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.

Fair and Breezy

68°F

20°C

Humidity 27%
Wind Speed SW 21 G 26 mph
Barometer 29.79 in (1009.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 27 Feb 4:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: Mostly clear, with a low around 33. Southwest wind 7 to 13 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 56. Northeast wind 7 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. East northeast wind 8 to 17 mph becoming southeast in the evening. Winds could gust as high as 22 mph.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40. Northeast wind around 14 mph, with gusts as high as 21 mph.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 27. East northeast wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 27 °F

    Snow Likely

  • Monday

    Monday: A chance of rain and snow before noon. Mostly cloudy, with a high near 42. East southeast wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 42 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 33. East southeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain. High near 50. Chance of precipitation is 80%.

    High: 50 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Rain Likely
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 33. Southwest wind 7 to 13 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Saturday
Mostly sunny, with a high near 56. Northeast wind 7 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 25. East northeast wind 8 to 17 mph becoming southeast in the evening. Winds could gust as high as 22 mph.
Sunday
Mostly cloudy, with a high near 40. Northeast wind around 14 mph, with gusts as high as 21 mph.
Sunday Night
Snow likely. Cloudy, with a low around 27. East northeast wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Monday
A chance of rain and snow before noon. Mostly cloudy, with a high near 42. East southeast wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 33. East southeast wind around 10 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain. High near 50. Chance of precipitation is 80%.
Tuesday Night
Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 39. Chance of precipitation is 70%.
Wednesday
Rain likely, mainly after noon. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 46.
Thursday
Rain likely. Mostly cloudy, with a high near 61.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 47.
Friday
Rain likely. Cloudy, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
3:37 pm CST Feb 27, 2026
Forecast Valid:
5pm CST Feb 27, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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