Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Thunderstorm Rain Fog/Mist

52°F

11°C

Humidity 97%
Wind Speed W 16 G 28 mph
Barometer 29.30 in (992.0 mb)
Dewpoint 51°F (11°C)
Visibility 2.50 mi
Wind Chill47°F (8°C)
Last update 15 Mar 6:54 pm CDT
Extended Forecast for

Forsyth IL

Tornado Watch March 15, 07:28pm until March 15, 10:00pm
Wind Advisory March 15, 07:28pm until March 16, 10:00am
Click here for hazard details and duration
...
Wind Advisory
  •  
    Tornado Watch March 15, 07:28pm until March 15, 10:00pm
    Wind Advisory March 15, 07:28pm until March 16, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 21 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: A 40 percent chance of snow, mainly before 1pm.  Patchy blowing snow. Cloudy, with a high near 26. Wind chill values between 2 and 8. Windy, with a west northwest wind 28 to 33 mph, with gusts as high as 45 mph.

    High: 26 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Wind chill values between -6 and 4. Blustery, with a west northwest wind 18 to 24 mph, with gusts as high as 32 mph.

    Low: 10 °F

    Mostly Cloudy
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 26. Wind chill values between -7 and 3. West northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 26 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 1am.  Mostly cloudy, with a low around 23. South southeast wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow
    then Snow
    Likely

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 51. South wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 51 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. South southwest wind around 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain before 11pm, then rain and snow likely between 11pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Patchy blowing snow after midnight. Low around 21. Windy, with a west northwest wind 20 to 25 mph increasing to 26 to 31 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.
Monday
A 40 percent chance of snow, mainly before 1pm. Patchy blowing snow. Cloudy, with a high near 26. Wind chill values between 2 and 8. Windy, with a west northwest wind 28 to 33 mph, with gusts as high as 45 mph.
Monday Night
Mostly cloudy, with a low around 10. Wind chill values between -6 and 4. Blustery, with a west northwest wind 18 to 24 mph, with gusts as high as 32 mph.
Tuesday
Mostly sunny, with a high near 26. Wind chill values between -7 and 3. West northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 23. South southeast wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 51. South wind 13 to 17 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 36. South southwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 39.
Friday
Partly sunny, with a high near 69.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
7:01 pm CDT Mar 15, 2026
7pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
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Additional Resources

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