Thursday: We're off to a cool start with temperatures ranging from the mid-40s to low 50s and areas of dense fog. Fog will gradually lift by around 8 or 9 a.m., then skies will remain mostly sunny. An east wind continues to limit temperatures near Lake Superior, but mid to upper 70s will be achieved inland. The area of high pressure responsible for this quiet stretch slides east overnight as a warm front approaches from the west. This will result in increasing clouds and thunderstorm potential for western Minnesota Friday morning.
Friday: The showers and thunderstorms will run out of steam as they move eastward across the Northland with most staying dry from this round. The front will otherwise be responsible for a spike in humidity and highs ranging from the low to upper 80s.
Saturday: The widespread chance for strong thunderstorms arrives from the west Saturday afternoon and evening with damaging winds and large hail possible, along with heavy rain and localized flooding. It will be hot and humid with a high of 86.