Pop-Up Storms Crash Muggy Friday Before Sun-Soaked Weekend in Boston

Boston starts Friday under mostly cloudy skies, with temperatures in the low 70s and patchy fog possible early. The day will turn warmer and muggy, reaching about 83 degrees, but most of the city should stay dry despite a few brief weather interruptions.

Brief Storm Chances Arrive This Afternoon

The latest outlook from the National Weather Service calls for a slight chance of showers late Friday morning, followed by a chance of showers and thunderstorms from around noon through the afternoon. The overall chance of precipitation is 40%, with southeast winds between 2 and 7 mph and only a tenth to a quarter-inch of rain possible. Any downpours or thunderstorms are expected to be brief and localized.

The forecast is a modest shift from Thursday’s setup, which put more emphasis on a broader late-day storm threat, as noted in Hoodline’s earlier forecast. For Friday plans, the main thing to watch is the afternoon sky rather than an all-day washout.

Cooler, Drier Air Takes Over Saturday

A cold front should clear the coast Friday evening, bringing a west wind and a more comfortable overnight low near 62. Saturday looks like the weekend’s easiest outdoor day, with sunny skies, a high around 76 and northeast winds near 7 mph. Saturday night should be mostly clear, with temperatures falling to about 63.

Sunday Warms Up Before A Wet Week

Sunday will be mostly sunny and warmer, reaching about 85 degrees with southwest winds between 6 and 12 mph. Monday stays mostly sunny near 79, but shower and thunderstorm chances increase Tuesday and Wednesday, when precipitation chances reach about 50% each day. The National Weather Service says the timing of those early- to midweek showers remains uncertain, while no watches, warnings or advisories are currently listed.

If thunder turns up Friday afternoon, head indoors until it passes. Otherwise, Boston’s weekend forecast is shaping up as a fairly friendly reset: cooler and sunnier Saturday, warmer Sunday, then a more unsettled pattern to start September.