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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

25°F

-4°C

Humidity 50%
Wind Speed NW 16 G 29 mph
Barometer 30.22 in (1024.0 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 22 Jan 12:54 am CST
Extended Forecast for

Decatur IL

  • Overnight

    Overnight: Mostly clear, with a low around 19. West northwest wind 7 to 16 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 33. West wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 1. Wind chill values between -4 and -14. West wind 5 to 10 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.

    Low: 1 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 8. Wind chill values between -10 and -18. North wind 11 to 17 mph, with gusts as high as 24 mph.

    High: 8 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. North northeast wind around 10 mph, with gusts as high as 18 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow after noon. Cloudy, with a high near 13. Northeast wind around 10 mph, with gusts as high as 17 mph.

    High: 13 °F

    Cloudy then
    Chance Snow

  • Saturday Night

    Saturday Night: Snow likely. Cloudy, with a low around 7. Northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

    Low: 7 °F

    Snow Likely

  • Sunday

    Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 16.

    High: 16 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 19. West northwest wind 7 to 16 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 33. West wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 1. Wind chill values between -4 and -14. West wind 5 to 10 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.
Friday
Mostly cloudy and cold, with a high near 8. Wind chill values between -10 and -18. North wind 11 to 17 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around -1. North northeast wind around 10 mph, with gusts as high as 18 mph.
Saturday
A 50 percent chance of snow after noon. Cloudy, with a high near 13. Northeast wind around 10 mph, with gusts as high as 17 mph.
Saturday Night
Snow likely. Cloudy, with a low around 7. Northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 16.
Sunday Night
Mostly cloudy, with a low around -1.
Monday
Mostly sunny, with a high near 13.
Monday Night
Mostly clear, with a low around 3.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 23.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.84°N 88.94°W (Elev. 692 ft)
Last Update:
12:36 am CST Jan 22, 2026
Forecast Valid:
1am CST Jan 22, 2026-6pm CST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation