Mount Joy, in Pennsylvania, United States, is home to roughly 8,100 people in the Eastern Time Zone at 40.1°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Mount Joy recorded a mean annual temperature of 54°F, ranging from 0°F lows in January to 98°F highs in June, with about 38 inches of precipitation across the year.
View historical weather for Mount Joy · More cities in Pennsylvania