New England Weather This Week: Very September-Like

A mainly dry and quiet week is on tap. This will be complete with cool temperatures and very low humidity. Overall, it will feel more like mid-September than mid-August. A warm-up back to near seasonal averages is expected by late this week.

MONDAY & TUESDAY

In the wake of yesterday evening's cold front, a sprawling area of Canadian high pressure has begun to spread its influence southward into New England. This has allowed a much cooler air mass to spill into New England. The 70s will dominate for highs across pretty much all of New England, with the immediate coast and mountain towns possibly only topping out in the upper 60s. There will be no humidity to speak of given how dry this air mass is, which will also allow for plenty of sunshine. Tuesday will likely see generally more clouds than Monday.

Below: Euro showing temperature departure from average this afternoon. Expect more of the same for Tuesday:

With high pressure in firm control tonight, it will be a very good night for optimal radiational cooling. Dew points in the 40s and light winds will allow temperatures to bottom out tonight, with morning lows in the 40s to low 50s. The main question on how chilly it gets tonight will be clouds. An increase in clouds is expected tonight, and if these clouds form a bit too early, it could limit how much cooling can occur. If skies stay clear long enough, the higher terrain could even drop into the upper 30s.

WEDNESDAY

Tuesday night into Wednesday, return flow from the south ahead of a trough moving to our southwest will try to advect some moisture back into the region. This will help create more clouds across New England. This setup will also promote some scattered shower chances across the region. With that said, the air mass will remain on the drier side, so shower activity will be very spotty at best for most of the region.

Many areas will likely end up staying completely dry. The highest shower chances will be across the northern third of New England as the trough's influence will be closest. High pressure will remain to New England's east, feeding the drier air into the system and doing its best to dry up the showers. Temperatures and humidity will be similar to Monday and Tuesday.

THURSDAY & FRIDAY

High pressure will remain to New England's north late this week, continuing the cool, dry and quiet weather theme for the week. Thursday will continue to see highs in the 70s dominate the region. A moderation back toward seasonable temperatures will once again promote highs in the 80s by Friday, though a backdoor cold front may need to be watched Friday morning, which could result in the day trending cooler throughout the week.

Hurricane Erin will make its closest pass to New England Thursday into Friday morning. The high pressure to our north and the trough passing through around mid-week will help steer the hurricane well offshore of New England (and the entire east coast in general). The storm will create high swells across New England late this week, particularly for south-facing shorelines.

WEEKEND

This week's high pressure will likely break down this weekend as a trough pushes north of New England. This system will drag its cold front across the region, bringing a period of showers and possible thunderstorms. As of now, this is favored to occur on Sunday as high pressure still looks to hold for Saturday.

Below: Current weather map for Saturday morning:

With that said, timing of the front is uncertain, especially as Erin continues to churn in the Atlantic. Hurricanes swirling in the Atlantic can have a large impact on the movement of other features across the United States, so timing this front is very difficult to do right now. Return flow from the south ahead of this front will promote warmer temperatures and increasing humidity as well.