Cupertino (CA) Weather and Climate: A Comprehensive Guide
The climate in Cupertino is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to mild in the cooler months.
It typically sees modest rainfall throughout the year.
Now, let’s explore all the climate details to give you a full picture.
Average maximum day and minimum night temperature
In Cupertino, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 28°C in July to a moderate 15°C in the coolest month, January.
Nights are cooler, with lows often dropping to around 5°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Cupertino typically sees modest rainfall throughout the year, with an average annual precipitation of 368 mm. The climate in Cupertino shows significant variation throughout the year. Expect moderate rainfall in December, with an average of 80 mm of precipitation over 12 rainy days. In contrast, July offers drier and sunnier days, with around 0.1 mm of rainfall over 0 rainy days. For more details, please visit our Cupertino Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Cupertino serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 10.8 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Cupertino.
The city experiences its highest humidity in January, reaching 80%. In June, the humidity drops to its lowest level at 71%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
broken clouds and no rain overcast and slight rain broken clouds and rainForecast for Cupertino (CA)
2 m/s
2 m/s
1 m/s
The best time of year to visit Cupertino in the United States of America
During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Yes, the months of May, June, July, August, September and October are very dry.
July has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 15°C.
December tops the wettest month list with 80 mm of rainfall.
July is the driest month with 0 mm of precipitation.
May is the sunniest month with an average of 324 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
