Dangerously hot day expected in Northern Seacoast

Most of Maine and New Hampshire will escape today's hottest temperatures, predicted to be the most severe heat of the summer thus far, but here in the Northern Seacoast, not so much.

Real feel temperatures in Rochester, Milton and Lebanon are expected to be as high as 105.

Rochester announced this morning that the city library on South Main Street would be open as a cooling station.

Meanwhile, a Lebanon Fire staff member said today no special plans had been announced, and Milton officials were not immediately available.

"While it will not be as hot as the heat wave from late July, humidity levels may be higher and will make the air feel very uncomfortable for some people," according to AccuWeather Long-Range Meteorologist Edward Vallee.

The combination of heat, high humidity, sunshine and other conditions will push AccuWeather Real Feel temperatures above 100 in much of the Northeast during the second half of this week.

A large swath of Maine stretching northeast of Lebanon and a smaller patch in New Hampshire northwest of Rochester will see Real Feel temps as high as 100, while the rest of the two states including the White Mountains and Downeast will escape the severest heat and humidity.

Actual temperatures will climb only a few degrees in most coastal areas, but more humid air will make it feel significantly hotter. High temperatures will trend upward from the upper 80s to the lower to middle 90s in much of the Interstate 95 corridor.

The Appalachians and lower Great Lakes region, which have been enjoying warm days with low humidity and cool nights, will have the most noticeable change. Highs in the lower to middle 80s from Monday will be replaced with highs in the upper 80s to the lower 90s on Thursday and Friday.

The biggest change will be felt at night.

"Temperatures in some of the urban areas of the major cities will fail to drop below 80," according to AccuWeather Meteorologist Jim Andrews.

"This spell of heat and high humidity will be very tough for people who do not have air conditioning to sleep very well at night," Andrews said.

In the Appalachians, low temperatures in the upper 50s to near 60 from the start of the week will be exchanged for lows in the upper 60s to the lower 70s.

Those partaking in vigorous physical activity or manual labor will need to increase their fluid intake and adjust their schedule to avoid the hottest part of the day, the afternoon and early evening.

Expect little heat relief from the wind into the weekend, as no breeze will stir, except at the beach or in the vicinity of thunderstorms.

Accompanying the hot, humid air will be an uptick in shower and thunderstorm activity.

Accuweather reports contributed to this article.