Last updated: June 24, 2025
In October, the average temperature in Mountain View, United States hovers around 15°C (59°F). However, be prepared for a range of temperatures, as it can dip to a chilly -5°C (24°F) or soar to a balmy 33°C (91°F). Expect about 122 mm (4.8 in) of precipitation over 10 days, contributing to an average humidity of 72%. Stay ready for a variety of weather conditions!
In October in Mountain View, the average temperature is 15°C (59°F). The maximum can reach 33°C (91°F), while the minimum can drop as low as -5°C (24°F). Be sure to pack for a wide range of temperatures when traveling during this time.
In Mountain View in October, the total precipitation amount reaches 122 mm (4.8 in) over the course of 10 days.
In Mountain View in October humidity is 72%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket wrapping around you, creating a sultry atmosphere that can make traveling a bit uncomfortable. The stickiness in the air can leave you feeling sluggish, so it’s advisable to stay hydrated and take breaks often while exploring.
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 | 2°C (35°F) | 79 mm (3.1 inches) | 83% | moderate |
| February Weather | 3°C (39°F) | 107 mm (4.2 inches) | 81% | high |
| March Weather | 9°C (49°F) | 148 mm (5.8 inches) | 80% | high |
| April Weather | 13°C (55°F) | 164 mm (6.5 inches) | 80% | very high |
| May Weather | 19°C (66°F) | 189 mm (7.4 inches) | 83% | extreme |
| June Weather | 24°C (75°F) | 77 mm (3.0 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 80 mm (3.2 inches) | 76% | extreme |
| August Weather | 24°C (76°F) | 108 mm (4.2 inches) | 69% | very high |
| September Weather | 22°C (72°F) | 53 mm (2.1 inches) | 68% | very high |
| October Weather | 15°C (59°F) | 122 mm (4.8 inches) | 72% | high |
| November Weather | 8°C (46°F) | 73 mm (2.9 inches) | 83% | moderate |
| December Weather | 5°C (41°F) | 71 mm (2.8 inches) | 86% | moderate |