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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

56°F

13°C

Humidity 60%
Wind Speed NW 13 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 16 Oct 1:54 pm CDT
Extended Forecast for

Blue Mound IL

  • This Afternoon

    This Afternoon: Scattered showers, mainly after 3pm. Cloudy, with a high near 54. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    High: 54 °F

    Scattered
    Showers and
    Breezy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 36. North wind 10 to 16 mph, with gusts as high as 24 mph.

    Low: 36 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, sunny, with a high near 59. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 59 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 3am. Otherwise, clear, with a low around 34. Light and variable wind.

    Low: 34 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 66. South wind 5 to 8 mph.

    High: 66 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36. South southeast wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. Light southeast wind.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers, mainly after 3pm. Cloudy, with a high near 54. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 36. North wind 10 to 16 mph, with gusts as high as 24 mph.
Saturday
Areas of frost before 9am. Otherwise, sunny, with a high near 59. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night
Areas of frost after 3am. Otherwise, clear, with a low around 34. Light and variable wind.
Sunday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 66. South wind 5 to 8 mph.
Sunday Night
Clear, with a low around 36. South southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 73. Light southeast wind.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Clear, with a low around 44.
Thursday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Blue Mound IL
 39.69°N 89.12°W (Elev. 614 ft)
Last Update:
1:26 pm CDT Oct 16, 2026
Forecast Valid:
2pm CDT Oct 16, 2026-6pm CDT Oct 22, 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