Weekly Outlook: July 5-11, 2021

After a chilly and wet weekend, heat and humidity are set to return to the region.

Our pesky upper-level low pressure area finally pulls away and high pressure builds in today, bringing some sunshine and warmer temperatures back into the region. A warm front will move through tonight, and it may produce a few showers and thunderstorms, but the more noticeable impact will be an increase in humidity once again. This sets up a hot and humid day on Tuesday. Many locations may top 90, and heat indices will be well into the 90s across the region. A weak boundary will move in during the afternoon though, and this may trigger showers and thunderstorms, some of which could become strong to severe. Any storms that do form could produce gusty winds, frequent lightning, and heavy downpours. If you’ve got outdoor plans for Tuesday afternoon and evening, keep an eye to the sky and on the radar, and be prepared to head indoors.

Strong to severe thunderstorms may cross the region Tuesday afternoon. Loop provided by WeatherBell.

Wednesday looks to be very warm and humid once again, but temperatures will depend on how much cloud cover there is. A cold front will be approaching from the north and west, and this will produce another round of showers and thunderstorms during the afternoon and evening. This is where forecast confidence drops significantly. That front will eventually stall out near or just south of the region. Where it stalls out will have a big impact on Thursday temperatures, with warm and humid air still in place to the south, but cooler air to the north. Complicating things is the fact that a wave of low pressure may ride along the front, bringing in some rain once again.

The models have a wide variety of ideas about Thursday’s temperatures. Images provided by Pivotal Weather.

If Thursday wasn’t complicated enough, on Friday we may have to deal with Elsa or its remains. We’re not expecting Elsa to make a direct hit on New England. It should be heading out to sea well to the south. However, it may be close enough to interact with that frontal boundary, and send more rain into the region. It also may produce some gusty winds across the Cape and Islands, and some rough seas, especially along the South Coast.

Elsa or its remains should stay pass south of New England. Image provided by Weathermodels.com

We should dry out on Saturday with a warm day expected, but humidity will return on Sunday, along with the chance for more showers and thunderstorms as another frontal boundary approaches the region.

Monday: Becoming partly to mostly sunny. High 71-78.

Monday night: Partly cloudy, chance for a few showers or thunderstorms. Low 60-67.

Tuesday: Partly sunny, breezy at times, more humid, showers and thunderstorms are possible during the afternoon, some may be strong to severe. High 84-91, cooler along the South Coast.

Tuesday night: Any showers or storms end in the evening, otherwise partly cloudy. Low 65-72.

Wednesday: A mix of sun and clouds, humid, showers and thunderstorms possible during the afternoon and evening. High 84-91, cooler along the South Coast.

Thursday: Partly to mostly cloudy with a chance for rain or showers. High 76-83, possibly cooler across southern New Hampshire and northern Massachusetts.

Friday: Plenty of clouds, more rain or showers possible. High 77-84.

Saturday: Becoming partly sunny. High 77-84.

Sunday: Intervals of clouds and sunshine, showers and thunderstorms possible during the afternoon and evening. High 80-87.

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