Harmony, PA Weather & Growing Conditions
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. Southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 0 to 5 mph SE | 3% |
| Wednesday | 76°F | Partly Sunny | 5 to 9 mph S | 13% |
| Wednesday Night | 59°F | Light Rain | 7 to 10 mph S | 100% |
| Thursday | 69°F | Slight Chance Light Rain then Mostly Sunny | 6 to 10 mph SW | 22% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Friday | 64°F | Partly Sunny | 0 to 5 mph W | 12% |
| Friday Night | 43°F | Chance Light Rain | 5 mph NW | 30% |
| Saturday | 55°F | Chance Light Rain | 5 to 9 mph W | 30% |
| Saturday Night | 35°F | Chance Light Rain then Mostly Cloudy | 2 to 6 mph W | 30% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 2 to 9 mph SW | 16% |
| Sunday Night | 34°F | Slight Chance Light Rain | 7 mph W | 19% |
| Monday | 56°F | Chance Light Rain | 7 to 12 mph W | 31% |
| Monday Night | 35°F | Chance Light Rain then Partly Cloudy | 8 mph SW | 31% |
| Tuesday | 60°F | Mostly Sunny | 8 to 13 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harmony, PA
Last spring frost
Apr 27
First fall frost
Oct 25
Growing season
178 days
Hardiness zone
6b
Explore more for Harmony, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Beaver Falls 1 Ne, Pa (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.