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
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  •  
    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

    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.

    High: 8 °F

    Cold

  • Monday Night

    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.

    Low: 1 °F

    Patchy
    Blowing Snow

  • Tuesday

    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.

    High: 21 °F

    Patchy
    Blowing Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -5. West northwest wind 5 to 8 mph.

    Low: -5 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 19. West southwest wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 19 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -3. West wind around 7 mph becoming north after midnight.

    Low: -3 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 14.

    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.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 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
 
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Additional Resources

Radar & Satellite Image

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