Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Light Snow

13°F

-11°C

Humidity 77%
Wind Speed SW 7 mph
Barometer 30.14 in (1021.8 mb)
Dewpoint 7°F (-14°C)
Visibility 8.00 mi
Wind Chill3°F (-16°C)
Last update 18 Jan 5:54 am CST
Extended Forecast for

4 Miles N Forsyth IL

Cold Weather Advisory January 19, 03:00am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  • Today

    Today: A chance of flurries between 1pm and 5pm, then a slight chance of snow after 5pm.  Increasing clouds, with a high near 24. Wind chill values between -1 and 9. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 20%.

    High: 24 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tonight

    Tonight: A chance of snow before 9pm, then a chance of flurries between 9pm and midnight.  Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values between -3 and -13. Blustery, with a southwest wind 11 to 16 mph becoming west northwest 18 to 23 mph in the evening. Winds could gust as high as 37 mph.  Chance of precipitation is 30%.

    Low: 4 °F

    Blustery.
    Chance Snow
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 14. Wind chill values between -8 and -18. Blustery, with a west northwest wind 20 to 25 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 14 °F

    Sunny and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 6. Wind chill values between -5 and zero. Southwest wind 6 to 10 mph, with gusts as high as 16 mph.

    Low: 6 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. South wind 10 to 18 mph, with gusts as high as 24 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37. West wind 11 to 18 mph, with gusts as high as 24 mph.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of flurries between 1pm and 5pm, then a slight chance of snow after 5pm. Increasing clouds, with a high near 24. Wind chill values between -1 and 9. South southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
A chance of snow before 9pm, then a chance of flurries between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values between -3 and -13. Blustery, with a southwest wind 11 to 16 mph becoming west northwest 18 to 23 mph in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 30%.
M.L.King Day
Sunny, with a high near 14. Wind chill values between -8 and -18. Blustery, with a west northwest wind 20 to 25 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Partly cloudy, with a low around 6. Wind chill values between -5 and zero. Southwest wind 6 to 10 mph, with gusts as high as 16 mph.
Tuesday
Mostly sunny, with a high near 29. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 22. South wind 10 to 18 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 37. West wind 11 to 18 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
A chance of rain. Mostly cloudy, with a high near 37.
Friday Night
A chance of snow. Mostly cloudy, with a low around 16.
Saturday
A chance of snow. Partly sunny, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
5:37 am CST Jan 18, 2026
6am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
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Additional Resources

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