Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

A Few Clouds

55°F

13°C

Humidity 80%
Wind Speed SW 7 mph
Barometer 29.74 in (1006.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 4 May 3:54 am CDT
Extended Forecast for

Decatur IL

Blowing Dust Advisory May 4, 11:00am until May 4, 06:00pm
Click here for hazard details and duration
Blowing Dust Advisory
  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after 1pm.  Patchy blowing dust after 11am. Mostly sunny, with a high near 77. Breezy, with a southwest wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph.  Chance of precipitation is 30%.

    High: 77 °F

    Slight Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then showers and possibly a thunderstorm between 3am and 4am, then showers likely after 4am.  Low around 52. South southwest wind 9 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    T-storms
    Likely then
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm.  High near 59. Northwest wind 8 to 11 mph becoming north northeast in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely before 1am.  Mostly cloudy, with a low around 44. North northeast wind 7 to 11 mph, with gusts as high as 17 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 57. North northeast wind 6 to 9 mph.

    High: 57 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. North northwest wind around 7 mph.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60. West wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Patchy blowing dust after 11am. Mostly sunny, with a high near 77. Breezy, with a southwest wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms likely before 3am, then showers and possibly a thunderstorm between 3am and 4am, then showers likely after 4am. Low around 52. South southwest wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 59. Northwest wind 8 to 11 mph becoming north northeast in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely before 1am. Mostly cloudy, with a low around 44. North northeast wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Partly sunny, with a high near 57. North northeast wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 41. North northwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 60. West wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 65.
Friday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 45.
Saturday
Sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
A chance of showers. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.86°N 88.94°W (Elev. 682 ft)
3:36 am CDT May 4, 2026
4am CDT May 4, 2026-6pm CDT May 10, 2026
 
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Additional Resources

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