Climate change is causing the weather to get more erratic across the U.S. Rain storms that used to happen once in a lifetime now occur every few years. Heat waves are hotter, and last longer. Hurricanes come ashore with more powerful winds and storm surge.

Storms move through overnight, mostly impacting southern Minnesota. They should weaken as they head east. Friday will see humidity and temperatures in the high 80s. That humidity will carry through for the next several days.