Johnstown Climate Graph - Pennsylvania Climate Chart
Climate summaryWhat is the average weather in Johnstown, Pennsylvania?
Johnstown experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm, while winters are cold. Precipitation is fairly wet overall, with moisture spread relatively evenly throughout the year, though summer is typically the wettest season.
Based on climate normals · 1991–2020 Johnstown weather averages