You might spend a lot of your vacation inside, but if you're planning to venture beyond the casino, looking at local weather trends is a good idea. The hottest months are usually August and June with an average temp of 92°F, while the coldest months are January and February with an average of 65°F. From January through March, the daytime average is 87°F and the nighttime average is 50°F. Between April and June, temperatures average 106°F during the day and 67°F at night. July through September averages 106°F during the day and 76°F at night. In October-December, the average temperature is 97°F during the day and 53°F at night.