Cupertino (CA) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Cupertino

Cupertino average temperature chart (Celsius) Cupertino average temperature chart (Fahrenheit)
Average monthly temperatures in Cupertino (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.1 14.6 15.1 17 19.4 22.2 24 24.3 24 21.2 16.2 12.8
°F 55.5 58.3 59.3 62.6 66.9 72 75.3 75.7 75.2 70.2 61.1 55.1

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Cupertino monthly rainfall chart (mm) Cupertino monthly rainfall chart (inches)
Average monthly rainfall in Cupertino (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 156 124 115 56 12 5 3 4 9 40 109 123
inches 6.1 4.9 4.5 2.2 0.5 0.2 0.1 0.1 0.4 1.6 4.3 4.8
Rainy days 10 9 10 6 3 1 1 1 2 4 8 9

Average annual rainfall in Cupertino: 668.867mm (263.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Cupertino

Cupertino average daily sunshine chart
Average daily sunshine Cupertino
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.3 8 9.4 11.1 11.6 11.7 11.5 10.6 10.1 9 6.5 5.6

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Cupertino average minimum / maximum temperatures (Celsius) Cupertino average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Cupertino (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.9 4.4 4.8 5.5 7.5 9.7 11.1 11.4 10.7 8.3 5.2 3
Max °C 13.3 14.9 15.4 17.3 19.7 22.6 24.4 24.6 24.3 21.6 16.5 13.1
Min °F 37.2 39.8 40.6 41.9 45.5 49.4 51.9 52.5 51.3 46.9 41.3 37.3
Max °F 46.6 49.3 50.2 52.5 56.5 61 63.9 64.4 63.5 58.8 51.4 46.4

Sea temperature

The graph below shows the average sea temperature.

Cupertino average sea temperature chart (Celsius) Cupertino average sea temperature chart (Fahrenheit)
Average sea temperature around Cupertino in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.4 12.2 12.2 11.8 11.8 12.2 13.1 14 14.4 14.2 13.6 12.7
°F 54.2 54 53.9 53.3 53.2 53.9 55.5 57.2 57.9 57.6 56.4 54.9

Wind speed

The graph below shows the average wind speed.

Cupertino average winspeed by month (km/h) Cupertino average winspeed by month (mph)
Average wind speed in Cupertino (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 14 17 18 20 19 19 17 16 14 13 12
mph 8 9 10 11 12 12 12 11 10 9 8 8

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Cupertino relative humidity averages
Average relative humidity in Cupertino
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 76% 72% 69% 67% 67% 68% 70% 69% 70% 76% 79%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Cupertino weather stats

Cupertino weather statistics
Hottest month: August 24.3°C 75.7°F
Driest month: July 3mm 0.1ins
Sunniest month: April 11.1hrs
Coldest month: December 12.8°C 55°F
Wettest month: January 156mm 6.1ins
Warmest sea: September 14.4°C 57.9°F
Map showing location of Cupertino (37.323, -122.03218) Cupertino map pin © Google

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