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Super pleasant days lead to a showery weekend

Dave Hayes maintains a daily blog on Facebook (facebook.com/WesternMassWeather), where he produces hyper-local reports, answers questions, and keeps more than 25,000 followers informed and educated about the weather.

Good day to you! We just got through a blast of summer, with an official heat wave being recorded in portions of southern New England. Those types of temperatures are going away, at least for the next week.

We will have a pair of gorgeous days on Wednesday and Thursday. However, the Canadian high pressure system responsible for such sweetness is helping to kick the Bermuda High pressure system (the one responsible for our toasty early-week weather) further east and out into the Atlantic Ocean. This will introduce a new pattern, and one that will bring more rain, I’m afraid.

Let’s jump into the details.

* * *

For Wednesday and Thursday, Canadian high pressure builds in from the north, and it will be crisp and glorious. Expect sunshine, dry conditions, and high temperatures in the low to mid 70s and lows in the upper 40s to low 50s. Splendid would be a most apt and descriptive word for the next two days.

However, by Friday we are starting to see the large-scale pattern change. A large upper low pressure system is forecast to sit and spin over Hudson Bay, Canada. This will help to rotate a number of northern jet stream disturbances through southern Vermont, with the first one arriving by Friday morning. This storm will move east out of the Great Lakes, and float a warm front towards our region. The front will likely never make it to the north and east of us, so we will stay cool with highs in the upper 60s and showers developing. Some scattered thunderstorms are also possible into Friday night, when lows will drop into the upper 50s.

The Saturday-to-Tuesday time frame looks rather murky at the moment. The exact timing of additional low pressure and frontal systems is unclear. Highs will generally be in the 70s and lows near 60 degrees during this period. However, the warmest period looks to be Sunday into Monday when high temperatures will reach either side of 80 degrees. Scattered showers and thunderstorms are possible during this whole period with mostly cloudy conditions. Some sunshine should work back into the region by Tuesday.

Have a great week!

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Originally published in The Commons issue #412 (Wednesday, June 14, 2017).

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