Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
44°F
7°C
| Humidity | 51% |
| Wind Speed | W 6 mph |
| Barometer | 30.16 in (1021.5 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 18 Apr 11:54 pm CDT |
Extended Forecast for
Forsyth IL
Frost Advisory April 19, 01:00am until April 19, 08:00am
Overnight

Low: 36 °F
Areas Frost
Sunday
High: 60 °F
Areas Frost
then Mostly
Sunny and
BreezySunday Night

Low: 33 °F
Mostly Clear
then Areas
FrostMonday

High: 60 °F
Areas Frost
then SunnyMonday Night

Low: 46 °F
Mostly Clear
Tuesday

High: 76 °F
Mostly Sunny
and BreezyTuesday Night

Low: 56 °F
Chance
ShowersWednesday

High: 78 °F
Mostly Sunny
Wednesday Night

Low: 58 °F
Mostly Clear
Detailed Forecast
Overnight
Areas of frost after 4am. Otherwise, mostly clear, with a low around 36. West southwest wind 6 to 8 mph.
Sunday
Areas of frost before 8am. Otherwise, increasing clouds, with a high near 60. Breezy, with a west wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 33. North wind 5 to 14 mph, with gusts as high as 21 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 60. Northeast wind 5 to 7 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 46. South southeast wind 8 to 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 76. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 30 mph.
Tuesday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 56. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 61.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Breezy.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 65.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Forsyth IL
39.93°N 88.96°W (Elev. 650 ft)
39.93°N 88.96°W (Elev. 650 ft)
12:01 am CDT Apr 19, 2026
12am CDT Apr 19, 2026-6pm CDT Apr 25, 2026



