The climate in 91770 Rosemead, CA is typical of a Mediterranean climate, featuring warm and dry summers and mild wet winters. The average annual temperature is around 70°F (21°C), with an average high of 87°F (31°C) and an average low of 55°F (13°C). During the summer months, temperatures can reach up to 100°F (38°C), while during the winter months, temperatures can drop to as low as 40°F (4°C). On average, there are around 280 sunny days a year in Rosemead, which makes it a great place to visit or live all throughout the year.
Rosemead (zip 91770), California gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rosemead (zip 91770) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 283 sunny days per year in Rosemead (zip 91770). The US average is 205 sunny days.
Rosemead (zip 91770) gets some kind of precipitation, on average, 31 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 86 degrees
Winter Low: the January low is 47
Rain: averages 16 inches of rain a year
Snow: averages 0 inches of snow a year