Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

45°F

7°C

Humidity 56%
Wind Speed SE 14 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 14 Mar 11:54 am CDT
Extended Forecast for

Forsyth IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory
  • This Afternoon

    This Afternoon: Partly sunny, with a high near 54. East southeast wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 54 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. East southeast wind 13 to 18 mph, with gusts as high as 28 mph.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 3pm, then showers likely and possibly a thunderstorm after 3pm.  Mostly cloudy, with a high near 64. Windy, with a south wind 22 to 32 mph, with gusts as high as 49 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Windy. Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 11pm, then snow.  Patchy blowing snow after midnight. Low around 19. Wind chill values between 5 and 15. Windy, with a west northwest wind 26 to 31 mph, with gusts as high as 46 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 19 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: A 40 percent chance of snow before 1pm.  Areas of blowing snow. Mostly cloudy, with a high near 25. Windy, with a west northwest wind 29 to 31 mph, with gusts as high as 45 mph.

    High: 25 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 16 to 23 mph, with gusts as high as 31 mph.

    Low: 9 °F

    Mostly Cloudy
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28. West northwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 23.

    Low: 23 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Mostly Cloudy
    and Breezy
    then Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 54. East southeast wind 14 to 16 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 46. East southeast wind 13 to 18 mph, with gusts as high as 28 mph.
Sunday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 64. Windy, with a south wind 22 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain showers before 11pm, then snow. Patchy blowing snow after midnight. Low around 19. Wind chill values between 5 and 15. Windy, with a west northwest wind 26 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 40 percent chance of snow before 1pm. Areas of blowing snow. Mostly cloudy, with a high near 25. Windy, with a west northwest wind 29 to 31 mph, with gusts as high as 45 mph.
Monday Night
Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 16 to 23 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 28. West northwest wind 9 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 54. Breezy.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
12:01 pm CDT Mar 14, 2026
12pm CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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