Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Partly Cloudy

9°F

-13°C

Humidity 70%
Wind Speed SW 18 mph
Barometer 30.09 in (1020.3 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 27 Jan 3:54 am CST
Extended Forecast for

Forsyth IL

Cold Weather Advisory January 27, 09:00pm until January 28, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  • Today

    Today: Patchy blowing snow before noon. Mostly sunny, with a high near 20. Wind chill values between -5 and 3. West northwest wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 20 °F

    Patchy
    Blowing Snow
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -8. Wind chill values between -11 and -21. West northwest wind 5 to 8 mph.

    Low: -8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 20. Wind chill values between -11 and -21. West wind 6 to 13 mph, with gusts as high as 18 mph.

    High: 20 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -2. Wind chill values between -6 and -11. West wind 5 to 8 mph becoming north northwest after midnight.

    Low: -2 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 14. North northwest wind around 6 mph.

    High: 14 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -4. North wind 5 to 8 mph.

    Low: -4 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 12. North wind 8 to 10 mph.

    High: 12 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -1.

    Low: -1 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy blowing snow before noon. Mostly sunny, with a high near 20. Wind chill values between -5 and 3. West northwest wind 10 to 18 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around -8. Wind chill values between -11 and -21. West northwest wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 20. Wind chill values between -11 and -21. West wind 6 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around -2. Wind chill values between -6 and -11. West wind 5 to 8 mph becoming north northwest after midnight.
Thursday
Mostly cloudy, with a high near 14. North northwest wind around 6 mph.
Thursday Night
Partly cloudy, with a low around -4. North wind 5 to 8 mph.
Friday
Mostly sunny, with a high near 12. North wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around -1.
Saturday
Mostly sunny, with a high near 17.
Saturday Night
Partly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Mostly cloudy, with a low around 6.
Monday
Mostly cloudy, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
4:16 am CST Jan 27, 2026
4am CST Jan 27, 2026-6pm CST Feb 2, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database