You'll likely spend much of your trip indoors, but if you want to see more of the area, taking a look at local weather data can help you. The hottest months are usually July and August with an average temp of 68°F, while the coldest months are February and January with an average of 31°F. The snowiest months in Erie are January, November, March, and October, with each month seeing an average of 6 inches of snowfall.