Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
-1°F
-18°C
| Humidity | 48% |
| Wind Speed | N 17 G 24 mph |
| Barometer | 30.66 in (1039.7 mb) |
| Dewpoint | -16°F (-27°C) |
| Visibility | 10.00 mi |
| Wind Chill | -22°F (-30°C) |
| Last update | 23 Jan 8:54 am CST |
Extended Forecast for
2 Miles ENE Harristown IL
Cold Weather Advisory until January 24, 12:00pm
Winter Storm Warning January 24, 09:00am until January 26, 12:00am
NOW until 12:00pm Sat
Cold Weather Advisory
Today
High: 6 °F
Cold
Tonight
Low: -1 °F
Mostly Cloudy
Saturday
High: 10 °F
Slight Chance
Snow then
Snow LikelySaturday Night
Low: 8 °F
Snow
Sunday
High: 14 °F
Snow then
Chance SnowSunday Night
Low: -2 °F
Chance Snow
then Partly
CloudyMonday
High: 12 °F
Mostly Sunny
Monday Night
Low: 2 °F
Mostly Clear
Detailed Forecast
Today
Partly sunny and cold, with a high near 6. Wind chill values between -12 and -22. North wind 13 to 17 mph, with gusts as high as 24 mph.
Tonight
Mostly cloudy, with a low around -1. Wind chill values between -13 and -18. Northeast wind around 11 mph, with gusts as high as 17 mph.
Saturday
Snow likely, mainly after noon. Cloudy and cold, with a high near 10. Wind chill values between -5 and -15. East northeast wind around 11 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Snow. Low around 8. Wind chill values between -2 and -7. East northeast wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow, mainly before noon. High near 14. North wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 12. West northwest wind around 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 2.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 3.
Wednesday
Partly sunny, with a high near 17.
Wednesday Night
Partly cloudy, with a low around -2.
Thursday
Mostly sunny, with a high near 13.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
8:37 am CST Jan 23, 2026
9am CST Jan 23, 2026-6pm CST Jan 29, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
