Scattered thunderstorms today, increasing heat and humidity – NBC Boston
An increasing flow from the southwest brought much warmer and humid air from the Gulf of Mexico to New England.
Clouds will break in the afternoon, especially inland, bringing temperatures from the mid 70s to 80s, cooler from the mid to upper 60s on the coast.
An intermediate level disturbance will produce a series of showers and thunderstorms this afternoon and evening, some of which could produce frequent lightning, showers and isolated wind damage.
In the evening, the scattered showers and thunderstorms will subside with the daytime warming and as the best instability recedes from the area. The high pressures entering New England will allow the skies to clear up, with the exception of Cape Town and the Islands where stratus clouds and low clouds are harsh. Low temperatures will drop between the mid-1950s and the 1960s.
Expect a dry and calm start to the weekend as high pressure continues to creep into the area. Also expect mostly sunny skies with cumulus clouds in good weather above. The high temperatures will struggle to come out of the upper 60s to the mid 70s on the coast.
Elsewhere, temperatures rise until the mid-1980s, with a few places reaching the 90-degree low in the Merrimack Valley. Northwest winds will be 10 to 20 MPH, with occasional gusts of up to 25 MPH. A high pressure ridge is forming in the east on Sunday, preparing us for what will be the first heat wave of the season. Sunday through Tuesday, expecting high temperatures to hit lows in the mid-90s each day – certainly excessive for early June!
Some temperature records could be called into question in the region. Low temperatures will only drop from the mid-60s to the 70s at night, leading to uncomfortable sleep for some people.
A backdoor cold front is expected to enter New England on Tuesday, providing some relief to the region in the exclusive 10-day forecast of the first alert.