Last updated: June 24, 2025
In May, the average temperature in Grangeville, United States is a mild 12°C (53°F). However, temperatures can swing dramatically, reaching a minimum of -3°C (27°F) and peaking at a warm 30°C (86°F). Expect about 93 mm (3.6 in) of precipitation over 13 days, accompanied by an average humidity of 77%, creating a uniquely dynamic climate experience.
In May in Grangeville, the average temperature is 12°C (53°F). Maximums can reach 30°C (86°F), and minimums can drop as low as -3°C (27°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!
In Grangeville in May, the precipitation amount totals 93 mm (3.6 in) spread over 13 days.
In Grangeville in May, humidity is 77%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that can make exploration rather uncomfortable, as the moisture in the air clings to your skin and makes even a light breeze feel colder, often requiring additional layers for comfort while traveling.
In Grangeville 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 Grangeville.
UV Risk Categories
Weather in Grangeville varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Grangeville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 65 mm (2.6 inches) | 90% | moderate |
| February Weather | -1°C (31°F) | 133 mm (5.2 inches) | 91% | moderate |
| March Weather | 3°C (38°F) | 90 mm (3.5 inches) | 88% | high |
| April Weather | 7°C (45°F) | 106 mm (4.2 inches) | 84% | very high |
| May Weather | 12°C (53°F) | 93 mm (3.6 inches) | 77% | very high |
| June Weather | 16°C (61°F) | 83 mm (3.3 inches) | 78% | very high |
| July Weather | 22°C (71°F) | 7 mm (0.3 inches) | 77% | very high |
| August Weather | 21°C (70°F) | 30 mm (1.2 inches) | 63% | very high |
| September Weather | 15°C (60°F) | 45 mm (1.8 inches) | 60% | very high |
| October Weather | 8°C (46°F) | 79 mm (3.1 inches) | 77% | moderate |
| November Weather | 3°C (38°F) | 82 mm (3.2 inches) | 86% | moderate |
| December Weather | 0°C (32°F) | 86 mm (3.4 inches) | 89% | low |