Boston is squeezing in a classic, cool New England summer morning on Monday, July 27, 2026, before the weather turns messy. Logan International Airport started the day in the low 60s, with a high near 80°F on tap this afternoon. Light northeast winds will keep waterfront spots a bit cooler, giving the city a solid window for errands, outdoor plans, and harbor time ahead of a much wetter stretch later this week.
Afternoon And Tonight
Skies stay mostly bright through this afternoon, with temperatures topping out around 80°F and a light northeast breeze of 1–9 mph. The rain chance is low for most of Boston, although an isolated shower or brief thunderstorm could bubble up late in the day into the evening, mainly inland and west of the city. Tonight turns mostly clear, with a low near 65°F and south winds around 5–9 mph.
Late Tuesday Through Thursday
A stronger low pressure system slides into southern New England on Tuesday, July 28, and it is not in a hurry to leave. From late Tuesday through Thursday, July 30, expect a prolonged stretch of rain, at times heavy. Widespread totals of roughly 1.5–3 inches are on the table, with locally higher amounts that could trigger scattered flash flooding in poor-drainage and urban spots. That outlook comes from the latest discussion issued by the National Weather Service Boston/Norton.
Marine And Commute Notes
Out on the water, winds and seas ramp up late Tuesday into Wednesday, with waves building toward 5 feet and gusts that may flirt with small-craft advisory levels. Boaters should check the latest marine forecast before committing to any trips. Forecasters also flag slightly higher-than-normal tides, which could lead to some splashover at Nantucket during Wednesday night’s high tide.
On land, drivers and event organizers should plan for slower commutes when the heaviest bands move through, keep outdoor gatherings flexible, and skip driving through standing water, especially in low-lying urban areas that are prone to quick flooding.
What We’ve Reported
We first highlighted this growing midweek threat in a post published July 26; today’s update layers in fresh timing and flooding details from the National Weather Service. For more background and a closer look at how this pattern evolved, see our earlier story on rip currents and midweek downpours.
