Houston experiences a lot of extreme weather but it also just generally known for it raining often. whether it is just some excessive rain or a natural disaster: Houston floods quite severely.
There is 49.8 inches (1,260 mm) of rainfall annually.
Many sections of the city have a high risk of local flooding. This is due to the overall flat landscape, the city sitting on top of primarily low-absorbency clay-silt prairie soils and inadequate infrastructure/lack of zoning.
Be aware of the weather when planning, leading up to and during your trip. You mustn’t live in fear but be prepared as change happens fast.