Last updated: June 24, 2025
In May, the average temperature in Bellevue, United States hovers around 16°C (60°F). Visitors can expect a diverse climate with minimums dropping to -2°C (28°F) and soaring maxims reaching 35°C (96°F). The region receives 140 mm (5.5 in) of precipitation over 16 days, contributing to an average humidity of 82%.
In May in Bellevue, the average temperature is 16°C (60°F), with maximums reaching up to 35°C (96°F) and minimums dropping to as low as -2°C (28°F). This makes it a great time to visit Bellevue, as you'll experience mild weather with the potential for both warm and cool days, allowing for a variety of outdoor activities.
In Bellevue in May, the total precipitation amount is 140 mm (5.5 in) spread over 16 days.
In Bellevue in May humidity is 82%. With an average temperature of 16°C (60°F), this humidity feels like walking through a warm, thick blanket that clings to your skin, making every step feel heavier and travel more exhausting.
In Bellevue 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 Bellevue.
UV Risk Categories
Weather in Bellevue varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bellevue, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 68 mm (2.7 inches) | 87% | low |
| February Weather | -3°C (27°F) | 74 mm (2.9 inches) | 87% | moderate |
| March Weather | 3°C (37°F) | 75 mm (3.0 inches) | 86% | high |
| April Weather | 8°C (47°F) | 91 mm (3.6 inches) | 87% | very high |
| May Weather | 16°C (60°F) | 140 mm (5.5 inches) | 82% | very high |
| June Weather | 21°C (70°F) | 102 mm (4.0 inches) | 81% | very high |
| July Weather | 24°C (75°F) | 96 mm (3.8 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 71 mm (2.8 inches) | 79% | very high |
| September Weather | 19°C (66°F) | 101 mm (4.0 inches) | 79% | high |
| October Weather | 12°C (53°F) | 127 mm (5.0 inches) | 82% | moderate |
| November Weather | 4°C (39°F) | 68 mm (2.7 inches) | 87% | moderate |
| December Weather | 0°C (33°F) | 63 mm (2.5 inches) | 86% | low |