Boston kicks off Sunday sunny and hot, with highs climbing near 91°F under mostly clear skies — if you’ve got errands, yard work, or a walk along the Charles River Esplanade on your list, knock it out before midday, because lingering humidity will make the afternoon feel heavier than the thermometer alone suggests.
Today’s Setup
The National Weather Service says today stays dry across Greater Boston as the flow turns westerly, with winds around 6 to 12 mph out of the west and highs near 91°F. Dew points stay elevated through the afternoon even though a weak cold front slides through this evening, so expect that sticky, close-to-the-skin feel from Southie to Somerville right up until sunset.
Best Window To Be Outside
Forecasters expect the front to usher in a slightly drier air mass overnight, when Sunday Night’s low eases to 69°F under clear skies. That makes early morning — before 10 a.m. — and the evening after 7 p.m. your most comfortable stretches for anything active, whether that’s a jog along the Emerald Necklace or dinner outside in the North End. Teeing off early is smart too; toss a golf tee assortment in the bag before you beat the midday heat.
Humidity And Storm Risk This Week
The NWS Boston office notes humidity climbs back up Monday through Wednesday, with dew points near 70°F and highs holding in the upper 80s (Monday’s forecast high is 90°F). A low pressure system over Hudson Bay is pushing shortwaves into New England, bringing daily shower and thunderstorm chances — Monday Night already carries a slight chance of showers between 7 p.m. and midnight. Forecasters caution that models are struggling to pin down exact timing and location this week, and no severe weather outlook is in effect for our area right now. Real relief doesn’t arrive until Friday, when highs ease toward 80°F and humidity finally drops.
What To Wear Or Bring
Light, breathable fabrics and sun protection are the move today — check out the $5 UPF 50+ sun hoodie deal if you’re spending hours outside. Hydrate often and keep pets off hot pavement during peak afternoon hours.
Games And Shows Around Town
BIG3 basketball tips off at TD Garden tonight, and tomorrow night Olivia Dean: The Art Of Loving Live plays TD Garden — grab an Olivia Dean t-shirt and Get tickets on SeatGeek before the show. Looking ahead, the Patriots host the Colts for a preseason opener at Gillette Stadium on Thursday, August 13. Tailgaters should pack a portable propane grill and Official team gear on Fanatics, and Find tickets on StubHub if you still need seats.
Tonight’s Dinner
With grill-friendly weather holding, tonight’s a great night for burgers, steaks, or grilled chicken with corn on the cob. Keep an instant-read meat thermometer handy for perfect doneness and a grill brush and scraper set for easy cleanup. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Monday stays sunny and hot with a high near 90°F, though a slight chance of evening showers moves in Monday Night as humidity builds back up. Expect the muggy, unsettled pattern to continue into midweek before more comfortable, drier air arrives by Friday. Browse outdoor gear deals to get set up for the next stretch of nice weather, and check back for updates on this week’s shower and thunderstorm timing.
