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.

Overcast and Breezy

33°F

1°C

Humidity 58%
Wind Speed NW 22 G 35 mph
Barometer 29.81 in (1009.9 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 14 Jan 9:54 am CST
Extended Forecast for

Forsyth IL

  • Today

    Today: A chance of flurries with a slight chance of snow before 11am, then a chance of flurries between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 24 by 5pm. Breezy, with a north northwest wind 20 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    High: 36 °F⇓

    Breezy.
    Slight Chance
    Snow then
    Chance
    Flurries

  • Tonight

    Tonight: Mostly clear, with a low around 15. Wind chill values between 3 and 10. North northwest wind 11 to 17 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 28. Wind chill values between 2 and 12. Northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 28 °F

    Sunny

  • Thursday Night

    Thursday Night: Snow likely. Mostly cloudy, with a temperature rising to around 30 by 5am. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 24 °F⇑

    Snow Likely

  • Friday

    Friday: Mostly cloudy, with a high near 38. Breezy, with a west wind 15 to 21 mph, with gusts as high as 29 mph.

    High: 38 °F

    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 14. West northwest wind 14 to 18 mph, with gusts as high as 23 mph.

    Low: 14 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 20. West northwest wind 14 to 18 mph, with gusts as high as 24 mph.

    High: 20 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny

Detailed Forecast

Today
A chance of flurries with a slight chance of snow before 11am, then a chance of flurries between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 24 by 5pm. Breezy, with a north northwest wind 20 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 15. Wind chill values between 3 and 10. North northwest wind 11 to 17 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 28. Wind chill values between 2 and 12. Northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Snow likely. Mostly cloudy, with a temperature rising to around 30 by 5am. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Mostly cloudy, with a high near 38. Breezy, with a west wind 15 to 21 mph, with gusts as high as 29 mph.
Friday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 14. West northwest wind 14 to 18 mph, with gusts as high as 23 mph.
Saturday
Partly sunny, with a high near 20. West northwest wind 14 to 18 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 20.
Sunday Night
Mostly cloudy, with a low around 10.
M.L.King Day
Partly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 6.
Tuesday
Mostly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
10:11 am CST Jan 14, 2026
Forecast Valid:
10am CST Jan 14, 2026-6pm CST Jan 20, 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