Warmup to yield widespread 80s in northeastern US this weekend

By Alex Sosnowski, AccuWeather senior meteorologist
June 14, 2018, 5:28:53 AM EDT

A change in the weather pattern will allow 80-degree Fahrenheit weather to be experienced over a large part of the northeastern United States starting this weekend.

The pattern will be favorable for most warm-weather activities ranging from swimming to golfing or just walking.

A southward dip in the jet stream has allowed cool, dry air to pool in New England while also creating a highway for rain and thunderstorms to travel upon from the Midwest to the mid-Atlantic region in recent days.

This southward jet stream dip will linger into the end of the week.

Static US Late Week

"We expect the jet stream to bulge northward for a several-day period from the Great Lakes to the Northeast, starting this weekend," according to AccuWeather Lead Long-Range Meteorologist Paul Pastelok.

“The northward buldge will allow some of the warmth over the Central states to spill over into the Northeast," Pastelok said.

Static NE WarmUp

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The upcoming pattern should offer one of the longest stretches of 80-degree temperatures of the season so far. Even in portions of northern Maine, temperatures are likely to reach or exceed 80 during the pattern.

At the peak of the warmth, a few locations may top 90 on one or two days early next week.

The average high for the middle of June ranges from the lower 70s in northern New England to the middle 80s in southeastern Virginia.

While the upcoming pattern is conducive for widespread warmth, the pattern also favors cool sea breezes right along the coast.

"People heading to the beaches should not expect highs to be well into the 80s, but rather the upper 60s to the middle 70s in the pattern," according to AccuWeather Senior Meteorologist Brett Anderson.

Ocean water temperatures generally range from the lower 60s along the New England coast to the lower 70s along the Virginia coast.

With these water temperatures, bathers should be aware of the risks of cold water shock. Water temperatures of spring-fed streams and lakes may be much lower. Always swim at life-guard protected beaches or with supervision. Be sure to first test the water temperature before venturing out too far.

In general, drier weather will sweep into the eastern Great Lakes and the mid-Atlantic from Thursday to next Tuesday. However, there could be a couple of rounds of showers and thunderstorms.

New England has largely avoided rainfall in the past week but may have a round or two of showers.

The upcoming warm weather pattern is not likely to last through the end of June.

"We expect the jet stream to dip southward again during the middle days of next week, which will allow temperatures to trend downward," Pastelok said.

The orientation of the jet stream will determine if wet weather returns to the Ohio Valley and mid-Atlantic or is more liberally spread over the region.

Another pulse of warm weather may return prior to the end of June, Pastelok stated.

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