Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
44°F
7°C
| Humidity | 93% |
| Wind Speed | NE 18 mph |
| Barometer | 30.09 in (1019.2 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 36°F (2°C) |
| Last update | 1 Apr 11:54 am CDT |
Extended Forecast for
3 Miles WSW Forsyth IL
This Afternoon

High: 53 °F
Chance
T-stormsTonight
Low: 50 °F
Chance
T-storms then
ShowersThursday
High: 74 °F
Breezy.
Slight Chance
T-storms then
Showers
LikelyThursday Night
Low: 59 °F
Chance
T-storms and
Breezy then
Chance
ShowersFriday
High: 78 °F
Partly Sunny
then Chance
T-stormsFriday Night
Low: 55 °F
Showers
Likely then
ShowersSaturday

High: 62 °F
Showers
LikelySaturday Night
Low: 35 °F
Mostly Cloudy
then Partly
Cloudy and
BreezySunday

High: 52 °F
Mostly Sunny
and Breezy
Detailed Forecast
This Afternoon
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 53. East northeast wind around 15 mph, with gusts as high as 23 mph.
Tonight
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Low around 50. East wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 74. Breezy, with a south wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers after 10pm. Mostly cloudy, with a low around 59. Breezy, with a southwest wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 50%.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South wind 8 to 16 mph, with gusts as high as 24 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 55. South wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. West wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Partly cloudy, with a low around 35. Breezy.
Sunday
Mostly sunny, with a high near 52. Breezy.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 55.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Forsyth IL
39.89°N 89.02°W (Elev. 656 ft)
39.89°N 89.02°W (Elev. 656 ft)
12:11 pm CDT Apr 1, 2026
12pm CDT Apr 1, 2026-6pm CDT Apr 7, 2026



