10:58AM

DAYS 1-5 (SEPTEMBER 2-6)
As the holiday weekend rolls on (and goes by far too quickly for many) we’ll see a building of heat and humidity as high pressure sinks to the south and ends up east of New England by Monday. It sits there Tuesday as well which will be another hot and humid day, but we will have to also introduce the chance of showers and thunderstorms in the forecast as a cold front approaches from the north. This does not look like a front that is going to be a prolific rain-producer, and only expecting these showers and storms to be isolated. This front slips to the south Wednesday, taking the edge off the heat and humidity as the air flow comes in from the Atlantic with high pressure in a recently familiar place in eastern Canada. But the boundary goes right back to the north for Thursday, allowing heat and humidity back. This is all part of that ridge-dominated pattern in which the overall temperatures are warm, but the degree of that warmth is dependent on what is going on at the surface. Forecast details…
TODAY: Clouds and sun. More humid. Highs 72-78 South Coast, 78-84 elsewhere. Wind S 5-15 MPH.
TONIGHT: Partly cloudy. Patchy fog. Humid. Lows 64-70. Wind S to SW up to 10 MPH.
MONDAY – LABOR DAY: Partly cloudy. Humid. Highs 78-85 South Coast, 86-93 elsewhere. Wind S to SW 5-15 MPH.
MONDAY NIGHT: Partly cloudy. Patchy fog. Humid. Lows 66-72. Wind SW up to 10 MPH.
TUESDAY: Partly cloudy. Isolated showers and thunderstorms in the afternoon and evening. Highs 80-86 South Coast, 87-93 elsewhere. Wind SW 5-15 MPH.
WEDNESDAY: Partly cloudy. Less humid. Lows in the 60s. Highs in the 80s.
THURSDAY: Partly sunny. Slight risk of isolated showers and thunderstorms. More humid. Lows in the 60s. Highs from the lower to middle 80s South Coast, upper 80s to lower 90s elsewhere.

DAYS 6-10 (SEPTEMBER 7-11)
The boundary that will be wavering around in the days before this will settle to the south of the region during Friday September 7 which ends up an unsettled day with a risk of showers. There is uncertainty for the September 8-9 weekend because of the position of that boundary and the strength of a push of cooler/drier air courtesy high pressure in eastern Canada. With luck, that push will be strong enough so that the weekend is fair and comfortable, but this is no guarantee. The boundary may try to come back north briefly about September 10 before being pushed southward again at the end of the period, so the cooler/drier air will make a valiant effort to gain more control during this particular period, although there will be details to iron out.

DAYS 11-15 (SEPTEMBER 12-16)
I am still of the opinion that subtropical high pressure dominates with the warmer side of things being more dominant once again. The weather in the region would likely be mainly dry but not without a few shower and thunderstorm opportunities. As previously mentioned, we’ll also be paying attention to things in the tropics as they have become a little more active.

10:30AM

DAYS 1-5 (SEPTEMBER 1-5)
Labor Day Weekend! The “unofficial” final weekend of summer, but we end summer in so many different ways and places I suppose this is really just Labor Day Weekend and you can label it anything you like. But one thing we can say is that the weather will be quite decent for outdoor activity, although as we get into tomorrow and Monday the heat and humidity will be on the increase after a rather comfortable start to the weekend today. This is accomplished as high pressure, which has been centered to the north of New England, sinks to the southeast and turns winds from easterly to southerly during the course of the next 3 days. A surface boundary that brought the cooler air in after recent heat will be returning as a warm front during Sunday, which will be a cloudier day to start with but will also turn out at least partly sunny. By Monday will be fully in a south to southwest flow of hot/humid air, though heat will not be as intense as the recent spell we had. Upper level high pressure again will be in full control of the weather as we get beyond the holiday weekend into the middle of next week. A surface boundary coming through later Tuesday may trigger a few showers and thunderstorms in the area and a wind shift to the northeast will take the edge off the heat by Wednesday. Forecast details…
TODAY: Sun/cloud mix. Highs 68-76, coolest coast. Wind E 5-15 MPH.
TONIGHT: Mostly cloudy. Lows 60-67. Wind light SE.
SUNDAY: Mostly cloudy to partly sunny. More humid. Highs 72-78 South Coast, 78-84 elsewhere. Wind S 5-15 MPH.
SUNDAY NIGHT: Partly cloudy. Patchy fog. Humid. Lows 64-70. Wind S to SW up to 10 MPH.
MONDAY – LABOR DAY: Partly cloudy. Humid. Highs 78-85 South Coast, 86-93 elsewhere. Wind S to SW 5-15 MPH.
TUESDAY: Partly cloudy. Chance of a late day or nighttime shower or thunderstorm. Humid. Lows from the upper 60s to lower 70s. Highs from the lower to middle 80s South Coast, upper 80s to middle 90s elsewhere.
WEDNESDAY: Partly cloudy. Less humid. Lows in the 60s. Highs in the 80s.

DAYS 6-10 (SEPTEMBER 6-10)
Winds turn southerly again as surface high pressure slips off to the southeast September 6 (familiar pattern recently) and the heat comes back along with some humidity. Another boundary moves through on September 7 which will trend cooler with clouds and occasional showers. High pressure to the north during the September 8-9 weekend should keep it cooler but it’s unclear yet on whether the boundary that had come through will be far enough south to allow fair weather or it slides back to the north somewhat and brings unsettled weather. Too far away for certainty but leaning toward a split decision dry start wet finish for that weekend and it may remain unsettled into September 10. Low confidence on this particular forecast period.

DAYS 11-15 (SEPTEMBER 11-15)
As we get into the middle of September, though the daily details are impossible to nail down beyond 10 days away, the large scale pattern is one we’ll have to pay close attention to. It does look like the subtropical high pressure ridge that’s been largely in control of the pattern lately will continue to be in control. What happens here will be determined by surface features, warm to hot/humid when a surface boundary is to our north, and cooler when it slips to the south and high pressure moves across eastern Canada. The other thing we will need to pay attention to is the tropics, which are becoming more active as we head toward and through the climate peak of the season. The weather pattern has not favored many systems this season so far, but this has shifted to allow more activity. I don’t foresee a threat to New England during this period at this time, however past history says the weather pattern upcoming is one you don’t let your guard down either.