In 2012, August finally cooled down, but I remember May through July being a wall-to-wall torches as well while April was fairly pedestrian. If I'm not mistaken, 2012 ended up being the warmest Summer on record in Detroit at the time, even surpassing 2011.
Detroit was closer to the NE edge of the ridge as well, so we also had more severe episodes than maybe your area (although the derecho was a wide miss to the south).