Last updated: June 24, 2025
In May, the average temperature in Grants Pass, United States hovers around 14°C (57°F). Expect temperatures to swing from a chilly 0°C (33°F) at the lowest to a warm 32°C (89°F) at the peak. This month, you can also anticipate precipitation of 48 mm (1.9 in) spread over approximately 7 days. With an average humidity level of 83%, be prepared for a comfortably humid atmosphere!
In May in Grants Pass, the average temperature is 14°C (57°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as 0°C (33°F). Expect a wide range of temperatures, so plan your wardrobe accordingly to enjoy a comfortable trip!
In Grants Pass in May, the total precipitation amount is 48 mm (1.9 in) over a span of 7 days.
In Grants Pass in May, humidity is 83%. With an average temperature of 14°C (57°F), this humidity feels like you're stepping into a warm, damp embrace that can make outdoor activities quite uncomfortable, often leaving you sweaty and exhausted if you're not prepared with plenty of water and breathable clothing.
In Grants Pass 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 Grants Pass.
UV Risk Categories
Weather in Grants Pass varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Grants Pass, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 138 mm (5.4 inches) | 84% | moderate |
| February Weather | 4°C (40°F) | 151 mm (5.9 inches) | 85% | moderate |
| March Weather | 7°C (44°F) | 103 mm (4.0 inches) | 86% | high |
| April Weather | 10°C (50°F) | 88 mm (3.5 inches) | 83% | very high |
| May Weather | 14°C (57°F) | 48 mm (1.9 inches) | 83% | very high |
| June Weather | 18°C (65°F) | 19 mm (0.7 inches) | 83% | extreme |
| July Weather | 22°C (71°F) | 1 mm (0.0 inches) | 78% | very high |
| August Weather | 22°C (71°F) | 5 mm (0.2 inches) | 67% | very high |
| September Weather | 18°C (64°F) | 36 mm (1.4 inches) | 66% | very high |
| October Weather | 12°C (53°F) | 41 mm (1.6 inches) | 77% | high |
| November Weather | 7°C (44°F) | 86 mm (3.4 inches) | 87% | moderate |
| December Weather | 3°C (38°F) | 116 mm (4.6 inches) | 87% | low |