Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Light Snow Fog/Mist

24°F

-4°C

Humidity 96%
Wind Speed Calm
Barometer 30.13 in (1021.3 mb)
Dewpoint 23°F (-5°C)
Visibility 1.50 mi
Last update 1 Dec 5:54 pm CST
Extended Forecast for

3 Miles W Arthur IL

Winter Weather Advisory until December 2, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 2, 06:00am

    NOW until 6:00am Tue

    Winter Weather Advisory

  • Tonight

    Low: 16 °F

    Snow then
    Snow Likely

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 23. Northwest wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 23 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 14. Wind chill values between 5 and 10. South wind 5 to 9 mph.

    Low: 14 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 33. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 33 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 4. West wind 6 to 11 mph becoming north northwest in the evening. Winds could gust as high as 16 mph.

    Low: 4 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 13. North northwest wind 5 to 10 mph becoming light north  in the afternoon. Winds could gust as high as 16 mph.

    High: 13 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -2. Calm wind becoming south around 5 mph after midnight.

    Low: -2 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

Tonight
Snow, mainly before 1am. Low around 16. Calm wind becoming northwest 5 to 8 mph after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Tuesday
Mostly cloudy, with a high near 23. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 14. Wind chill values between 5 and 10. South wind 5 to 9 mph.
Wednesday
Partly sunny, with a high near 33. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 4. West wind 6 to 11 mph becoming north northwest in the evening. Winds could gust as high as 16 mph.
Thursday
Sunny, with a high near 13. North northwest wind 5 to 10 mph becoming light north in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Partly cloudy, with a low around -2. Calm wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly cloudy, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Partly sunny, with a high near 29.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Arthur IL
 39.72°N 88.52°W (Elev. 682 ft)
4:46 pm CST Dec 1, 2025
6pm CST Dec 1, 2025-6pm CST Dec 8, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database