Last updated: June 24, 2025
In May, the average temperature in Portville, United States is a mild 14°C (57°F). During this month, temperatures can swing from a chilly -4°C (25°F) to a warm 30°C (86°F). Expect a fair amount of rain with a total precipitation of 124 mm (4.9 in) spread over 15 days, coupled with an average humidity of 80%. Whether you're enjoying the crisp mornings or the warmer afternoons, be prepared for a range of weather conditions!
In May in Portville, the average temperature is 14°C (57°F), with maximums that can reach 30°C (86°F) and minimums that can drop as low as -4°C (25°F). This varied climate makes it essential for travelers to pack both light and warm clothing to ensure comfort during their stay.
In Portville in May, the total precipitation amount is 124 mm (4.9 in) over a period of 15 days.
In Portville in May, humidity is 80%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making travel uncomfortable and sticky, as sweat clings to your skin and the air feels heavy with moisture.
In Portville 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 Portville.
UV Risk Categories
Weather in Portville varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Portville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 82 mm (3.2 inches) | 89% | moderate |
| February Weather | -3°C (27°F) | 95 mm (3.7 inches) | 90% | moderate |
| March Weather | 1°C (34°F) | 86 mm (3.4 inches) | 89% | high |
| April Weather | 7°C (45°F) | 114 mm (4.5 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 124 mm (4.9 inches) | 80% | very high |
| June Weather | 18°C (65°F) | 107 mm (4.2 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 113 mm (4.5 inches) | 74% | very high |
| August Weather | 20°C (68°F) | 84 mm (3.3 inches) | 64% | very high |
| September Weather | 16°C (62°F) | 85 mm (3.3 inches) | 67% | very high |
| October Weather | 11°C (52°F) | 123 mm (4.9 inches) | 81% | high |
| November Weather | 3°C (37°F) | 89 mm (3.5 inches) | 89% | moderate |
| December Weather | -1°C (30°F) | 89 mm (3.5 inches) | 88% | low |