When you’re traveling with pets, keeping track of the weather can make the trip safe and fun for everyone. The hottest months are usually July and August with an average temp of 87°F, while the coldest months are January and December with an average of 31°F. From January through March, the daytime average is 60°F and the nighttime average is 17°F. Between April and June, temperatures average 96°F during the day and 56°F at night. July through September averages 100°F during the day and 68°F at night. In October-December, the average temperature is 69°F during the day and 20°F at night.