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

27°F

-3°C

Humidity 69%
Wind Speed W 8 mph
Barometer 30.47 in (1032.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 28 Nov 9:54 am CST
Extended Forecast for

2 Miles SE Mount Zion IL

Winter Storm Warning November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Today

    Today: Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: A 50 percent chance of snow after midnight. Increasing clouds, with a low around 22. Light southeast wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow before 3pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 34. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 34 °F

    Snow then
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Rain and snow before 3am, then a chance of snow. Low around 22. Breezy, with a south southeast wind 17 to 22 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Rain/Snow
    then Chance
    Rain/Snow and
    Breezy

  • Sunday

    Sunday: Mostly cloudy, with a high near 28. Blustery, with a west northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 28 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 10. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.

    Low: 10 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 23. North northeast wind 3 to 5 mph.

    High: 23 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Tonight
A 50 percent chance of snow after midnight. Increasing clouds, with a low around 22. Light southeast wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Saturday
Snow before 3pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 34. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday Night
Rain and snow before 3am, then a chance of snow. Low around 22. Breezy, with a south southeast wind 17 to 22 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
Mostly cloudy, with a high near 28. Blustery, with a west northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 10. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Monday
Mostly cloudy, with a high near 23. North northeast wind 3 to 5 mph.
Monday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Mount Zion IL
 39.75°N 88.86°W (Elev. 709 ft)
Last Update:
8:22 am CST Nov 28, 2025
Forecast Valid:
10am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
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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