Union City, California gets 17 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Union City 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 Union City. The US average is 205 sunny days.
Union City gets some kind of precipitation, on average, 64 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 76 degrees
Winter Low: the January low is 42
Rain: averages 17 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Union City is 8.8 (10=best), which means it is more comfortable than most places in California.
9.8 / 7.5
Summer / Winter
August, July and September are the most pleasant months in Union City, while January and December are the least comfortable months.