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Boston Weather, Mild Days Ahead with Chance of Showers and Fog

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Published on September 17, 2025
Boston Weather, Mild Days Ahead with Chance of Showers and FogSource: Google Street View

The past days in Boston have gifted its residents with a blend of clouds and sunshine amidst fall-like temperatures—a mild prelude to the season's shift. Yet, as we edge further into the week, Bostonians should brace for a minor shake-up in their weather patterns. A low-pressure system is drifting North, rolling out a carpet of clouds across the New England sky, and bringing the potential for a spot of rain.

Wednesday kicked off with a mix of low clouds and patchy fog for some, according to NBC Boston. But the clouds are expected to part for a time, casting partly sunny skies over Boston throughout the day, with temperatures peaking near the low 70s downtown. MetroWest areas are forecast to bask in slightly warmer mid 70s. Precipitation, mostly holding off until later, is slated to start sprinkling the city come nightfall.

The National Weather Service predicts a 40% chance of showers tonight, mainly after 9pm, with fog likely to envelop the early hours. Thursday will see a continued, albeit slight, chance of showers before the afternoon, while the rest of the day is expected to grace us with partly sunny skies. The mercury will climb to a comfortable high near 76 degrees, with a light breeze shifting from south to west as the day progresses.

Looking ahead, Bostonians can anticipate a mostly stellar weekend. The sky will clear by Thursday night, making way for a sunny Friday with highs flirting with the upper 70s, according to the National Weather Service. And as the week winds down, the evening temperatures will dip pleasantly to the low 50s. Saturday, too, will dawn sunny, with daytime highs predicted in the upper 60s—a gentle nod to the burgeoning autumn. Come Sunday, the city should wake to more of the same: sunny skies and highs cresting at a comfortable 71 degrees.

Boston-Weather & Environment