News Summary
Boston has confirmed the end of a four-day heat wave, with temperatures reaching the mid-90s but not breaking the 97°F record set in 1943. Following this extreme heat, temperatures are expected to drop significantly, reaching the low 70s with possible showers. This marks the longest heat wave since July 2022, and Boston is projected to have measurable rain for the 16th consecutive weekend. Residents can anticipate a much cooler and more comfortable weather outlook as summer begins to wane.
Boston confirmed the end of a four-day heat wave on Wednesday, with temperatures reaching back into the mid-90s. While this peak temperature approached the daily high record of 97°F set in 1943, it did not break it. This event marks the longest heat wave since the seven-day heat occurrence from July 19-25, 2022. Boston has seen a total of 56 heat waves lasting four days throughout its history, with the longest ever recorded heat wave taking place for nine days back in July 1912.
Following this period of extreme heat, the forecast indicates a significant cool down beginning late Wednesday evening. The arrival of dry air is expected to bring relief, leading to more comfortable dew points settling around the 50s. On Thursday, high temperatures are projected to only reach the low 70s. Scattered showers are anticipated in the afternoon and evening, prompting commuters to prepare by carrying umbrellas.
On Thursday night, overnight lows are predicted to drop into the upper 50s. As a weak cold front pushes southward across New England by Thursday morning, temperatures will be well below average, around 5 degrees lower than normal for the season. Greater Boston is forecast to experience mostly cloudy skies alongside temperatures in the low 70s. Winds from the east/northeast at approximately 10 mph will help keep coastal areas cooler.
The weather system is expected to bring scattered showers on Friday and Saturday, particularly in regions closer to the Canadian border. Notably, Boston is on track to receive measurable rain for the 16th consecutive weekend as these weather patterns continue to shift. Across Massachusetts, mornings will see partial sunshine transitioning into mostly cloudy skies, with scattered light showers likely later in the day.
The weather outlook varies across New England. Southeastern Massachusetts will likely experience highs in the low 70s, accompanied by winds reaching up to 10 mph. In the Berkshires, temperatures are estimated to climb to the upper 60s, with the potential for scattered showers in the area. Meanwhile, Cape Cod and the Islands will see mostly cloudy conditions with highs ranging from the upper 60s to low 70s.
Across state lines, New Hampshire is expected to be the sunniest region in Southern New England, with maximum temperatures around the mid-70s. Vermont and Maine are likely to start with partly sunny skies that will transition to mostly cloudy conditions, with scattered showers being a possibility. Lows throughout Vermont and Maine will also settle in the upper 50s as clouds increase overnight.
Overall, Bostonians and residents across New England can anticipate a noticeable shift in weather conditions, moving from extreme heat to cooler temperatures and rain, offering a reprieve as summer wanes.
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Additional Resources
- NBC Boston: Boston Heat Wave Record Temperature
- Wikipedia: Heat Wave
- Boston Globe: Heat Wave Continues Across Boston
- Google Search: Boston Heat Wave 2025
- Washington Post: Heat Wave and Humidity on East Coast
- Google Scholar: Heat Wave Boston
- CBS News: Heat Wave in Massachusetts Towns
- Encyclopedia Britannica: Heat Wave
