Decker, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Decker, a town in Gibson County, Indiana.
This Afternoon
67°F
Mostly Cloudy
Mostly cloudy. High near 67, with temperatures falling to around 62 in the afternoon. West southwest wind around 13 mph, with gusts as high as 18 mph.
7-day forecast for Decker
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Cloudy | 13 mph WSW | 5% |
| Tonight | 47°F | Mostly Cloudy | 2 to 8 mph SW | 5% |
| Thursday | 64°F | Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 45°F | Mostly Cloudy | 1 to 6 mph W | 4% |
| Friday | 57°F | Mostly Cloudy | 3 to 12 mph NW | 1% |
| Friday Night | 35°F | Mostly Clear | 3 to 9 mph N | 0% |
| Saturday | 54°F | Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 31°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 58°F | Sunny | 0 to 6 mph WNW | 0% |
| Sunday Night | 34°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Monday | 63°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 38°F | Clear | 3 mph SW | 0% |
| Tuesday | 64°F | Sunny | 5 mph W | 1% |
| Tuesday Night | 39°F | Mostly Clear | 3 mph NW | 2% |
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 Nov 4, 2026.