Last updated: June 24, 2025
In May, the average temperature in Mountain View, United States hovers around 20°C (69°F), providing a pleasant climate. Expect minimum temperatures to dip to 3°C (38°F) and occasionally soar to maximums of 35°C (95°F). Rainfall is fairly frequent, with an average precipitation of 124 mm (4.9 in) over 13 days, and the air often feels quite humid, with an average humidity of 83%.
In May in Mountain View, the average temperature is 20°C (69°F). Maximums can reach 35°C (95°F), while minimums can be as low as 3°C (38°F). This variability makes it essential for travelers to pack accordingly and prepare for both warm and cool conditions.
In Mountain View in May, the total precipitation amount is 124 mm (4.9 in) over a span of 13 days.
In Mountain View in May, humidity is 83%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making every step slightly more laborious and the air thick with moisture, which can be quite stifling for traveling.
In Mountain View 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 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 | 5°C (41°F) | 87 mm (3.4 inches) | 86% | moderate |
| February Weather | 8°C (47°F) | 121 mm (4.8 inches) | 85% | high |
| March Weather | 11°C (52°F) | 97 mm (3.8 inches) | 84% | very high |
| April Weather | 15°C (60°F) | 119 mm (4.7 inches) | 82% | very high |
| May Weather | 20°C (69°F) | 124 mm (4.9 inches) | 83% | very high |
| June Weather | 24°C (75°F) | 93 mm (3.6 inches) | 82% | extreme |
| July Weather | 26°C (79°F) | 81 mm (3.2 inches) | 80% | extreme |
| August Weather | 25°C (77°F) | 114 mm (4.5 inches) | 74% | very high |
| September Weather | 22°C (73°F) | 126 mm (4.9 inches) | 75% | very high |
| October Weather | 17°C (63°F) | 120 mm (4.7 inches) | 79% | very high |
| November Weather | 9°C (49°F) | 87 mm (3.4 inches) | 87% | moderate |
| December Weather | 7°C (45°F) | 116 mm (4.6 inches) | 87% | moderate |