Climate Similar to most of Southern Ontario, Cornwall has a humid continental climate (Köppen: Dfa) with cold, snowy winters and warm, humid summers. Precipitation is significant year-round, although the winter months are generally drier than the summer months.
Climate Similar to most of Southern Ontario, Cornwall has a humid continental climate (Köppen: Dfa) with cold snowy winters and warm, humid summers. Precipitation is significant year-round, although the winter months are generally drier than the summer months.