 The National Weather Service has issued a heat advisory for York County, Interior Cumberland County, and Oxford County. Most places could see a heat index of 100 degrees today, but it will feel like it's in the 90s pretty much everywhere else, and it will be in the 90s in some places in Maine with sunny skies, just a slight chance of an afternoon shower or thunderstorm. Tomorrow, another partly sunny, hot, humid day, highs from the mid-80s to the mid-90s around the state.