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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

19°F

-7°C

Humidity 81%
Wind Speed S 3 mph
Barometer 30.22 in (1024.7 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 8 Dec 7:54 pm CST
Extended Forecast for

2 Miles SE Mount Zion IL

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 25 by 4am. South wind 6 to 15 mph, with gusts as high as 24 mph.

    Low: 16 °F⇑

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 35. Breezy, with a south southwest wind 16 to 25 mph, with gusts as high as 38 mph.

    Low: 35 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Scattered rain showers before 9am, then scattered snow showers between 9am and noon. Mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a northwest wind 24 to 29 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 30%.

    High: 40 °F⇓

    Breezy.
    Scattered
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. West northwest wind 7 to 14 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of snow. Mostly cloudy, with a high near 31. West wind around 8 mph.

    High: 31 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 20. North wind 7 to 11 mph, with gusts as high as 16 mph.

    Low: 20 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 25 by 4am. South wind 6 to 15 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 41. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35. Breezy, with a south southwest wind 16 to 25 mph, with gusts as high as 38 mph.
Wednesday
Scattered rain showers before 9am, then scattered snow showers between 9am and noon. Mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a northwest wind 24 to 29 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 21. West northwest wind 7 to 14 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of snow. Mostly cloudy, with a high near 31. West wind around 8 mph.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20. North wind 7 to 11 mph, with gusts as high as 16 mph.
Friday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 27.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Mostly cloudy, with a high near 15.
Saturday Night
Mostly cloudy, with a low around 4.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 30.
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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:
7:26 pm CST Dec 8, 2025
Forecast Valid:
8pm CST Dec 8, 2025-6pm CST Dec 15, 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