Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

57°F

14°C

Humidity 93%
Wind Speed Calm
Barometer 30.11 in (1019.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 8 Sep 2:54 am CDT
Extended Forecast for

3 Miles N Decatur IL

  • Overnight

    Overnight: Mostly clear, with a low around 59. East southeast wind around 5 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92. South wind around 6 mph.

    High: 92 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. South southeast wind 6 to 10 mph, with gusts as high as 17 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers before noon, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 92. West wind 9 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 40%.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, then showers after 1am.  Low around 67. West wind 5 to 7 mph becoming calm  in the evening.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 67 °F

    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers before 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 82. North wind 3 to 8 mph.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind around 6 mph becoming light and variable.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 59. East southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 92. South wind around 6 mph.
Tuesday Night
Partly cloudy, with a low around 71. South southeast wind 6 to 10 mph, with gusts as high as 17 mph.
Wednesday
A chance of showers before noon, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 92. West wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Wednesday Night
Showers and thunderstorms likely, then showers after 1am. Low around 67. West wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 50 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. North wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 57. North wind around 6 mph becoming light and variable.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 63.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 87.
Saturday Night
A chance of showers. Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A chance of showers. Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Decatur IL
 39.88°N 88.94°W (Elev. 673 ft)
3:31 am CDT Sep 8, 2026
3am CDT Sep 8, 2026-6pm CDT Sep 14, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database