Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
1°F
-17°C
| Humidity | 65% |
| Wind Speed | NW 10 mph |
| Barometer | 30.30 in (1027.4 mb) |
| Dewpoint | -8°F (-22°C) |
| Visibility | 10.00 mi |
| Wind Chill | -15°F (-26°C) |
| Last update | 26 Jan 1:54 am CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Cold Weather Advisory January 26, 06:00pm until January 27, 06:00am
Extreme Cold Warning January 26, 02:12am until January 26, 12:00pm
NOW until 12:00pm Mon

Extreme Cold Warning
Overnight

Low: -7 °F
Mostly Clear
Monday

High: 8 °F
Cold
Monday Night

Low: 1 °F⇑
Patchy
Blowing SnowTuesday
High: 21 °F
Patchy
Blowing Snow
then Mostly
SunnyTuesday Night

Low: -5 °F
Mostly Clear
Wednesday

High: 19 °F
Mostly Sunny
Wednesday Night

Low: -3 °F
Partly Cloudy
Thursday

High: 14 °F
Partly Sunny
Detailed Forecast
Overnight
Mostly clear, with a low around -7. Wind chill values between -17 and -25. West northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny and cold, with a high near 8. Wind chill values between -16 and -26. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Monday Night
Patchy blowing snow. Mostly clear, with a temperature rising to around 11 by 5am. Wind chill values between -7 and -17. South southwest wind 9 to 18 mph, with gusts as high as 29 mph.
Tuesday
Patchy blowing snow before noon. Mostly sunny, with a high near 21. Wind chill values between -5 and 5. West northwest wind 10 to 17 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around -5. West northwest wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 19. West southwest wind 6 to 10 mph, with gusts as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around -3. West wind around 7 mph becoming north after midnight.
Thursday
Partly sunny, with a high near 14.
Thursday Night
Partly cloudy, with a low around -4.
Friday
Sunny, with a high near 13.
Friday Night
Mostly clear, with a low around -3.
Saturday
Mostly sunny, with a high near 18.
Saturday Night
Partly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 24.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Forsyth IL
39.89°N 89.02°W (Elev. 656 ft)
39.89°N 89.02°W (Elev. 656 ft)
1:55 am CST Jan 26, 2026
2am CST Jan 26, 2026-6pm CST Feb 1, 2026



