Boston Weather Update: Dangerous Heat Wave and Severe Storms Slam the City—Latest Forecast & Safety Tips

Boston residents are sweltering under a Heat Advisory this afternoon as temperatures soar to 96 °F at Logan Airport, with the heat index peaking near 100 °F. The National Weather Service has also issued a Severe Thunderstorm Watch until 9 p.m., warning of fast-moving cells capable of damaging wind gusts and brief downpours. Relief arrives overnight: storms taper off by 8 p.m., skies turn partly cloudy, and lows dip to a more comfortable 70 °F. Behind the cold front, Saturday will feel noticeably crisper with abundant sunshine and highs near 81 °F—almost 15 degrees cooler than today. Sunday starts mainly dry, but scattered afternoon showers and isolated thunderstorms may pop as temperatures rebound to the lower 80s. Rain chances stay limited (30 %), so outdoor plans like Harbor cruises or a Red Sox game at Fenway should proceed with only brief interruptions. Early next week, the mercury climbs again. Expect 89 °F and full sun Monday, followed by a steamy 93 °F Tuesday before another weak front knocks highs back into the 80s mid-week. Humidity will spike during this stretch, so keep hydration and sun protection in mind. Key takeaways for the weekend and beyond: • Today: Oppressive heat and possible severe storms; limit outdoor activity until sunset. • Saturday: Picture-perfect summer day—cooler, breezy along the coast. • Sunday: Mix of sun and clouds; hit-or-miss showers after 2 p.m. • Monday–Tuesday: Another heat surge; plan for 90s and high humidity. Safety tips: Wear lightweight clothing, check on vulnerable neighbors, never leave pets or kids in parked cars, and monitor weather alerts on NOAA radio or smartphone apps.