Cupertino, CA enjoys a mild Mediterranean climate with warm summers and mild winters. The average high temperature in the summer months is around 80°F, while the average low is around 51°F. The winter months are generally sunny and dry, with an average of 15 inches of rain annually. Temperatures typically remain above freezing during the winter months, rarely dropping below 40°F. This combined with low humidity makes for a pleasant climate year round.
Cupertino, California gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Cupertino averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 265 sunny days per year in Cupertino. The US average is 205 sunny days.
Cupertino gets some kind of precipitation, on average, 61 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 41
Rain: averages 18 inches of rain a year
Snow: averages 0 inches of snow a year