New Harmony, IN Weather & Growing Conditions
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 3 mph SE | 3% |
| Saturday | 97°F | Sunny | 2 to 7 mph SW | 8% |
| Saturday Night | 73°F | Mostly Clear | 5 mph SSW | 4% |
| Sunday | 97°F | Sunny | 3 to 7 mph W | 11% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Rain Showers | 6 mph NNE | 16% |
| Monday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 9 mph NNE | 43% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 7 to 13 mph NNE | 43% |
| Tuesday | 77°F | Chance Showers And Thunderstorms | 7 to 13 mph NNE | 36% |
| Tuesday Night | 58°F | Mostly Cloudy | 6 to 14 mph N | 10% |
| Wednesday | 76°F | Mostly Sunny | 5 to 9 mph N | 4% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 9 mph NNE | 3% |
| Thursday | 78°F | Mostly Sunny | 3 to 9 mph N | 3% |
| Thursday Night | 59°F | Partly Cloudy | 3 to 8 mph NNE | 3% |
| Friday | 77°F | Mostly Sunny | 3 to 8 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Harmony, IN
Last spring frost
Apr 7
First fall frost
Oct 28
Growing season
202 days
Hardiness zone
7a
Explore more for New Harmony, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Mt Vernon, In (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.