November Weather in Portola Valley, United States

Last updated: June 24, 2025

In Portola Valley, United States, the average temperature in November is 13°C (56°F), with a range that can dip to a minimum of 4°C (39°F) and rise to a pleasant maximum of 27°C (80°F). Expect about 47 mm (1.9 in) of precipitation spread over 5 days, and enjoy the refreshing average humidity level of 78%.

November Temperature in Portola Valley

In November in Portola Valley, the average temperature is 13°C (56°F). Maximum temperatures can reach 27°C (80°F), while the minimum can drop as low as 4°C (39°F). This moderate climate makes Portola Valley an ideal destination for travelers who enjoy pleasant outdoor activities.

November Weather in Portola Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Portola Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portola Valley, November typically has an average temperature of 13°C (56°F), with highs reaching up to 27°C (80°F) and lows dropping to around 4°C (39°F).

Data source: Temperature data for Portola Valley generated using information from the Copernicus Climate Change Service.

November Precipitation in Portola Valley

In Portola Valley in November, the precipitation amount is 47 mm (1.9 in) spread over a duration of 5 days.

November Precipitation Trends in Portola Valley

The chart displays monthly precipitation patterns in Portola Valley, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Portola Valley, November typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

November Humidity in Portola Valley

In Portola Valley in November, humidity is 78%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities a bit uncomfortable, creating a heavy atmosphere that clings to the skin, urging travelers to dress in layers for warmth and comfort.

November Average Humidity in Portola Valley

This chart illustrates the average monthly humidity levels in Portola Valley, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Portola Valley is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Portola Valley

In Portola Valley in November, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Portola Valley for better planning.

Maximum UV Index Levels in Portola Valley for November

The chart shows the monthly maximum UV Index (UVI) for Portola Valley in November, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In November, the maximum UV index in Portola Valley typically reaches 4, which falls under the moderate exposure category.

Data source: Portola Valley November UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How November Weather in Portola Valley Compares to Other Months

Weather in Portola Valley varies notably across the year, with each month offering distinct climate conditions. This page compares November’s weather to other months in Portola Valley, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Portola Valley, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	105 mm (4.1 inches)	82%	moderate
February Weather	11°C (53°F)	100 mm (3.9 inches)	84%	moderate
March Weather	12°C (54°F)	86 mm (3.4 inches)	82%	very high
April Weather	13°C (57°F)	33 mm (1.3 inches)	78%	very high
May Weather	15°C (59°F)	24 mm (0.9 inches)	71%	very high
June Weather	17°C (63°F)	2 mm (0.1 inches)	64%	extreme
July Weather	17°C (63°F)	0 mm (0.0 inches)	58%	extreme
August Weather	18°C (65°F)	0 mm (0.0 inches)	54%	very high
September Weather	18°C (66°F)	2 mm (0.1 inches)	55%	very high
October Weather	17°C (63°F)	24 mm (0.9 inches)	62%	high
November Weather	13°C (56°F)	47 mm (1.9 inches)	78%	moderate
December Weather	11°C (52°F)	88 mm (3.5 inches)	80%	moderate