It was a little bit of a weather whiplash over the weekend with temps bouncing from the 70s and 80s Saturday to the mid to upper 90s Sunday as the high humidity blasted back in here. We’ve now had a total of 16 days above 90 in Boston this year. The record is 30, set back in 1983.  Not only did we have the heat, Saturday night was quite the light show as powerful storms produced continuous lightning and heavy rain, especially near/outside 495. Even Saturday afternoon and late Sunday featured a few additional storms. In terms of the rainfall department, we’ve had some help. While not all of us have seen a solid soaking rain, there have been many towns across New England that have picked up beneficial rains with near and outside 495 the winners (2-5″ over last 5 days and near Boston and through much Southeast Mass, the losers (Under 1″).

Today, we won’t add to these rain totals as highs top off in the upper 80s and lower 90s.  It’s not as hot as yesterday and the humidity won’t be as high with dewpoints running in the lower 60s vs. the 70s that we’ve seen. Expect afternoon seabreezes kicking in, so the coastline will be the place to be to beat the heat as upper 80s are knocked down in the lower 80s.

While today is storm free, tomorrow is not. A returning warm front tomorrow eventually leads to higher humidity and a higher risk of showers and storms. Most of the storms are in the afternoon and evening. They’ll be scattered, so not all towns get hit. The atmosphere tomorrow will be loaded with water vapor, so the towns that get hit will likely see localized downpours.  Frequent lightning is also likely in these storms and a couple of the stronger storms may produce damaging wind gusts.  Overall, something to keep an eye on tomorrow.

A cool front may spark an early shower or storm Wednesday and isolated storms are possible Thursday afternoon.  The pattern features more dry times Friday-Weekend as temps top off in the 80s, so more seasonable.


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