Temperatures and heat indices this weekend will be the highest of the year so far. The National Weather Service has issued a Heat Advisory for Cape May, Atlantic and Cumberland Counties today through 8pm tonight. An excessive heat watch will be in effect from Saturday afternoon through Sunday evening. Maximum heat index values of 105 to 110 degrees are expected today and Sunday, and 110 to 115 degrees on Saturday. This current heatwave is expected to last until Monday, when a cold front moves through the area.