West Cornwall, PA has a humid continental climate with warm to hot summers and cold winters. The average summer temperatures range from the mid-60s to the upper 80s and winter temperatures often reach the mid-20s. Precipitation is plentiful throughout the year with an annual average of roughly 40 inches per year. The area also experiences some snowfall each winter which can be heavy at times and cause significant disruption to travel. Despite its typically cool temperatures, West Cornwall enjoys sunny days throughout the year and usually receives around 200 sunny days per year.
West Cornwall, Pennsylvania gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
West Cornwall averages 24 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 197 sunny days per year in West Cornwall. The US average is 205 sunny days.
West Cornwall gets some kind of precipitation, on average, 118 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 85 degrees
Winter Low: the January low is 21
Rain: averages 43 inches of rain a year
Snow: averages 24 inches of snow a year