Climate averages 1991–2020
Mountain View weather
in October.
A warm, fairly dry month: the 5th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Mountain View: daytime highs average 23.0°C and nights cool to about 13.3°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 23 mm of rain on roughly 3 days, which makes October a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 16 min on an average October day.
The nearest other city in this atlas is Sunnyvale (5 km away). In October its highs average 23.3°C, about as warm as Mountain View, with 30 mm of rain.
Among the 498 cities listed in the United States, Mountain View ranks joint 222nd of 498 for the warmest October highs and joint 104th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Mountain View is 1.6°C warmer than that mean.
From October to November, average highs fall by 5.3°C to 17.7°C, and monthly rainfall rises from 23 mm to 43 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mountain View climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.5°C6.6°C | 6.6°C | 91 | 8.9 | 9.910 h |
| February | 15.3°C7.4°C | 7.4°C | 96 | 9.1 | 10.811 h |
| March | 16.7°C8.5°C | 8.5°C | 75 | 9.1 | 11.912 h |
| April | 18.3°C9.3°C | 9.3°C | 40 | 5.7 | 13.113 h |
| May | 20.8°C10.9°C | 10.9°C | 19 | 3.4 | 14.214 h |
| June | 23.9°C12.7°C | 12.7°C | 4.0 | 0.9 | 14.715 h |
| July | 26.0°C14.4°C | 14.4°C | 0.9 | 0.2 | 14.514 h |
| August | 26.3°C14.8°C | 14.8°C | 1.0 | 0.2 | 13.614 h |
| September | 26.1°C15.0°C | 15.0°C | 1.9 | 0.4 | 12.512 h |
| October, selected | 23.0°C13.3°C | 13.3°C | 23 | 2.9 | 11.311 h |
| November | 17.7°C9.9°C | 9.9°C | 43 | 5.7 | 10.210 h |
| December | 14.2°C7.1°C | 7.1°C | 83 | 8.9 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Sunnyvale in OctoberUnited States · 5 kmHigh 23.3°C · Low 13.3°C · 30 mm rain
- Milpitas in OctoberUnited States · 16 kmHigh 24.1°C · Low 13.8°C · 23 mm rain
- Redwood City in OctoberUnited States · 17 kmHigh 22.1°C · Low 13.1°C · 23 mm rain
- San Jose in OctoberUnited States · 17 kmHigh 24.1°C · Low 13.4°C · 30 mm rain
- Fremont in OctoberUnited States · 20 kmHigh 23.5°C · Low 13.4°C · 23 mm rain
- Union City in OctoberUnited States · 24 kmHigh 23.7°C · Low 13.1°C · 23 mm rain
- San Mateo in OctoberUnited States · 29 kmHigh 21.7°C · Low 12.9°C · 23 mm rain
- Hayward in OctoberUnited States · 31 kmHigh 23.2°C · Low 12.5°C · 21 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Mountain View) is explained once on the Mountain View year overview and on the Sources, method and limits page.
Fremont, Milpitas and Union City lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.