Weather will likely play an important role when you plan your trip to New Cairo, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 86°F, while the coldest months are January and February with an average of 61°F. From January through March, the daytime average is 77°F and the nighttime average is 50°F. Between April and June, temperatures average 98°F during the day and 60°F at night. July through September averages 101°F during the day and 72°F at night. In October-December, the average temperature is 88°F during the day and 54°F at night.