Hazardous Weather Conditions
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 Chill | 53°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
Today
High: 77 °F
Slight Chance
Showers then
Chance
T-storms and
BreezyTonight
Low: 52 °F
T-storms
Likely then
ShowersTuesday

High: 59 °F
Showers
Tuesday Night

Low: 44 °F
Showers
LikelyWednesday

High: 57 °F
Partly Sunny
Wednesday Night

Low: 41 °F
Mostly Cloudy
Thursday

High: 60 °F
Mostly Sunny
Thursday Night

Low: 44 °F
Partly Cloudy
Friday

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.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.86°N 88.94°W (Elev. 682 ft)
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



