Boston Braces for Warm-Up With Coastal Divide

Inland areas could see 80s while beaches stay in 60s due to tricky weather pattern.

Apr. 13, 2026 at 12:42am

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A vast, atmospheric landscape painting in muted tones of gray, blue, and gold, capturing the hazy, sublime scale of the Massachusetts coastline on a warm spring day. The distant Boston skyline is barely visible through the coastal fog, emphasizing the overwhelming power of nature.A warm spring day on the Massachusetts coast belies the temperature divide between inland and coastal communities.Boston Today

Boston is set to see a warm-up this week, with temperatures potentially reaching the upper 70s inland. However, a coastal boundary or 'backdoor cold front' could create a stark temperature divide, with communities near the ocean staying much cooler, potentially only reaching the low 60s on the warmest days. Meteorologists say there is uncertainty around exactly where this boundary will set up, leading to a 20-degree difference in highs across the region.

Why it matters

This weather pattern highlights the complex microclimate effects that can occur in coastal regions, with the ocean temperature significantly impacting temperatures just a few miles inland. It's an important consideration for residents and businesses planning outdoor activities this week.

The details

According to the National Weather Service, Monday will start the week with a high in the upper 60s for Boston, with gusty winds and a slight chance of rain. Tuesday is expected to see a high in the upper 70s as skies remain mostly sunny. The warmest days are likely to be Tuesday through Friday, with Wednesday potentially reaching the upper 70s - but that's dependent on where the coastal boundary sets up. If it stays north of Boston, the city may stay warm, but if it moves south, highs could only reach the low 60s, a 20-degree difference.

  • Monday's high expected in the upper 60s.
  • Tuesday's high forecast to reach the upper 70s.
  • Wednesday's high could range from the low 60s to upper 70s depending on coastal boundary.

The players

Torry Dooley

A meteorologist with the National Weather Service.

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What they’re saying

“Temperatures are actually going to be climbing this week. But the tricky thing with the temperatures for the city of Boston this week will have to do with, there's going to be a really tight gradient potentially of really warm summer-like temperatures, and kind of cooler spring-like temperatures.”

— Torry Dooley, Meteorologist

“So it's almost like a 20-degree temperature difference on Wednesday, depending on where that boundary sets up. So unfortunately, there is a bit of uncertainty with how warm things might get this week in Boston.”

— Torry Dooley, Meteorologist

What’s next

Meteorologists will continue to monitor the coastal boundary and provide updates on the expected temperature range for the Boston area as the week progresses.

The takeaway

This weather pattern highlights the complex microclimate effects that can occur in coastal regions, with the ocean temperature significantly impacting temperatures just a few miles inland. It's an important consideration for residents and businesses planning outdoor activities this week.