With Boston reaching a high temperature of 93 degrees Tuesday this is now the 3rd official heat wave in Boston this summer season. The last three days, Sunday, Monday and Tuesday, have yielded high temperatures of 93, 92 and 93 degrees respectively. And, we are not done by a long shot as the heat wave continues for at least three more days.
A Heat Advisory has been issued by the National Weather Service for Wednesday as the combination of 90 + degree temperatures and dew points 70 degrees or higher will bring the Heat Index readings, that’s the real feel temperature, to around 100 degrees or more. Triple “H” weather will persist through the day with hazy skies, hot and humid conditions. High temperatures in the low to mid 90s, however a sea breeze is expected to develop right along the immediate coast during the afternoon. This will dip temperatures through the 80s on the North Shore beaches. Tonight’s lows only falling to the low to mid 70s. There is a slight chance of a widely scattered shower or thunderstorm late day or in the evening but it is a long shot.
The large ridge of high pressure continues to keep the region in its grip of hot and humid weather the remainder of this week. Relief from the heat is not expected until the second half of the upcoming weekend. Until then you can expect high temperatures into the 90s with uncomfortable to oppressive humidity and warm, muggy nights that will make sleeping difficult without air conditioning. This is the kind of heat that can be a killer, especially for the elderly and anyone who is over exerting themselves outside.
Although there is a slight chance of an afternoon or evening shower or thunderstorm on Thursday and Friday there will be a much better chance for precipitation on Saturday as a cold front approaches. This front will be the leading edge of cooler and somewhat more comfortable air and with the clashing of the two air masses a few strong to severe thunderstorms could break out Saturday and Saturday evening. The front is expected to finally bring an end to the heat wave with a more comfortable and less humid air mass to follow in its wake.
Thursday and Friday continue hot and humid. Partly cloudy skies with a chance of an afternoon or evening shower or storm. Heavy rain could accompany any of the storms. This shower activity will be widely scattered. Highs both days into the low and mid 90s and the overnight lows in the mid to upper 70s.
Saturday is setting up to be partly to mostly cloudy with showers and storms, some of which could be strong to severe. Not so hot but remaining humid, highs in the upper 80s. Nighttime lows about 70 degrees.
Sunday looks to be partly sunny and seasonably warm. Highs in the low 80s. You will notice the air drying out slowly as the humidity levels begin to decrease. There will still be a slight chance of an afternoon shower or storm.