In a setup very similar to Halloween, an area of low pressure is currently lifting its warm front through New England this morning. At the same time, an area of high pressure continues to move farther offshore. This high really limited temperatures on Monday as it produced an onshore flow off the chilly Gulf of Maine. With New England now re-entering a warm sector, another bout of near record warmth for the time of year will be ushered in.
While the day is starting off cloudy and showery (for some), a clearing trend will commence once the area becomes firmly within the warm sector. These morning clouds will limit daytime heating initially, but afternoon breaks in the cloud cover should allow temperatures to soar well above average this afternoon.
Temperatures should be able to rise into the 60s for many today. Low to even mid 70s will be possible across the typical warm spots of southern and central New England (the river valleys) and eastern Maine will likely get held to the 50s as the warm front arrives later in the day. Even if clouds were stubborn and hung around, the increasing westerly flow will create a downsloping effect off the western New England mountains and would still allow temperatures to rise well above average today.