Why is it sultry before the rainstorm?

Why is it sultry before a thunderstorm?

Will there be a thunderstorm when the weather is sultry? Yes, mostly. Because of the high ground temperature and high humidity in the atmosphere, thunderstorms may occur. The atmosphere is hot and full of water vapor. This means that when the water on the ground is not easy to evaporate and the sweat on people is not easy to dry, we will feel bored. So sultry weather is a sign of high water vapor and temperature in the atmosphere, and it is also a sign of thunderstorm.