David Epstein: What to expect from this weekend’s weather

"I'd actually rank Saturday up there as one of the top five days of the entire summer."

DENNIS, MA - 07/02/2018 A family walks to Haigus Beach to spend the day at the shore to enjoy the mild weather in the days leading up to the Fourth of July. Erin Clark for the Boston Globe
A family walks to Haigis Beach in Dennis earlier this week. –Erin Clark for the Boston Globe

It’s been a long haul with the heat and humidity, but it’s all coming to an end Friday, with showers and thunderstorms throughout the first part of the day winding down during the afternoon — except over Cape Cod, where they’ll probably linger into the evening.

The rain will be particularly heavy over Eastern Massachusetts, where there could be some street flooding. On Thursday, one thunderstorm around the Deerfield area brought 3 inches of rain in a very short period of time.

These showers mark the leading edge of dryer and cooler air, which will be with us for the entire weekend. Temperatures won’t be cool, but, with the low levels of humidity and readings well under 90 degrees, it’s going to feel fantastic. I’d actually rank Saturday up there as one of the top five days of the entire summer, with nearly complete sunshine, low humidity, and temperatures in the 70s to nearing 80.

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On Sunday, look for readings to be in the low to mid 80s, but humidity will continue on the comfortable side. Sunday is actually going to be a great beach day, with plenty of sunshine.

You can expect similar weather in Maine, New Hampshire, and Vermont this weekend. There will likely be some 40-degree readings in the colder spots up there Sunday morning.

More heat

Next week will feature temperatures getting back close to 90. However, I don’t see the extreme levels of humidity, nor does this bout of heat look to last as long.

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