Good morning! A primarily west and southwesterly flow is expected today along with generally light winds, bringing a hot day to much of New England. Skies will be sunny for most in the region, and highs will range from the mid to upper 70s in northern Maine, to the lower 80s across a large portion of Vermont and much of northern New Hampshire, Northwest Maine, the Massachusetts South Coast, as well as the immediate coastline across much of the remainder of the area (including Portland). Temperatures either side of 80 will exist on Cape Cod and the MA Islands (including Block Island, RI). Middle 80s will prevail in the Burlington, Montpelier, and much of the Connecticut River area in Vermont, as well as much of southern and downeast Maine, with isolated upper 80s. Upper 80s will dominate in northwest Connecticut, western Massachusetts, as well as central and southwest New Hampshire and much of southwest Maine, where some lower 90s are possible. Lower 90s are likely throughout eastern and central Massachusetts, south central and southeast New Hampshire, the Connecticut River Valley of CT and MA (including Hartford) and as noted, some 90 readings are possible into southwest and even west central Maine. Middle 80s to 90 will prevail in the immediate Boston area as well. Lower to maybe even mid 90s are forecast in the Merrimack River Valley between Concord, NH and Lawrence, MA, also including Manchester, Nashua, and Lowell. The models suck with this place, so instead of digging all day, I went to see what NWS Gray thinks Mount Washington may even reach the middle 60s, which is impressive considering the average high for September is in the mid-to-upper 60s.
(Anyone who has seen model temp maps know that they don’t handle Mount Washington well, at least not in early September. The all-time record at Mt. Washington is 72, in June 2003 and August 1975 per the observatory, and the only model remotely close to the reasonable mid-60s temp for today is the Hires NAM at 73. Other guidance has it around 80. This is why a human element is crucial to meteorology.)
Dewpoints will be in the 60s throughout New England.
Have a good day!