Last updated: June 24, 2025
In October, the average temperature in Mountain View, United States hovers around 9°C (49°F). While it can dip as low as -18°C (1°F), temperatures may also reach a balmy 30°C (86°F). Expect 37 mm (1.5 in) of precipitation over approximately 7 days, with an average humidity of 76%.
In October in Mountain View, the average temperature is 9°C (49°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -18°C (1°F). Be prepared for a wide range of temperatures when planning your trip!
In Mountain View in October, the precipitation amount is 37 mm (1.5 in) during a span of 7 days.
In Mountain View in October, humidity is 76%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making outdoor adventures a bit uncomfortable as the dampness seeps into your clothes and lingers in the air, often leading to a sense of coolness that can be refreshing but also dampens the joy of exploration.
In Mountain View in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. 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 October’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 |