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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast and Breezy

30°F

-1°C

Humidity 82%
Wind Speed W 21 G 37 mph
Barometer 29.56 in (1001.1 mb)
Dewpoint 25°F (-4°C)
Visibility 9.00 mi
Wind Chill17°F (-8°C)
Last update 16 Mar 3:54 am CDT
Extended Forecast for

Decatur IL

Wind Advisory March 16, 04:35am until March 16, 10:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 04:35am until March 16, 10:00am

    NOW until 10:00am Mon

    Wind Advisory

  • Overnight

    Low: 29 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Monday

    Monday: A 50 percent chance of snow, mainly before 3pm. Cloudy, with a high near 26. Wind chill values between 4 and 11. Blustery, with a west northwest wind 24 to 26 mph, with gusts as high as 40 mph.

    High: 26 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 31 mph.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Wind chill values between -5 and 5. West northwest wind 7 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely. Mostly cloudy, with a low around 24. South southeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow Likely

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 53. South wind 10 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 53 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. South southwest wind around 6 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow. Patchy blowing snow. Cloudy, with a steady temperature around 29. Blustery, with a west northwest wind around 25 mph, with gusts as high as 37 mph.
Monday
A 50 percent chance of snow, mainly before 3pm. Cloudy, with a high near 26. Wind chill values between 4 and 11. Blustery, with a west northwest wind 24 to 26 mph, with gusts as high as 40 mph.
Monday Night
Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 31 mph.
Tuesday
Partly sunny, with a high near 28. Wind chill values between -5 and 5. West northwest wind 7 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 24. South southeast wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 53. South wind 10 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 35. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.84°N 88.94°W (Elev. 692 ft)
Last Update:
3:17 am CDT Mar 16, 2026
Forecast Valid:
4am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
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Additional Resources

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Chance of Precipitation