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.

Mostly Cloudy

75°F

24°C

Humidity 54%
Wind Speed NW 9 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Jun 10:54 am CDT
Extended Forecast for

Dalton City IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Sunny, with a high near 80. West northwest wind 6 to 8 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. Northwest wind around 5 mph becoming calm.

    Low: 60 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 75. East southeast wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 75 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 60. South southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 60 °F

    Heavy Rain

  • Monday

    Monday: Partly sunny, with a high near 75. North wind around 14 mph, with gusts as high as 20 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. North northeast wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. North northeast wind around 6 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 80. West northwest wind 6 to 8 mph.
Tonight
Increasing clouds, with a low around 60. Northwest wind around 5 mph becoming calm.
Sunday
Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 75. East southeast wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 60. South southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Monday
Partly sunny, with a high near 75. North wind around 14 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 54. North northeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 77. North northeast wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dalton City IL
 39.7°N 88.81°W (Elev. 682 ft)
Last Update:
8:36 am CDT Jun 20, 2026
Forecast Valid:
11am CDT Jun 20, 2026-6pm CDT Jun 26, 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