Oppressive...
I've only used that word a handful of times this Summer and I don't use it loosely but today it's applicable. The National Weather Service has issued a Heat Advisory for the majority of Eastern MA for the afternoon...this means that the temperature and humidity together will make it feel like close to 100 degrees! There won't be much relief in the State but some will be found on Cape Ann and Cape Cod with a SW wind direction moderating temps just a bit. There is also a slight chance for thunderstorms this evening within this hot and humid air mass.
Tomorrow, we remain out ahead of the cold front...temps and humidity will escalate again. I don;t see the temps getting to today's levels...low clouds and fog may hang a bit longer tomorrow and the wind direction will be more S than SW this will create more of a marine influence. Regardless, we are still looking at highs in the 85-90 degree range. The thunderstorm threat will be higher tomorrow especially in the evening. There may be a few air mass storms that pop later in the afternoon but the main line will be along or just ahead of the approaching cold front which isn't scheduled to move through until later Thursday night. This means that most of tomorrow will be storm-free. The problem is tomorrow night will not be and of course the Pats are playing the Jets. At present time I think there will be a pretty good light show off in the distance and perhaps some of those storms sneaking in for the second half.
The front will work through early Friday morning and that means the line of showers and storms will likely be hanging around for the morning commute. Then the wind shifts and the day gets cooler but with a cool pocket of air moving in overhead we are looking at more clouds than sun. Chilly air will hang around on Saturday with highs in the 60s and a blend of sun and clouds but Sunday will warm up into the 70s with sunshine.