Harleysville

What is the climate like in Harleysville?

The best time to visit Harleysville is typically June, the year's most comfortable month (6.4/10). Harleysville is warmest in July, when daily highs average 87°F (30°C), and coolest in January, when lows fall to about 28°F (-2°C). The wettest month is typically July and the driest is November; the year sees roughly 49 in (1250 mm) of precipitation.

• Best time to visitJune — the year's comfort peak (6.4/10)
• Warmest monthJuly — average high 87°F (30°C)
• Coolest monthJanuary — average low 28°F (-2°C)
• Wettest monthJuly (5.6 in (142 mm))
• Driest monthNovember (3.1 in (80 mm))
• Annual precipitation49 in (1250 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPhoenixville 1 E, 20 km away (1893-2026)