WINONA, Minn. – After weeks of pleasantly mild August weather, expect a muggy scorcher. Temperatures were expected into the 90s on Monday. Cloud cover likely will keep the highs short of records but be like a tent trapping humidity underneath. The heat index could be in the upper 90s. Real meteorological excitement could come in the evening — and not for the better. A cold front was forecast to move in and collide with the day’s hot and wet air. This could lead to Level 2 and Level 3 severe weather, possibly with large hail, damaging winds, amd tornados.