Mercer, PA has a humid continental climate with cold winters and warm to hot summers. The average annual temperature is 50°F (10°C), while the average high temperature in the winter months is around 36°F (2.2°C) and the average high temperature in the summer months is around 79°F (26.1°C). Winters in Mercer, PA bring an average of 27 inches of snowfall each year, while summers see an average of 1 inch of rainfall per month. Summers tend to be humid and muggy due to its close proximity to Lake Erie, which helps keep temperatures mild even during the hottest parts of the year.
Mercer (zip 16137), Pennsylvania gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mercer (zip 16137) averages 45 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 160 sunny days per year in Mercer (zip 16137). The US average is 205 sunny days.
Mercer (zip 16137) gets some kind of precipitation, on average, 156 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 17
Rain: averages 42 inches of rain a year
Snow: averages 45 inches of snow a year