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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

53°F

12°C

Humidity 41%
Wind Speed W 9 G 18 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 19 Apr 9:54 am CDT
Extended Forecast for

4 Miles N Forsyth IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Today

    Today: Increasing clouds, with a high near 60. Breezy, with a west wind 14 to 22 mph, with gusts as high as 33 mph.

    High: 60 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33. North wind 6 to 15 mph, with gusts as high as 24 mph.

    Low: 33 °F

    Partly Cloudy
    then Frost

  • Monday

    Monday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 60. Northeast wind around 7 mph becoming south in the afternoon.

    High: 60 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. South wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 29 mph.

    High: 77 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. West southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. Southwest wind around 11 mph, with gusts as high as 16 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Breezy.

    High: 82 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
Increasing clouds, with a high near 60. Breezy, with a west wind 14 to 22 mph, with gusts as high as 33 mph.
Tonight
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33. North wind 6 to 15 mph, with gusts as high as 24 mph.
Monday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 60. Northeast wind around 7 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 47. South wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 77. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 57. West southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 78. Southwest wind around 11 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. Breezy.
Friday Night
Showers likely. Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
9:36 am CDT Apr 19, 2026
Forecast Valid:
10am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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