Boston, Massachusetts – Drivers across Massachusetts should plan for slow-going commutes and potential delays on I-93 and I-90 as storms and thick fog move through Boston by midday Wednesday. With temperatures climbing toward 77°F, scattered thunderstorms and patchy fog are set to disrupt travel from late morning into the afternoon, posing hazards for those heading to work or summer activities.
According to the National Weather Service, a chance of showers and thunderstorms will develop before 11 a.m., followed by patchy fog between 11 a.m. and 1 p.m., then more storms possible after 2 p.m. Precipitation chances sit at 40%, with rainfall totals between a quarter and half inch—higher amounts possible in thunderstorms. Motorists should avoid sudden lane changes, use headlights, and delay travel where possible. If you must be on the roads, especially I-93 or I-90, slow down for limited visibility and wet pavement.
Boston’s neighborhoods and nearby towns—including Cambridge, Quincy, and Somerville—may see minor flooding in low-lying areas. MBTA and commuter rail riders should expect possible weather-related delays. Northeast winds will hold steady at 3 to 7 mph, so downed branches and power flickers aren’t expected, but always charge devices ahead of potential outages.
The threat of showers lingers Thursday with more thunderstorms and a high near 74°F. By Friday, skies gradually clear, giving way to partly sunny, more comfortable weather for the weekend. Saturday and Sunday bring highs in the low to mid-80s with only isolated clouds, making it a prime weekend for outdoor events.
Five-Day Forecast (Boston, MA):
- Wednesday: Chance of thunderstorms and patchy fog, high 77°F.
- Thursday: Showers and storms likely, high 74°F.
- Friday: Slight chance of morning storms, then partly sunny, high 79°F.
- Saturday: Partly sunny, high 82°F.
- Sunday: Mostly sunny, high 85°F.




