Metro Boston, North Shore and Metro West: One year ago this month we were sweltering in 90 plus degree heat through most of the first three weeks of the month. Boston recorded temperatures of 90 degrees or better 12 times in the first 20 days of July 2013 with a stretch of 7 consecutive days of over 90 degree temperatures from the 14th to the 20th, hitting 99 on the 19th. Thereafter, Boston only reached 90 degrees one more time and that was on September 11th.
Although we have had some very warm to hot patches of weather this season we simply have not had any of those long duration periods of heat that is more reminiscent of the dog days of Summer. Although we will once again have another couple of days of heat this week we return to very comfortable weather by the end of the work week and most likely into the start of next weekend.
The disturbance that skirted offshore on Sunday is moving away and this will allow for clearing skies over the area. With high pressure building in and sitting overhead the next couple of days we can again look forward to fair skies and milder temperatures. Although a light ocean breeze continues to persist on Monday temperatures will climb into the low 80s across the interior, mid to upper 70s throughout the coastal plain. Early morning clouds, patchy fog in spots, give way to sunshine during the morning.
Skies remain fair on Monday night with just a few clouds around. Low temperatures in the 60s with a light south breeze.
Then on Tuesday the heat gets turned up and the humidity will begin to increase during the day. High pressure moves offshore and south of us and this will provide the south to southwest flow that brings the heat and humidity our way through Wednesday. Temperatures climb into the mid to upper 80s Tuesday across the area. A good amount of sunshine and rising humidity will make for an uncomfortable day if you are working outdoors and in the direct sun. There is the chance of early morning cloudiness and patchy fog once again.
Crank the air conditioners up for sleeping on Tuesday night because it will be warm and humid with low temperatures around 70 degrees. Light southwest winds with a partly cloudy sky through the overnight.
A cold front approaches Wednesday and ahead of the front it remains quite warm and humid. There is a chance of afternoon showers and thunderstorms developing which may linger into the evening. Highs well into the 80s with a few neighborhoods possibly reaching 90 degrees, especially across the Merrimack Valley.
The showers and storm threat continues into Wednesday night. Lows a muggy 70 degrees or so, perhaps near 75 in Boston.
The cold front pushes through overnight or early Thursday morning and high pressure once again builds in for the latter portion of the week. Thursday will be a day of transition as skies begin to improve and the chance for a lingering shower or storm lessens during the day. Not as warm and slowly turning less humid on Thursday with the highs in the low to mid 80s.
Back to lower humidity and very pleasant conditions Friday and Saturday. Sunshine with highs in the upper 70s to low 80s. Lows in the upper 50s to low 60s.
North Shore beach outlook:
Monday: Clouds and areas of patchy fog early, otherwise sunshine and pleasant. High temperatures in the low to mid 70s. Onshore breeze of 5 to 15 mph. UV Index high. Water temperatures in the mid to upper 60s. High tide about 7:30 to 8:00 in the morning which means low tide in the early afternoon.