Last updated: June 24, 2025
In May, the average temperature in Corvallis, United States hovers around 13°C (57°F), with extremes ranging from a brisk 1°C (34°F) to a warm 30°C (86°F). Expect about 60 mm (2.3 in) of precipitation over 9 days, and prepare for an average humidity level of 83%.
In May in Corvallis, the average temperature is 13°C (57°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 1°C (34°F). It's advisable to pack layers and be prepared for varying conditions during your travels.
In Corvallis in May, the total precipitation amount is 60 mm (2.3 in), occurring over the course of 9 days.
In Corvallis in May humidity is 83%. With an average temperature of 13°C (57°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities slightly uncomfortable and requiring a light jacket.
In Corvallis 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 Corvallis.
UV Risk Categories
Weather in Corvallis varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Corvallis, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 5°C (42°F) | 155 mm (6.1 inches) | 85% | low |
February Weather | 5°C (41°F) | 179 mm (7.0 inches) | 84% | moderate |
March Weather | 7°C (45°F) | 133 mm (5.2 inches) | 85% | high |
April Weather | 10°C (50°F) | 117 mm (4.6 inches) | 83% | high |
May Weather | 13°C (57°F) | 60 mm (2.3 inches) | 83% | very high |
June Weather | 17°C (63°F) | 42 mm (1.7 inches) | 83% | very high |
July Weather | 20°C (69°F) | 3 mm (0.1 inches) | 82% | very high |
August Weather | 21°C (69°F) | 5 mm (0.2 inches) | 74% | very high |
September Weather | 17°C (64°F) | 61 mm (2.4 inches) | 71% | very high |
October Weather | 12°C (53°F) | 84 mm (3.3 inches) | 81% | moderate |
November Weather | 8°C (46°F) | 139 mm (5.5 inches) | 87% | moderate |
December Weather | 5°C (41°F) | 189 mm (7.4 inches) | 87% | low |