Boston rolled out of bed under a low gray lid Sunday, May 10, 2026, with patchy fog hugging the harbor and temperatures stuck in the low-to-mid 50s. The fog is expected to thin slowly through midmorning across most neighborhoods, but reduced visibility may slow commutes near the water and along the Storrow Drive corridor. Inland areas should warm into the upper 60s this afternoon while the immediate coast stays noticeably cooler, and southwest winds will run about 7–12 mph. Scattered showers and a small chance of an isolated weak thunderstorm are possible from mid-afternoon into early evening, so an umbrella is still a smart accessory if you have late-day plans.
Foggy Morning Commute
Patchy fog is expected to linger through about 9 a.m., with visibility improving late morning for most of the city. According to the National Weather Service Boston/Norton, low clouds and areas of fog will gradually give way to more broken cloud cover today, with southwest winds around 7–12 mph. If you are driving or biking near the harbor, stick with low beams, slow it down a bit, and leave extra stopping distance while visibility is reduced.
Afternoon Showers Mainly Inland
The best window for any passing shower or a brief, weak thunderstorm runs roughly from 2–8 p.m., focused mainly across interior neighborhoods. Coastal areas have a lower chance of rain and will stay cooler. A May 7 Mother’s Day preview carried a similar outlook, but today’s update leans more toward spotty afternoon activity rather than a full-on washout. For outdoor plans, it is worth lining up a backup option for the late afternoon and keeping weather alerts enabled on your phone.
Week Ahead
Monday turns noticeably cooler, with highs expected to top out in the upper 50s. Tuesday should bring a brief, drier break before another unsettled stretch moves in midweek. Forecasters are flagging increasing uncertainty for Wednesday into Thursday, when the region may see more widespread showers and thunderstorms depending on how the next system evolves. If you have events later in the week, plan to check the forecast again Tuesday evening, since timing and coverage could still shift.
Marine And Commute Notes
Small craft advisories that were in effect early today have been canceled as gusts and seas continue to ease, with more typical seas expected around 2–4 feet in most local waters. Mariners should still check the latest marine forecast before leaving the harbors, and drivers should give themselves extra time if fog remains dense near the waterfront. Local transit agencies may post service notices if heavier rain or gusty winds develop this afternoon, so it is worth a quick look at agency feeds if your trip involves ferries or bridges.
Bottom line: a foggy start gives way to a mild, mostly cloudy Mother’s Day with a chance of spotty showers inland this afternoon while coastal spots stay cooler. For the latest details, consult the National Weather Service and your local transit provider before heading out.
