Upper St. Clair Township, PA has a humid continental climate with hot and humid summers and cold winters. The average high temperature in the summer months is around 82°F (27°C) and the average low is 64°F (17°C). In the winter months, the average high temperature is around 40°F (4°C) and the average low temperature is 22°F (-5°C). Precipitation averages around 39 inches annually, with most of it falling in the spring and summer months. There are also occasional snowfalls during the winter months.
Upper St. Clair, Pennsylvania gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Upper St. Clair averages 30 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 162 sunny days per year in Upper St. Clair. The US average is 205 sunny days.
Upper St. Clair gets some kind of precipitation, on average, 147 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 82 degrees
Winter Low: the January low is 20
Rain: averages 39 inches of rain a year
Snow: averages 30 inches of snow a year