The climate is humid continental. Western or central Canada are the source region for arctic air masses which frequently invade the region in winter and occasionally in summer. Warm, tropical air, originating in the Gulf of Mexico, is the principal source of moisture, although the Great Lakes, particularly Lake Erie, are an important moisture source during late fall and winter. East Coast storms rarely affect this region. Very Warm, dry air from the southwestern United States occasionally moves over the area in summer.
Winters are generally cold and quite snowy.
During extremely cold periods, maximum temperatures may fail to reach 10 degrees. Mild, tropical air occasionally moves into the area in the winter, with temperatures in the 60's to near 70. At night, the mercury normally falls into the mid-teens. The lowest temperatures ever recorded at Corry was minus 30 degrees on February 9, 1934. Prevailing winds during the winter are generally from the west.