Boston is starting Sunday, August 23, under cloudy skies and patchy fog, with temperatures in the mid-60s near Logan. A few showers may drift through before afternoon, but the bigger story is a muggy, gray day topping out around 77 degrees before a much brighter stretch takes over Monday.
Fog And A Few Showers Shape Sunday
Patchy fog and a slight chance of rain showers are expected through early afternoon, followed by a 30% chance of precipitation overall. According to the National Weather Service, east winds will stay light at 3 to 7 mph while the city remains mostly cloudy.
Showers and thunderstorms become more of an issue inland Sunday afternoon, especially toward the Connecticut River Valley, where an isolated strong storm could produce damaging winds and a torrential downpour. Boston is not under any watches, warnings or advisories, but anyone traveling west should keep an eye on changing skies.
Fog Returns Tonight Before Skies Clear
A slight chance of showers lingers before 9 p.m. Sunday, then patchy fog may redevelop between 9 p.m. and 1 a.m. Temperatures will fall only to around 66 degrees, with a light south wind.
Monday Starts A Dry, Sunny Run
The front moves through overnight, clearing skies quickly for Monday, August 24. Boston should reach about 82 degrees under sunshine, with southwest winds between 5 and 14 mph and noticeably lower humidity.
Mostly Sunny Through Wednesday, Rain Returns Late Week
Tuesday stays sunny near 80 degrees, while Wednesday could be the warmest day of the stretch at about 83. Thursday remains mostly sunny near 80, but shower chances rise Thursday night and Friday, when scattered thunderstorms are possible and the high should be near 79.
For Sunday plans, light layers and a rain backup make sense, especially after lunch and for trips inland. The week ahead looks easier on outdoor schedules until late Thursday, when the forecast turns unsettled again.
