Rooftop tents are made to withstand certain weather conditions. However, if you are in an environment of extreme heat, rain, or snow, consider checking the materials used in the construction process. There are certain materials like the 150T rip-stop polyester designed to withstand heavy winds and rain. Thermal reflective materials increase the heat retention on the tent, making them ideal for tents made to resist cold weather. Besides, you could even simply use a tent cover to withstand rain and excess moisture.