Because Grand Canyon North Rim is higher, the weather is cooler than the South Rim. Daytime temperatures in summer are usually in the 70s, while nights cool down to the 40s. In the winter, temperatures can often fall below freezing, and the road is closed due to heavy snowfall in late fall until early spring.
Temperatures in the inner canyon, however, are still hot. Hiking from the North Rim to the bottom of the canyon is even more difficult because of the added elevation. Inner gorge temperatures are usually over 100 degrees in the summertime, and can drop as much as 40 degrees or more overnight.