Last updated: June 24, 2025
In May, the average temperature in Oregon, United States hovers around 16°C (61°F). Visitors can expect a range from a chilly -1°C (30°F) to a warm 33°C (92°F). With an average precipitation of 156 mm (6.2 in) spread over 15 days, it's wise to pack an umbrella! Additionally, the region maintains a high average humidity of 79%, contributing to its vibrant atmosphere.
In May in Oregon, the average temperature is 16°C (61°F). Maximum temperatures can reach 33°C (92°F), while the minimum can drop as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures, so packing layered clothing is advisable.
In Oregon in May, the precipitation amount is 156 mm (6.2 in) over a span of 15 days.
In Oregon in May humidity is 79%. With an average temperature of 16°C (61°F), this humidity feels like a warm, moist embrace, making travel a bit more challenging as the air tends to weigh heavily, but it also offers a refreshing atmosphere perfect for exploring local sights and enjoying nature.
In Oregon 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 Oregon.
UV Risk Categories
Weather in Oregon varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Oregon, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -5°C (23°F) | 60 mm (2.4 inches) | 82% | moderate |
February Weather | -4°C (26°F) | 56 mm (2.2 inches) | 83% | moderate |
March Weather | 4°C (39°F) | 79 mm (3.1 inches) | 84% | high |
April Weather | 9°C (48°F) | 109 mm (4.3 inches) | 85% | very high |
May Weather | 16°C (61°F) | 156 mm (6.2 inches) | 79% | very high |
June Weather | 22°C (72°F) | 121 mm (4.8 inches) | 82% | very high |
July Weather | 24°C (76°F) | 78 mm (3.1 inches) | 80% | very high |
August Weather | 23°C (73°F) | 77 mm (3.0 inches) | 81% | very high |
September Weather | 20°C (67°F) | 120 mm (4.7 inches) | 80% | very high |
October Weather | 12°C (54°F) | 116 mm (4.6 inches) | 82% | high |
November Weather | 3°C (38°F) | 49 mm (1.9 inches) | 88% | moderate |
December Weather | 0°C (32°F) | 51 mm (2.0 inches) | 84% | low |