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.

Fog/Mist

56°F

13°C

Humidity 100%
Wind Speed N 3 mph
Barometer 30.14 in (1020.3 mb)
Dewpoint 56°F (13°C)
Visibility 6.00 mi
Last update 28 Sep 8:54 am CDT
Extended Forecast for

Dalton City IL

Dense Fog Advisory September 28, 09:08am until September 28, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory September 28, 09:08am until September 28, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Today

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 51. North northeast wind around 5 mph becoming light and variable after midnight.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. South southeast wind 3 to 7 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60. Southeast wind 3 to 7 mph.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. South wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. South wind 8 to 13 mph, with gusts as high as 17 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 81. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 78. Northeast wind around 6 mph.
Tonight
Clear, with a low around 51. North northeast wind around 5 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 82. South southeast wind 3 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 60. Southeast wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 86. South wind 8 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 67. South wind 8 to 13 mph, with gusts as high as 17 mph.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 81. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 70.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 55.
Saturday
A chance of showers. Mostly sunny, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
A chance of showers. Mostly sunny, with a high near 70.
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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:
6:36 am CDT Sep 28, 2026
Forecast Valid:
9am CDT Sep 28, 2026-6pm CDT Oct 4, 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