National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

27°F

-3°C

Humidity 72%
Wind Speed SW 13 mph
Barometer 30.28 in (1026.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 12 Jan 6:54 am CST
Extended Forecast for

4 Miles N Forsyth IL

  • Today

    Today: Mostly sunny, with a high near 46. Southwest wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 52. West southwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 52 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. West wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow showers between noon and 3pm, then a chance of snow showers after 3pm. Mostly cloudy, with a temperature falling to around 28 by 5pm. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    High: 39 °F⇓

    Breezy.
    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. Blustery, with a north northwest wind 16 to 22 mph, with gusts as high as 33 mph.

    Low: 15 °F

    Partly Cloudy
    and Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 28. North northwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of snow showers after noon. Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Today
Mostly sunny, with a high near 46. Southwest wind 7 to 13 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 33. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 52. West southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 34. West wind 9 to 15 mph, with gusts as high as 23 mph.
Wednesday
A chance of rain and snow showers between noon and 3pm, then a chance of snow showers after 3pm. Mostly cloudy, with a temperature falling to around 28 by 5pm. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 15. Blustery, with a north northwest wind 16 to 22 mph, with gusts as high as 33 mph.
Thursday
Mostly sunny, with a high near 28. North northwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Thursday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 21.
Friday
A 40 percent chance of snow showers after noon. Mostly cloudy, with a high near 37.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 24.
Saturday Night
Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 21.
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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:
5:52 am CST Jan 12, 2026
Forecast Valid:
7am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation