Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog

53°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in (1017.7 mb)
Dewpoint 53°F (12°C)
Visibility 0.25 mi
Last update 24 Dec 8:54 pm CST
Extended Forecast for

5 Miles ESE Moweaqua IL

Dense Fog Advisory until December 25, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 25, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 49 °F

    Chance
    Drizzle and
    Dense Fog

  • Christmas Day

    Christmas Day: Areas of dense fog before 11am.  Otherwise, cloudy, with a high near 53. North wind 5 to 8 mph becoming east in the afternoon.

    High: 53 °F

    Areas Dense
    Fog then
    Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after midnight.  Mostly cloudy, with a low around 51. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 16 mph.

    Low: 51 °F

    Cloudy then
    Slight Chance
    Rain

  • Friday

    Friday: Mostly sunny, with a high near 65. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 59. Southeast wind 5 to 9 mph, with gusts as high as 15 mph.

    High: 59 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 17 mph.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of rain.  Cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of drizzle, mainly before midnight. Widespread dense fog, mainly after 11pm. Otherwise, cloudy, with a low around 49. South southwest wind around 6 mph becoming north after midnight.
Christmas Day
Areas of dense fog before 11am. Otherwise, cloudy, with a high near 53. North wind 5 to 8 mph becoming east in the afternoon.
Thursday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 51. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 16 mph.
Friday
Mostly sunny, with a high near 65. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 42. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 59. Southeast wind 5 to 9 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 50. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 17 mph.
Sunday
A 50 percent chance of rain. Cloudy, with a high near 57.
Sunday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 16. Blustery.
Monday
Sunny, with a high near 23. Blustery.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 33.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Moweaqua IL
 39.6°N 88.93°W (Elev. 659 ft)
8:36 pm CST Dec 24, 2025
9pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
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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