Decker, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Decker, a town in Gibson County, Indiana.
This Afternoon
96°F
Mostly Sunny
Mostly sunny. High near 96, with temperatures falling to around 94 in the afternoon. Heat index values as high as 104. North northeast wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Decker
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Mostly Sunny | 6 mph NNE | 10% |
| Tonight | 72°F | Scattered Showers And Thunderstorms then Partly Cloudy | 6 mph E | 26% |
| Saturday | 95°F | Mostly Sunny | 3 to 7 mph SSW | 12% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph S | 11% |
| Sunday | 95°F | Mostly Sunny | 3 to 7 mph W | 11% |
| Sunday Night | 68°F | Mostly Cloudy then Chance Rain Showers | 7 mph NNE | 31% |
| Monday | 84°F | Chance Rain Showers | 6 to 10 mph NE | 46% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 7 to 13 mph NNE | 46% |
| Tuesday | 75°F | Chance Showers And Thunderstorms | 8 to 12 mph NNE | 43% |
| Tuesday Night | 58°F | Mostly Cloudy | 5 to 13 mph NNE | 11% |
| Wednesday | 75°F | Partly Sunny | 5 to 10 mph N | 4% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 10 mph N | 4% |
| Thursday | 76°F | Mostly Sunny | 3 to 9 mph N | 3% |
| Thursday Night | 58°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Decker (38.518, -87.524). Updated through the day.
Growing snapshot for Decker
Last spring frost
Apr 13
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
6b
More local growing data for Decker: nearby ZIP 47640 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Buckskin
Cynthiana
Fort Branch
Francisco
Griffin
Haubstadt
Hazleton
Johnson
Mackey
Oakland City
Owensville
Patoka
Princeton
Somerville
Climate data from the nearest NOAA station, Princeton 1 W, In (10.2 mi from Decker). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.