With a primarily easterly wind at 5-10 mph, expect highs to reach the upper 70s to low 80s across southern New Hampshire and northern Massachusetts, except in the mid 70s at the coast and, depending on how far the backdoor front progresses, perhaps mid to upper 80s in southwest NH and adjacent sections of north-central MA, but that is still a wild card. This is a tough forecast, except in that it’s pretty clear that interior areas of Northeast MA and Southeast NH will only crack the low 80s at best.
Skies will be mainly cloudy and there will be a chance of afternoon showers and storms, especially in warmer locations. SPC has highlighted Western/Central MA, Southwest NH, all of VT, interior CT and northern RI in a marginal risk of severe thunderstorms, and a slight risk in southwest VT and northwest MA. Heavy rain, frequent lightning and strong winds are the main threats with some instances of damaging winds possible.
I should note that there are heat advisories and excessive heat warnings in south central MA, northern RI and all of CT for today. My heat safety graphics are in yesterday’s post.
The high heat returns for all tomorrow.