Last updated: June 24, 2025
In Mount Joy, United States, the average temperature in May hovers around 18°C (64°F), with an impressive range where minimums can drop to 1°C (34°F) and maximums soar to 33°C (93°F). Expect 14 days of rain throughout the month, accumulating 125 mm (4.9 in) of precipitation. With an average humidity of 78%, be prepared for a pleasantly damp atmosphere!
In May in Mount Joy, the average temperature is 18°C (64°F). Maximum temperatures can reach 33°C (93°F), while the minimum can drop as low as 1°C (34°F). Visitors should be prepared for a wide range of temperatures, making layering essential for an enjoyable trip.
In Mount Joy in May, the precipitation amount is 125 mm (4.9 in) over the course of 14 days.
In Mount Joy in May, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.
In Mount Joy in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Mount Joy.
UV Risk Categories
Weather in Mount Joy varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Mount Joy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 60 mm (2.4 inches) | 84% | moderate |
| February Weather | 3°C (38°F) | 101 mm (4.0 inches) | 83% | moderate |
| March Weather | 6°C (44°F) | 99 mm (3.9 inches) | 83% | high |
| April Weather | 12°C (54°F) | 98 mm (3.9 inches) | 81% | very high |
| May Weather | 18°C (64°F) | 125 mm (4.9 inches) | 78% | very high |
| June Weather | 23°C (73°F) | 97 mm (3.8 inches) | 79% | very high |
| July Weather | 26°C (79°F) | 130 mm (5.1 inches) | 74% | very high |
| August Weather | 24°C (76°F) | 130 mm (5.1 inches) | 72% | very high |
| September Weather | 21°C (70°F) | 108 mm (4.2 inches) | 75% | very high |
| October Weather | 16°C (60°F) | 101 mm (4.0 inches) | 81% | high |
| November Weather | 7°C (45°F) | 88 mm (3.5 inches) | 85% | moderate |
| December Weather | 4°C (39°F) | 93 mm (3.7 inches) | 84% | low |