National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

A Few Clouds

83°F

28°C

Humidity 74%
Wind Speed SW 8 mph
Barometer 30.05 in (1016.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 14 Aug 3:54 pm CDT
Extended Forecast for

Tower Hill IL

Heat Advisory August 14, 04:10pm until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 14, 04:10pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Tonight

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 94. Heat index values as high as 107. South southwest wind 5 to 7 mph.

    High: 94 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Southwest wind 3 to 6 mph.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 92. Heat index values as high as 103. West northwest wind 6 to 8 mph.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 68. North northwest wind 3 to 6 mph.

    Low: 68 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 85. North wind 5 to 7 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. East wind 3 to 7 mph. Winds could gust as high as 16 mph.
Saturday
A 20 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 94. Heat index values as high as 107. South southwest wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 92. Heat index values as high as 103. West northwest wind 6 to 8 mph.
Sunday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 68. North northwest wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 85. North wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 63. Light and variable wind.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tower Hill IL
 39.38°N 88.97°W (Elev. 650 ft)
Last Update:
1:41 pm CDT Aug 14, 2026
Forecast Valid:
4pm CDT Aug 14, 2026-6pm CDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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