Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

64°F

18°C

Humidity 75%
Wind Speed SW 15 mph
Barometer 29.68 in (1004.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 4 May 11:54 am CDT
Extended Forecast for

Blue Mound IL

Blowing Dust Advisory until May 4, 06:00pm
Click here for hazard details and duration
Blowing Dust Advisory
  •  
    Blowing Dust Advisory until May 4, 06:00pm

    NOW until 6:00pm Mon

    Blowing Dust Advisory

  • This Afternoon

    High: 77 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 4am, then a chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 52. South wind 9 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 59. North northeast wind 9 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 1am.  Mostly cloudy, with a low around 43. North northeast wind 9 to 13 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 56. North wind 8 to 10 mph, with gusts as high as 16 mph.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39. North wind 6 to 8 mph.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62. West wind 5 to 13 mph, with gusts as high as 18 mph.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Patchy blowing dust. Partly sunny, with a high near 77. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 31 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 52. South wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 59. North northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. North northeast wind 9 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Partly sunny, with a high near 56. North wind 8 to 10 mph, with gusts as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around 39. North wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 62. West wind 5 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 45.
Friday
Mostly sunny, with a high near 68.
Friday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
A chance of showers. Partly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Mound IL
 39.69°N 89.12°W (Elev. 614 ft)
12:03 pm CDT May 4, 2026
12pm CDT May 4, 2026-6pm CDT May 10, 2026
 
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Additional Resources

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