The climate in 91786 Upland, CA is warm and dry all year round due to its location in the Inland Empire region of Southern California. Summers are hot with temperatures often reaching into the 90s during the day and cooling down at night to the 60s or 70s. Winters are usually mild with daytime temperatures rarely dropping below 50 degrees and nighttime temperatures usually remaining in the 40s. Rainfall is minimal throughout the year with some months having no measurable precipitation at all.
Upland (zip 91786), California gets 21 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Upland (zip 91786) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 282 sunny days per year in Upland (zip 91786). The US average is 205 sunny days.
Upland (zip 91786) gets some kind of precipitation, on average, 32 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 92 degrees
Winter Low: the January low is 43
Rain: averages 21 inches of rain a year
Snow: averages 0 inches of snow a year