A Heat Advisory remains in effect through tonight for Baraga, Dickinson, Florence, Gogebic, Houghton, Iron, Marinette, Marquette, Menominee and Ontonagon counties. High reached into the 90s for many locations Monday afternoon, with heat index values over 100 degrees. Many areas will not see lows drop below 70 degrees Monday night, with heat indices remaining in the 80s, making for very uncomfortable sleeping weather.