National Weather Service United States Department of Commerce

A weak front will move east thru northeast North Dakota and northwest Minnesota at the time of peak heating Friday. Thunderstorms are possible along this front, with isolated severe storm or two possible (level 1 out of 5). Main hazards are hail to golf balls and winds to 60 mph. Storms may struggle to form with this front though due to warm layer (cap) aloft.
After today, temperatures on their way up with highs in the mid 80s and into the 90s Friday & Saturday. Heat Indices and Wet Bulb Globe Temperatures may reach the hazardous range. Weak front will bring a chance for late afternoon and nighttime thunderstorms Friday, highest chances north.