National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

31°F

-1°C

Humidity 40%
Wind Speed W 10 G 20 mph
Barometer 30.30 in (1026.8 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 22 Jan 11:54 am CST
Extended Forecast for

3 Miles W Decatur IL

Cold Weather Advisory January 23, 03:00am until January 24, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 33. West wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 33 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Wind chill values between -3 and -13. North northwest wind 7 to 17 mph, with gusts as high as 26 mph.

    Low: 0 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 7. Wind chill values between -10 and -20. North wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 7 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 0. Wind chill values between -10 and -15. Northeast wind around 11 mph, with gusts as high as 17 mph.

    Low: 0 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow likely after noon. Cloudy, with a high near 11. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 11 °F

    Cloudy then
    Snow Likely

  • Saturday Night

    Saturday Night: Snow. Low around 8. North northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%.

    Low: 8 °F

    Snow

  • Sunday

    Sunday: A 40 percent chance of snow. Mostly cloudy, with a high near 16. North wind around 10 mph, with gusts as high as 16 mph.

    High: 16 °F

    Chance Snow

  • Sunday Night

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

    Low: -1 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 15.

    High: 15 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 33. West wind 8 to 14 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 0. Wind chill values between -3 and -13. North northwest wind 7 to 17 mph, with gusts as high as 26 mph.
Friday
Mostly sunny and cold, with a high near 7. Wind chill values between -10 and -20. North wind 11 to 17 mph, with gusts as high as 26 mph.
Friday Night
Mostly cloudy, with a low around 0. Wind chill values between -10 and -15. Northeast wind around 11 mph, with gusts as high as 17 mph.
Saturday
Snow likely after noon. Cloudy, with a high near 11. East northeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Snow. Low around 8. North northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 16. North wind around 10 mph, with gusts as high as 16 mph.
Sunday Night
Mostly cloudy, with a low around -1.
Monday
Sunny, with a high near 15.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Mostly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Decatur IL
 39.84°N 89°W (Elev. 600 ft)
Last Update:
12:36 pm CST Jan 22, 2026
Forecast Valid:
12pm CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation