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

33°F

1°C

Humidity 64%
Wind Speed N 10 mph
Barometer 30.61 in (1037.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 28 Mar 3:54 am CDT
Extended Forecast for

Mount Zion IL

  • Overnight

    Overnight: Clear, with a low around 26. North wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 26 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 51. North northeast wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 17 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 38. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 64. South wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53. South wind around 14 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 77 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Breezy, with a south wind 18 to 21 mph, with gusts as high as 30 mph.

    Low: 62 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Breezy. Chance of precipitation is 60%.

    High: 79 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 43. Breezy. Chance of precipitation is 90%.

    Low: 43 °F

    Rain and
    Breezy

Detailed Forecast

Overnight
Clear, with a low around 26. North wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 51. North northeast wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 17 mph.
Saturday Night
Increasing clouds, with a low around 38. South wind 9 to 13 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 64. South wind 11 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 53. South wind around 14 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 77. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 62. Breezy, with a south wind 18 to 21 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Breezy. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 43. Breezy. Chance of precipitation is 90%.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 54. Breezy.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35.
Thursday
A chance of rain. Mostly cloudy, with a high near 53.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Mostly cloudy, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Zion IL
 39.77°N 88.89°W (Elev. 650 ft)
Last Update:
1:27 am CDT Mar 28, 2026
Forecast Valid:
3am CDT Mar 28, 2026-6pm CDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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