight.
Saturday
Sunny, with a high near 73. Light west southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 16 mph.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 49.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Harristown IL
39.84°N 89.06°W (Elev. 699 ft)
39.84°N 89.06°W (Elev. 699 ft)
5:10 am CDT Sep 3, 2025
6am CDT Sep 3, 2025-6pm CDT Sep 9, 2025
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