Rocklin, CA has a Mediterranean climate characterized by dry, hot summers and cool, wet winters. The average summer temperature is around 77 degrees Fahrenheit while the winter temperatures tend to stay between 40 and 50 degrees. Rainfall is generally light throughout the year with the wettest months being December through April. Snowfall is rare but it does occur from time to time in the colder months. Overall, Rocklin enjoys mild weather conditions that make it an ideal place for outdoor activities all year round.
Rocklin, California gets 21 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rocklin averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 255 sunny days per year in Rocklin. The US average is 205 sunny days.
Rocklin gets some kind of precipitation, on average, 60 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.
Summer High: the July high is around 94 degrees
Winter Low: the January low is 39
Rain: averages 21 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Rocklin is 8.2 (10=best), which means it is about average compared to other places in California.
8.2 / 7.2
Summer / Winter
May, October and April are the most pleasant months in Rocklin, while January and December are the least comfortable months.