Harleysville, PA Weather & Growing Conditions
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. South wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 0 to 10 mph S | 2% |
| Tonight | 57°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph S | 3% |
| Thursday | 72°F | Light Rain Likely | 5 to 10 mph S | 62% |
| Thursday Night | 59°F | Light Rain | 0 to 5 mph SW | 85% |
| Friday | 69°F | Light Rain | 0 mph | 85% |
| Friday Night | 47°F | Light Rain Likely | 0 to 5 mph NW | 69% |
| Saturday | 63°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Saturday Night | 39°F | Slight Chance Light Rain | 5 to 10 mph W | 15% |
| Sunday | 59°F | Mostly Sunny | 5 to 10 mph NW | 4% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 5% |
| Monday | 58°F | Sunny then Slight Chance Light Rain | 5 to 15 mph W | 15% |
| Monday Night | 33°F | Slight Chance Light Rain then Mostly Clear | 5 mph W | 15% |
| Tuesday | 62°F | Sunny | 5 to 10 mph W | 4% |
| Tuesday Night | 35°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harleysville, PA
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
173 days
Hardiness zone
7a
Explore more for Harleysville, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Graterford 1 E, Pa (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.