New Harmony, IN Weather & Growing Conditions
Today
86°F
Sunny
Sunny. High near 86, with temperatures falling to around 84 in the afternoon. Northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Clear | 2 mph E | 0% |
| Wednesday | 88°F | Sunny | 2 mph SSW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 0 to 3 mph SSE | 0% |
| Thursday | 87°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 20% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 mph S | 53% |
| Friday | 87°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 53% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SW | 45% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 5 mph SW | 45% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph S | 17% |
| Sunday | 90°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SSW | 15% |
| Sunday Night | 73°F | Mostly Clear | 6 mph SSW | 9% |
| Monday | 93°F | Sunny | 6 to 10 mph SSW | 8% |
| Monday Night | 75°F | Mostly Clear | 9 mph SSW | 12% |
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 Aug 4, 2026.