Last updated: June 24, 2025
In Plum City, United States, the average temperature in May is a pleasant 15°C (59°F). However, be prepared for temperature fluctuations, as it can dip to a chilly 0°C (32°F) or rise to a warm 35°C (96°F). With an average precipitation of 145 mm (5.7 in) spread across 13 days, and a humidity level of 79%, you might want to pack for both sun and rain.
In May in Plum City, the average temperature is 15°C (59°F). The maximum can reach 35°C (96°F), while the minimum can drop as low as 0°C (32°F). It’s advisable to pack layers and prepare for a range of temperatures when traveling to Plum City during this time.
In Plum City in May, the precipitation amount is 145 mm (5.7 in) over the course of 13 days.
In Plum City in May humidity is 79%. With an average temperature of 15°C (59°F), this humidity feels like a muggy embrace that clings to your skin, making outdoor activities somewhat uncomfortable. Travelers may find themselves frequently seeking shelter or refreshing drinks to combat the warm, damp air, as the moisture in the atmosphere feels particularly heavy, especially during longer excursions.
In Plum City 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 Plum City.
UV Risk Categories
Weather in Plum City varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Plum City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (17°F) | 33 mm (1.3 inches) | 88% | low |
| February Weather | -8°C (18°F) | 43 mm (1.7 inches) | 89% | moderate |
| March Weather | 1°C (33°F) | 59 mm (2.3 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 92 mm (3.6 inches) | 85% | high |
| May Weather | 15°C (59°F) | 145 mm (5.7 inches) | 79% | very high |
| June Weather | 21°C (70°F) | 134 mm (5.3 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 120 mm (4.7 inches) | 80% | very high |
| August Weather | 21°C (70°F) | 133 mm (5.2 inches) | 78% | very high |
| September Weather | 17°C (64°F) | 109 mm (4.3 inches) | 80% | high |
| October Weather | 9°C (48°F) | 109 mm (4.3 inches) | 84% | moderate |
| November Weather | 1°C (33°F) | 45 mm (1.8 inches) | 89% | moderate |
| December Weather | -5°C (24°F) | 56 mm (2.2 inches) | 85% | low |