Last updated: June 24, 2025
In Mountain View, United States, the average temperature in May hovers around 13°C (56°F), with possibilities ranging from a brisk -6°C (21°F) to a sweltering 33°C (91°F). This month experiences about 111 mm (4.4 in) of precipitation over 14 days, accompanied by an average humidity of 66%. Whether you’re wrapping up against the chill or seeking respite from the heat, be prepared for the diverse weather conditions!
In May in Mountain View, the average temperature is 13°C (56°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as -6°C (21°F). It's advisable to pack a range of clothing layers to stay comfortable during your travels.
In Mountain View in May, the precipitation amount is 111 mm (4.4 in) during 14 days, indicating a significant amount of rainfall for that period.
In Mountain View in May, humidity is 66%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing embrace, making travel comfortable yet occasionally brisk, inviting you to explore while ensuring you stay hydrated and take breaks from time to time.
In Mountain View in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Mountain View.
UV Risk Categories
Weather in Mountain View varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Mountain View, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 23 mm (0.9 inches) | 88% | moderate |
| February Weather | -1°C (30°F) | 29 mm (1.1 inches) | 87% | high |
| March Weather | 4°C (40°F) | 57 mm (2.3 inches) | 81% | very high |
| April Weather | 8°C (47°F) | 55 mm (2.2 inches) | 76% | extreme |
| May Weather | 13°C (56°F) | 111 mm (4.4 inches) | 66% | extreme |
| June Weather | 20°C (68°F) | 48 mm (1.9 inches) | 58% | extreme |
| July Weather | 23°C (74°F) | 43 mm (1.7 inches) | 52% | extreme |
| August Weather | 22°C (72°F) | 35 mm (1.4 inches) | 56% | extreme |
| September Weather | 19°C (66°F) | 29 mm (1.2 inches) | 65% | very high |
| October Weather | 9°C (49°F) | 37 mm (1.5 inches) | 76% | high |
| November Weather | 5°C (41°F) | 24 mm (1.0 inches) | 82% | moderate |
| December Weather | 1°C (34°F) | 14 mm (0.6 inches) | 89% | moderate |