Low pressure will cut across southern New England like an express train Wednesday morning and early afternoon then race away to the northeast during Wednesday night. This will be a short-duration but moderate to high impact system for the region. Heavy rain and gusty winds will impact the morning commute in the Boston area. This time, heavy snow will be confined mainly to the mountains of northern New England. By afternoon, the heaviest precipitation will be on the way out, with most rain done in southern New England.
By Thanksgiving morning, the storm will be long gone, and we will enjoy a bright but chilly holiday.
High pressure will build off the East Coast once again, with a fair and milder period of weather for the remainder of the Thanksgiving weekend.
By early next week, low pressure will approach from the southwest. There are some questions on timing of this system, but except the potential for unsettled weather at any point during the last 3 days of November.
Detailed forecast for the Boston area…
OVERNIGHT: Overcast. Rain becoming moderate to heavy toward dawn. Low around 40. Wind E increasing to 10-20 MPH.
WEDNESDAY: Overcast. Moderate to heavy rain early morning (through around 8AM), a period of lighter rain mid morning, then embedded heavier showers west to east late morning (10AM to just before noon). Slight chance of light rain during the afternoon hours. High around 45. Wind N 10-20 MPH gusting around 30 MPH, strongest early in the day.
WEDNESDAY NIGHT: Clearing. Low 25-30 inland, 31-36 coast. Wind NW 10-20 MPH.
THURSDAY – THANKSGIVING: Mostly sunny. Temperature rising through the 30s during the high school football games, into the 40s during local travel and dinnertime, highest about 49 before coasting back toward 40 as the sun sinks in the SW sky late day. Wind NW 5-15 MPH.
THURSDAY NIGHT: Clear. Heavy frost forming. Low from near 25 inland valleys to 35 coast. Wind near calm.
FRIDAY: Sunny. High 60-65. Wind WSW increasing to 10-20 MPH.
SATURDAY: Mostly sunny. Low 44. High 59.
SUNDAY: Partly sunny. Low 41. High 54.
MONDAY: Chance of rain. Low 42. High 51.
TUESDAY: Chance of rain. Low 40. High 50.
WEDNESDAY: Chance of showers. Low 44. High 54.