October weather forecast
Cupertino, CA

Weather in October

October, the same as September, in Cupertino, California, is another pleasant autumn month, with average temperature ranging between max 71.6°F (22°C) and min 53.8°F (12.1°C).

Temperature

In Cupertino, the average high-temperature marginally drops, from a moderately hot 77.5°F (25.3°C) in September, to a pleasant 71.6°F (22°C). The average low-temperature, in October, is 53.8°F (12.1°C).

Humidity

July, September and October, with an average relative humidity of 64%, are the least humid months in Cupertino, California.

Rainfall

In Cupertino, it is raining for 3 days, with typically 0.2" (5mm) of accumulated precipitation. Throughout the year, there are 53.6 rainfall days, and 5.39" (137mm) of precipitation is accumulated.

Daylight

In Cupertino, the average length of the day is 11.2h.

Sunshine

In October, the average sunshine in Cupertino is 7.1h.

UV index

In Cupertino, California, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: In October, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What are the least humid months in Cupertino?

July, September and October, with an average relative humidity of 64%, are the least humid months in Cupertino.

What is the average humidity in October in Cupertino?

In Cupertino, California, the average relative humidity in October is 64%.

How many days does it rain in October in Cupertino?

In Cupertino, California, in October, during 3 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

How many hours of daylight does Cupertino have in October?

The average length of the day in October is 11.2h.

How many hours of sunshine does Cupertino have in October?

In Cupertino, the average sunshine in October is 7.1h.

What is the UV index reading in October in Cupertino?

The average daily maximum UV index in October in Cupertino, California, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in October
Cupertino, CA

Average temperature in October - Cupertino, CA
  • Average high temperature in October: 71.6°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in October: 53.8°F

The month with the highest average low temperature is August (56.1°F).
The coldest months (with the lowest average low temperature) are February and March (44.2°F).

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Average pressure in October
Cupertino, CA

Average pressure in October - Cupertino, CA
  • Average pressure in October: 29.98"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.92").

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Average wind speed in October
Cupertino, CA

Average wind speed in October - Cupertino, CA
  • Average wind speed in October: 4.7mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in October
Cupertino, CA

Average humidity in October - Cupertino, CA
  • Average humidity in October: 64%

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are July, September and October (64%).

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Average rainfall in October
Cupertino, CA

Average rainfall in October - Cupertino, CA
  • Average rainfall in October: 0.2"

The wettest month (with the highest rainfall) is February (1.02").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in October
Cupertino, CA

Average rainfall days in October - Cupertino, CA
  • Average rainfall days in October: 3 days

The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in October /
Average sunshine in October
Cupertino, CA

Average daylight in October / Average sunshine in October - Cupertino, CA
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in October: 7.1h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in October
Cupertino, CA

Average sunshine days in October - Cupertino, CA
  • Average sunshine days in October: 26.7 days

The month with the most sunshine days is August (28.5 days).
Months with the least sunshine days are February and March (20.8 days).

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Average UV index in October
Cupertino, CA

Average UV index in October - Cupertino, CA
  • Average UV index in October: 5

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in October
Cupertino, CA

Average cloud cover in October - Cupertino, CA
  • Average cloud cover in October: 16

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in October
Cupertino, CA

Average visibility in October - Cupertino, CA
  • Average visibility in October: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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