Second day of record high temperatures marks end of heat wave

Another record high temperature for Boston’s Logan Airport means that an official September heat wave, the first since 1983, is in the books. This stretch of heat is about to come to an end, but as I will write in a bit, the September warmth isn’t over yet.

Dry air mixed down from higher levels of the atmosphere today, so dew points actually fell a bit. While it has been hot, the southwest wind and the less humid air made it more tolerable this afternoon than yesterday.

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Signs of next summer
Boston reached a high temperature of 93 degrees, which broke the old record of 91 set back in 1971. This is our second high temperature record of the year in a period when heat has been the exception, not the rule. Keep in the back of your mind that many summers following a strong El Nino are quite hot. This means the summer of 2016 has the potential to resemble more of what we have seen lately and not the cooler weather of earlier this summer.

The toughest part of today was the heat inside the buildings that has built up over the past few days hasn’t been able to leave at night. While not record-breaking, the overnight lows have been within a degree or two of record territory as well.

Much-needed rain
There is a slow-moving cold front headed for New England, and eventually this will usher in cooler and drier air. On the way to this transition, a period of showers and tropical downpours is likely in many areas. While I think everyone gets wet, not everyone will see uniform amounts of rain. Some areas might only get a quarter or half-inch of rainfall, while other areas could see up to 2 inches of rainfall.


Patriots home opener
I know not everyone cares about the football tomorrow, but a lot of you do. If you are planning on heading to the game, I recommend bringing foul weather gear, but remember, it will still be quite humid. While it likely won’t rain the entire game, there will be showers in the area at any time including for tailgating beforehand.


Friday brings a transitional period between the humidity and the cooler drier air. Dew points will be much lower, and it will feel better overall, especially by the end of the day. The morning could still see some lingering downpours, which can also affect the commute to work and school. This could be the case Thursday evening as well.

My pick of the weekend is Saturday with abundant sunshine, low humidity, and pleasant September temperatures. Sunday another weather system brings more clouds and some showers. The bigger story will be the cool weather.

More summer weather
Later next week warm and increasingly humid weather returns. It’s highly unlikely we see a second heat wave in the month, but I would not be surprised if we do get several more beach days ahead.

If you are worried about an early frost, forget about it. In this pattern cool crisp weather is going to be very tough to come by. The two maps below are the 6 to 10-day and 8 to 14-day outlooks. There’s strong indication of very warm weather right through the third week of the month.

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