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Boston Braces for Heat Wave with Temperatures Set to Hit Low 90s Later This Week

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Published on June 16, 2025
Boston Braces for Heat Wave with Temperatures Set to Hit Low 90s Later This WeekSource: Google Street View

Boston residents can look forward to the summer solstice on Friday and enjoy mild weather today and tomorrow. Today will be partly sunny with a high around 69°F and a light east wind. Tonight will be mostly cloudy with a low of about 57°F. Later this week, temperatures are expected to rise, accompanied by increased heat and humidity, according to the National Weather Forecast.

On Tuesday, despite the cloud cover with a high near 71 and an east wind of 5 to 8 mph, Boston will see warmer temperatures and increased humidity. "We’re about to sizzle in the summer heat and humidity this week," a report by NBC Boston stated, indicating that the real heat will kick in on Thursday, with highs potentially reaching the low 90s.

Wednesday's forecast brings a chance of showers and thunderstorms, mainly before 3pm, with mostly cloudy skies and a high near 82 degrees. The chance of precipitation sits at 40%, with a low around 69 in the evening. The humidity levels are expected to climb even further by Thursday, escalating discomfort for some.

Heading into the weekend, Bostonians can anticipate a mix of weather conditions. There is a 30% chance of showers on Juneteenth in the afternoon, after 4 pm. Nevertheless, temperatures will soar to a hot 91 degrees, according to the weather forecast. "A cold front will likely bring a chance of showers and isolated thunderstorms Thursday," and some storms could be strong, reported NBC Boston.

Friday will mark both the arrival of summer and a slight cool down, with sunny weather and a high near 81 degrees. The forecast models suggest there's a chance of dry weather extending into Saturday, providing a potentially pleasant start to the weekend with sunny skies and a high near 81 degrees. As Boston prepares for these summer days and the accompanying weather, it's clear that the city will experience a wide range of conditions in a short span of time.

Boston-Weather & Environment