Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

49°F

9°C

Humidity 66%
Wind Speed NW 5 mph
Barometer 29.80 in (1009.0 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 8 Nov 12:54 am CST
Extended Forecast for

Forsyth IL

  • Overnight

    Overnight: Mostly clear, with a low around 39. Northwest wind around 6 mph becoming calm.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Rain likely, mainly after 3pm.  Cloudy, with a high near 58. Calm wind becoming west northwest 5 to 7 mph in the morning.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Mostly Cloudy
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain before 3am, then a chance of rain and snow.  Low around 31. East northeast wind 7 to 12 mph becoming north northwest 13 to 18 mph in the evening. Winds could gust as high as 25 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain then
    Chance
    Rain/Snow

  • Sunday

    Sunday: Partly sunny, with a high near 39. Breezy, with a northwest wind 17 to 23 mph, with gusts as high as 31 mph.

    High: 39 °F

    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. West northwest wind 13 to 17 mph, with gusts as high as 22 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 39. Breezy, with a northwest wind 13 to 20 mph, with gusts as high as 25 mph.

    High: 39 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. West wind 8 to 11 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.

    Low: 23 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 51. Breezy.

    High: 51 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 39. Northwest wind around 6 mph becoming calm.
Saturday
Rain likely, mainly after 3pm. Cloudy, with a high near 58. Calm wind becoming west northwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain before 3am, then a chance of rain and snow. Low around 31. East northeast wind 7 to 12 mph becoming north northwest 13 to 18 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Partly sunny, with a high near 39. Breezy, with a northwest wind 17 to 23 mph, with gusts as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 22. West northwest wind 13 to 17 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 39. Breezy, with a northwest wind 13 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 23. West wind 8 to 11 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.
Veterans Day
Partly sunny, with a high near 51. Breezy.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
12:36 am CST Nov 8, 2025
1am CST Nov 8, 2025-6pm CST Nov 14, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database