Mount Joy, in Pennsylvania, United States, is home to roughly 8,100 people in the Eastern Time Zone at 40.1°N latitude.
In 2025, Mount Joy recorded an average annual temperature of 54°F. The hottest temperatures reached 98°F in June; the coolest were 0°F in January. Total precipitation for the year was 38 inches, with the wettest month being May. Snowfall for the year totaled approximately 6 inches.
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