Last updated: June 24, 2025
In May, the average temperature in Unionville, United States hovers around 15°C (60°F), with a range from a chilly -1°C (31°F) to a sweltering 33°C (91°F). Expect 129 mm (5.1 in) of precipitation spread over 13 days, contributing to an average humidity of 69%. Whether you're looking to bask in the warmth or prepare for cooler spells, it's a month of varied weather to experience!
In May in Unionville, the average temperature is 15°C (60°F), with maximums reaching 33°C (91°F) and minimums dropping as low as -1°C (31°F). This varied temperature makes it essential for travelers to pack layers to comfortably enjoy both warm and cool moments during their stay.
In Unionville in May, the precipitation amount is 129 mm (5.1 in) over the course of 13 days.
In Unionville in May, humidity is 69%. With an average temperature of 15°C (60°F), this humidity feels like a cool, damp embrace that can make outdoor activities feel slightly heavier and more exhausting, but still inviting for exploring the charming sights and sounds of the area.
In Unionville 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 Unionville.
UV Risk Categories
Weather in Unionville varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Unionville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 71 mm (2.8 inches) | 84% | moderate |
| February Weather | 0°C (33°F) | 98 mm (3.8 inches) | 82% | moderate |
| March Weather | 3°C (39°F) | 92 mm (3.6 inches) | 81% | high |
| April Weather | 10°C (49°F) | 114 mm (4.5 inches) | 78% | very high |
| May Weather | 15°C (60°F) | 129 mm (5.1 inches) | 69% | very high |
| June Weather | 20°C (69°F) | 97 mm (3.8 inches) | 69% | very high |
| July Weather | 24°C (75°F) | 135 mm (5.3 inches) | 62% | very high |
| August Weather | 22°C (73°F) | 130 mm (5.1 inches) | 65% | very high |
| September Weather | 19°C (66°F) | 107 mm (4.2 inches) | 68% | very high |
| October Weather | 13°C (56°F) | 139 mm (5.5 inches) | 74% | high |
| November Weather | 5°C (42°F) | 88 mm (3.5 inches) | 82% | moderate |
| December Weather | 1°C (34°F) | 103 mm (4.1 inches) | 80% | low |