Bangor, Maine – Much of Maine will swelter under dangerous heat starting Monday morning, with heat index values pushing close to 100 degrees in some northern and central communities. The National Weather Service warns conditions could cause heat-related illnesses, especially for those working outdoors or without access to cooling.
According to the NWS offices in Caribou and Gray, heat advisories cover areas from Aroostook County down through Penobscot, Hancock, and Washington counties, as well as portions of southern and western Maine and central and southern New Hampshire. Advisories begin as early as 8 a.m. Monday in the north and 11 a.m. in the south, lasting until 8 p.m. Tuesday. Overnight lows in northern Maine will stay muggy, limiting relief from the daytime heat.
Residents are urged to stay hydrated, avoid strenuous activity during the hottest hours, and check on vulnerable neighbors. Air-conditioned spaces, such as libraries and cooling centers, can provide relief. Pets and children should never be left in vehicles, even briefly.
Temperatures will remain high Wednesday before a cold front offers cooler conditions later in the week.
