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Boston weather: Another comfortable August day ahead

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Metro Boston, North Shore and Metro West: So far this has not been your typical August as temperatures have been running about 1.6 degrees below normal with low humidity and comfortable conditions most days. This past weekend was a perfect example of this with highs running near normal, low humidity and cool comfortable sleeping weather at night. If your seeking some sizzling summertime heat it will not happen this week as we remain in a pattern that keeps temperatures near seasonal early in the week, followed by even cooler readings mid week before temperatures rebound some by late week.

High pressure remains in control early this week. Expect another day of sunny skies with patchy afternoon clouds on Monday. High temperatures will be similar to readings over the weekend with highs 78 to 84 degrees, coolest on the coast where a light onshore breeze once again develops around midday. Fair skies remain in place Monday night with temperatures cooling to 60 to 66. Winds stay light from the south.

Tuesday sees the high pressure system slide offshore. We should squeeze out another dry day with a good amount of sunshine, before conditions turn wet overnight. With dew points inching up into the 60s it becomes a bit more humid through the day. Highs on Tuesday 78 to 84 with south winds of 8 to 15 mph.

Low pressure in the Great Lakes advances slowly eastward with another low riding up the East Coast Tuesday night. This coastal low will be the big weather story for mid week. By Wednesday morning low pressure is expected to be positioned near Long Island and is forecast to be a potent system for this time of year. Clouds fill in Tuesday night and showers probably break out overnight. Lows 64 to 68. Winds turn gusty from the southeast.

Wednesday is a wet day with numerous showers and thunderstorms as the low tracks across southern New England and into Maine through the day. Severe weather is a distinct possibility Wednesday and will be monitored closely over the next day or so, but do be aware that conditions look ripe on Wednesday for severe weather in the area. It turns uncomfortably humid as well with a moisture laden air mass in place. The activity begins to diminish by evening with skies remaining mostly cloudy early, followed by clearing late. Highs only 70 to 76 Wednesday, lows 62 to 66 Wednesday night.

There is the potential of 1 to 3 inches of rain Wednesday which may cause flooding of low lying areas and urban street flooding as well. Gusty southeast winds will bring a windswept rain at times. Further, with astronomically high tides Wednesday there is the chance for minor coastal flooding at time of high tide.

Thursday and Friday turn drier, but with a disturbance in the upper levels and chilly air above we probably see afternoon clouds build in each afternoon with a chance of a shower. Temperatures stay cool, highs 70 to 76 Thursday, then 74 to 80 Friday. Overnight lows a very comfortable 56 to 62.

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