Boston, MA – Summer sun dominates Sunday across Massachusetts, but Boston residents should plan around a sharp change by Tuesday afternoon. Highs will reach 85°F Sunday and 88°F Monday before thunderstorms roll in by 2 p.m. Tuesday, potentially impacting midweek travel and holiday plans.
According to the National Weather Service in Norton, a chance of showers begins late Monday night, with a greater threat of storms arriving Tuesday between 2 and 9 p.m. Rain and gusty winds may disrupt afternoon commutes and preparations for the Independence Day holiday. Tuesday’s high will hover near 87°F, with a southwest breeze reaching up to 13 mph. A secondary wave of storms could linger until around 11 p.m.
Sunday will be warm and mostly sunny, offering ideal outdoor conditions across Suffolk, Middlesex, and Norfolk counties. Monday brings more sun and rising humidity, pushing the heat index higher in urban areas. Residents are urged to stay hydrated and avoid strenuous activity during peak afternoon hours.
Looking ahead, Wednesday and Thursday both remain sunny and hot, with highs near 88°F and light winds — ideal weather leading into Fourth of July celebrations. Friday, July 4th itself currently looks clear and seasonably warm, with highs in the upper 80s and light winds.
📅 6-Day Boston Weather Outlook: June 29 – July 4
- Sunday (6/29): Mostly sunny, high near 85°F
- Monday (6/30): Sunny, hot, high of 88°F
- Tuesday (7/1): Showers & storms after 2 p.m., high 87°F
- Wednesday (7/2): Sunny, high near 88°F
- Thursday (7/3): Mostly sunny, high near 88°F
- Friday – 4th of July: Sunny and warm, high near 87°F
🎇 Independence Day celebrations look safe and dry — stay tuned for any late-week advisories.
