Last updated: June 24, 2025
In May, the average temperature in Mendham, United States is a pleasant 16°C (62°F). However, temperatures can sometimes vary dramatically, dipping to a chilly 1°C (33°F) or soaring to a sizzling 33°C (92°F). Expect 135 mm (5.3 in) of precipitation over 13 days, contributing to an average humidity of 69%. Whether you're exploring the local sights or enjoying outdoor activities, be prepared for some variability in the weather!
In May in Mendham, the average temperature is 16°C (62°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 1°C (33°F). Be prepared for a wide range of temperatures, making it essential to pack both lightweight and warmer clothing for your travels.
In Mendham in May, the precipitation amount is 135 mm (5.3 in) over the course of 13 days.
In Mendham in May humidity is 69%. With an average temperature of 16°C (62°F), this humidity feels like a warm, slightly uncomfortable embrace, making outdoor activities a bit sticky and necessitating frequent hydration during travel.
In Mendham 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 Mendham.
UV Risk Categories
Weather in Mendham varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Mendham, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (33°F) | 70 mm (2.7 inches) | 84% | moderate |
| February Weather | 2°C (36°F) | 104 mm (4.1 inches) | 82% | moderate |
| March Weather | 5°C (41°F) | 103 mm (4.1 inches) | 81% | high |
| April Weather | 11°C (52°F) | 116 mm (4.6 inches) | 78% | very high |
| May Weather | 16°C (62°F) | 135 mm (5.3 inches) | 69% | very high |
| June Weather | 21°C (71°F) | 106 mm (4.2 inches) | 69% | very high |
| July Weather | 25°C (77°F) | 142 mm (5.6 inches) | 62% | very high |
| August Weather | 24°C (75°F) | 136 mm (5.4 inches) | 65% | very high |
| September Weather | 20°C (69°F) | 101 mm (4.0 inches) | 68% | very high |
| October Weather | 15°C (59°F) | 142 mm (5.6 inches) | 74% | high |
| November Weather | 7°C (44°F) | 86 mm (3.4 inches) | 82% | moderate |
| December Weather | 3°C (37°F) | 113 mm (4.4 inches) | 80% | low |