Boston wakes up to patchy fog on Thursday, June 11, but that clears by 8 AM ET — leaving a mostly sunny, genuinely hot day with a high near 89°F. With dewpoints surging toward 70°F across eastern Massachusetts, get your outdoor time in early and plan to cool down before the afternoon heats up.
Today’s Setup
After the fog lifts, west winds around 7 mph and bright sunshine take over. The National Weather Service has issued Heat Advisories for interior Massachusetts and northern Connecticut through 8 PM Friday — and while coastal Boston stays in the upper 80s, the humidity pushes heat index values into the low 90s. This is the warmest airmass of the season so far. Dewpoints near 70°F are no joke — it’ll feel sticky from the South End to the North Shore.
Best Window To Be Outside
Before noon is your sweet spot. The Charles River Esplanade, the Public Garden, and the Harborwalk will be comfortable in the morning. Once the afternoon sun merges with that thick moisture, it gets oppressive fast. Mow, run, or garden early. Tonight brings a slight chance of showers and thunderstorms before 11 PM ET, then patchy fog between 2–3 AM ET and a warm low near 72°F.
Heat Risk
The National Weather Service warns this heat poses a real risk to vulnerable people, especially indoors without air conditioning. Stay hydrated, check on neighbors, and limit strenuous outdoor activity during peak afternoon hours. Cooling centers across the city are open — use them. If your home is running humid overnight, a dehumidifier 50 pint home can make a real difference in comfort and sleep quality heading into an equally sticky Friday.
Events: Concerts, Red Sox, and World Cup
Tonight at TD Garden: ROSALÍA brings the LUX TOUR 2026 to Boston — fully indoor, so no weather worries whatsoever. Show up in a ROSALÍA t-shirt and grab any last-minute seats via Find tickets on StubHub if you still need them.
Friday, June 12: The Dave Matthews Band plays Xfinity Center in Mansfield. Friday peaks near 85°F with a mostly sunny morning, but a slight shower window opens around 2–3 PM ET and storms become more likely after 9 PM ET (50% chance). Bring a Dave Matthews Band t-shirt and tuck a rain layer in your bag. Get tickets on SeatGeek before they’re gone.
Red Sox vs. Texas Rangers at Fenway Park — the series runs Friday through Sunday (June 12–14). Check the Fenway Park gameday weather forecast before heading to Kenmore Square. A Boston Red Sox jersey and Boston Red Sox fitted cap are your gameday essentials — and bring a light jacket for Saturday night when temps ease into the upper 60s.
Saturday, June 13: FIFA World Cup — Haiti vs. Scotland at Gillette Stadium in Foxborough. Saturday looks mostly dry; any lingering showers from Friday night should clear by morning. A great day to make the trip down I-95.
Dinner Tonight
Skip anything that heats up the kitchen. A quick pasta with a light sauce or a fast stir-fry comes together in minutes and keeps the whole household cool — perfect for a sticky June evening. Need ingredients? You can order groceries on Amazon and have everything delivered to your door before dinner.
Next Few Days
Friday: Near 85°F, mostly sunny with a storm risk after 9 PM ET. A backdoor cold front drops onshore flow into eastern Massachusetts, providing some coastal relief from the heat late in the day.
Weekend: Mostly dry and still above normal temperature-wise, but humidity eases noticeably. A great window for outdoor plans across Greater Boston.
Early next week: The National Weather Service notes uncertainty about returning showers — enjoy the dry stretch while it lasts.
Browse outdoor gear deals to gear up for the warm stretch ahead.
