Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
51°F
11°C
| Humidity | 71% |
| Wind Speed | W 5 mph |
| Barometer | 29.97 in (1015.2 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 49°F (9°C) |
| Last update | 15 Feb 5:54 pm CST |
Extended Forecast for
2 Miles ENE Harristown IL
Tonight
Low: 39 °F
Mostly Clear
then Patchy
FogWashington's Birthday
High: 61 °F
Patchy Fog
then Mostly
SunnyMonday Night
Low: 41 °F
Partly Cloudy
Tuesday
High: 60 °F
Mostly Cloudy
Tuesday Night
Low: 54 °F
Breezy.
Mostly Cloudy
then Chance
RainWednesday
High: 68 °F
Sunny and
BreezyWednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 67 °F
Partly Sunny
then Chance
RainThursday Night
Low: 36 °F
Chance Rain
then Partly
Cloudy
Detailed Forecast
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 39. Southwest wind 3 to 7 mph.
Washington's Birthday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 61. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 16 mph.
Tuesday
Mostly cloudy, with a high near 60. South wind 9 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 54. Breezy, with a south wind 18 to 23 mph, with gusts as high as 33 mph.
Wednesday
Sunny, with a high near 68. Breezy, with a west southwest wind 13 to 22 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 43. West southwest wind 7 to 10 mph becoming east southeast after midnight. Winds could gust as high as 17 mph.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 67.
Thursday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 49.
Friday Night
A chance of rain. Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Mostly sunny, with a high near 41.
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)
6:06 pm CST Feb 15, 2026
6pm CST Feb 15, 2026-6pm CST Feb 22, 2026
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