Last updated: June 24, 2025
In May, the average temperature in Waterbury, United States hovers around 12°C (54°F). However, be prepared for fluctuations, as temperatures can dip to a chilly -2°C (29°F) or soar up to a sizzling 33°C (92°F). Expect approximately 110 mm (4.3 in) of precipitation spread over 14 days, contributing to the region's characteristic 80% humidity. Embrace the diverse weather, and enjoy your stay!
In May in Waterbury, the average temperature is 12°C (54°F). Maximums can reach 33°C (92°F), while minimums can drop to as low as -2°C (29°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.
In Waterbury in May, the total precipitation amount is 110 mm (4.3 in) spread over 14 days.
In Waterbury in May, humidity is 80%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket that wraps around you, making it feel much cooler and damp. Traveling in these conditions might leave you feeling chilly and slightly uncomfortable, as the moisture in the air clings to your skin and clothes, turning each step into a soggy endeavor.
In Waterbury in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Waterbury.
UV Risk Categories
Weather in Waterbury varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Waterbury, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 87 mm (3.4 inches) | 93% | low |
| February Weather | -6°C (21°F) | 89 mm (3.5 inches) | 92% | moderate |
| March Weather | -2°C (28°F) | 84 mm (3.3 inches) | 86% | moderate |
| April Weather | 5°C (41°F) | 125 mm (4.9 inches) | 85% | very high |
| May Weather | 12°C (54°F) | 110 mm (4.3 inches) | 80% | very high |
| June Weather | 17°C (63°F) | 121 mm (4.8 inches) | 74% | very high |
| July Weather | 20°C (68°F) | 140 mm (5.5 inches) | 76% | very high |
| August Weather | 19°C (66°F) | 104 mm (4.1 inches) | 75% | very high |
| September Weather | 15°C (59°F) | 79 mm (3.1 inches) | 78% | high |
| October Weather | 9°C (48°F) | 158 mm (6.2 inches) | 86% | moderate |
| November Weather | 0°C (32°F) | 117 mm (4.6 inches) | 88% | moderate |
| December Weather | -5°C (23°F) | 92 mm (3.6 inches) | 89% | low |