New Trenton, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Trenton, a community in Franklin County, Indiana.
This Afternoon
68°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 68. South wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for New Trenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Chance Light Rain | 8 to 12 mph S | 48% |
| Tonight | 47°F | Patchy Drizzle then Mostly Cloudy | 2 to 7 mph W | 13% |
| Thursday | 64°F | Mostly Sunny | 3 to 10 mph SW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 1 to 5 mph W | 3% |
| Friday | 57°F | Mostly Cloudy | 1 to 8 mph NW | 10% |
| Friday Night | 34°F | Partly Cloudy | 2 to 7 mph NW | 6% |
| Saturday | 54°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Saturday Night | 30°F | Partly Cloudy | 0 to 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 0 to 7 mph W | 0% |
| Sunday Night | 32°F | Mostly Clear | 0 to 3 mph W | 0% |
| Monday | 62°F | Sunny | 0 to 6 mph W | 0% |
| Monday Night | 36°F | Mostly Clear | 3 mph SW | 0% |
| Tuesday | 65°F | Sunny | 2 to 7 mph W | 1% |
| Tuesday Night | 36°F | Mostly Clear | 0 to 3 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov) for New Trenton (39.309, -84.897). Updated through the day.
Growing snapshot for New Trenton
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
182 days
Hardiness zone
6b
More local growing data for New Trenton: nearby ZIP 47035 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Blooming Grove
Brookville
Cedar Grove
Hamburg
Lake View
Lakeshore Resort
Laurel
Metamora
Mount Carmel
Peppertown
St. Leon
Climate data from the nearest NOAA station, Brookville, In (9.8 mi from New Trenton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.