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

51°F

11°C

Humidity 96%
Wind Speed NE 8 mph
Barometer 30.09 in (1019.1 mb)
Dewpoint 50°F (10°C)
Visibility 5.00 mi
Wind Chill48°F (9°C)
Last update 25 Dec 10:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Christmas Day

    Christmas Day: A slight chance of drizzle before noon. Cloudy, with a high near 55. East wind around 10 mph, with gusts as high as 15 mph.

    High: 55 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: A chance of drizzle, mainly between 7pm and 3am. Patchy fog. Otherwise, cloudy, with a low around 49. East wind around 10 mph becoming south after midnight. Winds could gust as high as 18 mph.

    Low: 49 °F

    Chance
    Drizzle and
    Patchy Fog

  • Friday

    Friday: Patchy fog before noon. Otherwise, partly sunny, with a high near 63. South wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 63 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 13 mph, with gusts as high as 17 mph.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Southeast wind 10 to 13 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely, mainly after noon. Cloudy, with a high near 61. South southwest wind 10 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 17. Blustery.

    Low: 17 °F

    Blustery.
    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 24. Blustery.

    High: 24 °F

    Sunny and
    Blustery

Detailed Forecast

Christmas Day
A slight chance of drizzle before noon. Cloudy, with a high near 55. East wind around 10 mph, with gusts as high as 15 mph.
Tonight
A chance of drizzle, mainly between 7pm and 3am. Patchy fog. Otherwise, cloudy, with a low around 49. East wind around 10 mph becoming south after midnight. Winds could gust as high as 18 mph.
Friday
Patchy fog before noon. Otherwise, partly sunny, with a high near 63. South wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm.
Saturday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 13 mph, with gusts as high as 17 mph.
Saturday Night
Mostly cloudy, with a low around 52. Southeast wind 10 to 13 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Rain likely, mainly after noon. Cloudy, with a high near 61. South southwest wind 10 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 17. Blustery.
Monday
Sunny, with a high near 24. Blustery.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
9:57 am CST Dec 25, 2025
Forecast Valid:
11am CST Dec 25, 2025-6pm CST Dec 31, 2025
 
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