Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
7°F
-14°C
| Humidity | 66% |
| Wind Speed | SW 15 mph |
| Barometer | 30.36 in (1029.9 mb) |
| Dewpoint | -2°F (-19°C) |
| Visibility | 10.00 mi |
| Wind Chill | -10°F (-23°C) |
| Last update | 26 Jan 3:54 pm CST |
Extended Forecast for
Decatur IL
Cold Weather Advisory January 26, 06:00pm until January 27, 06:00am
Tonight

Low: 4 °F⇑
Patchy
Blowing SnowTuesday
High: 20 °F
Patchy
Blowing Snow
then Mostly
SunnyTuesday Night

Low: -7 °F
Mostly Clear
Wednesday

High: 21 °F
Mostly Sunny
Wednesday Night

Low: -1 °F
Partly Cloudy
Thursday

High: 13 °F
Partly Sunny
Thursday Night

Low: -4 °F
Partly Cloudy
Friday

High: 12 °F
Mostly Sunny
Friday Night

Low: -1 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy blowing snow. Mostly clear, with a temperature rising to around 12 by 5am. Wind chill values between -5 and -13. South southwest wind 9 to 16 mph, with gusts as high as 26 mph.
Tuesday
Patchy blowing snow before noon. Mostly sunny, with a high near 20. Wind chill values between -3 and 6. West northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around -7. Wind chill values between -13 and -18. West northwest wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 21. Wind chill values between -7 and -17. West southwest wind 5 to 9 mph, with gusts as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around -1. West wind around 6 mph becoming north after midnight.
Thursday
Partly sunny, with a high near 13. North wind around 6 mph.
Thursday Night
Partly cloudy, with a low around -4. North northwest wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 12.
Friday Night
Mostly clear, with a low around -1.
Saturday
Mostly sunny, with a high near 17.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 22.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Partly sunny, with a high near 29.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
3:36 pm CST Jan 26, 2026
4pm CST Jan 26, 2026-6pm CST Feb 2, 2026



