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.

Overcast

65°F

18°C

Humidity 81%
Wind Speed S 9 mph
Barometer 29.76 in (1007.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Oct 5:54 am CDT
Extended Forecast for

Mount Zion IL

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 76. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Chance
    T-storms then
    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 49. Southwest wind 9 to 18 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 49 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers before 1pm. Cloudy through mid morning, then gradual clearing, with a high near 61. Breezy, with a west northwest wind 20 to 23 mph, with gusts as high as 36 mph.

    High: 61 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 39. West wind 6 to 10 mph, with gusts as high as 16 mph.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 68 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. South wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 23 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59. Breezy, with a west wind 15 to 22 mph, with gusts as high as 31 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 76. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm. Low around 49. Southwest wind 9 to 18 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday
A 50 percent chance of showers before 1pm. Cloudy through mid morning, then gradual clearing, with a high near 61. Breezy, with a west northwest wind 20 to 23 mph, with gusts as high as 36 mph.
Sunday Night
Clear, with a low around 39. West wind 6 to 10 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 68. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 45. South wind 13 to 17 mph becoming west after midnight. Winds could gust as high as 23 mph.
Tuesday
Sunny, with a high near 59. Breezy, with a west wind 15 to 22 mph, with gusts as high as 31 mph.
Tuesday Night
Clear, with a low around 37.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
A chance of showers. Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 67.
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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:
5:11 am CDT Oct 18, 2025
Forecast Valid:
6am CDT Oct 18, 2025-6pm CDT Oct 24, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation