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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

82°F

28°C

Humidity 53%
Wind Speed W 7 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Oct 11:54 am CDT
Extended Forecast for

Mount Zion IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. West southwest wind around 11 mph, with gusts as high as 16 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 69. South southwest wind 5 to 8 mph becoming north northwest after midnight.

    Low: 69 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 76. Light and variable wind becoming north northeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 61. East northeast wind 7 to 9 mph.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 4pm. High near 76. East wind 8 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 48. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 40%.

    Low: 48 °F

    Chance
    T-storms then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 59. Breezy, with a north northwest wind 22 to 25 mph, with gusts as high as 33 mph.

    High: 59 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Areas Frost
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 91. West southwest wind around 11 mph, with gusts as high as 16 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 69. South southwest wind 5 to 8 mph becoming north northwest after midnight.
Wednesday
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 76. Light and variable wind becoming north northeast around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 61. East northeast wind 7 to 9 mph.
Thursday
Showers, with thunderstorms also possible after 4pm. High near 76. East wind 8 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 48. Breezy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 59. Breezy, with a north northwest wind 22 to 25 mph, with gusts as high as 33 mph.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 61.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 73.
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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:
8:36 am CDT Oct 13, 2026
Forecast Valid:
12pm CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation