Over the next week or so, New England is in for a very calm stretch of weather for the most part. There will be one wrinkle in this stretch in the form of a cold front bringing a period of showers and downpours from Saturday to Sunday morning. After that, an expansive ridge of high pressure looks to build into the northeast.
After a quiet, albeit cool, two day stretch for New England on Thursday and Friday, temperatures, humidity and clouds will begin to build back up for Saturday. A line of widespread showers and possibly some downpours will break out ahead of the cold front and move west to east across New England.
These showers will likely move into western New England by Saturday afternoon before pushing eastward through Saturday evening and into the overnight hours. Much of New England outside of Vermont, western Massachusetts and the White Mountains will see a mainly dry Saturday during the daylight hours with the line not pushing east until Saturday night. The aforementioned areas will stand the best chance at seeing showers break out in the afternoon.
The good news is that this front does look to be pretty progressive, with the bulk of the rainfall exiting New England by Sunday morning with drying and warming conditions behind the front. A secondary cold front will likely cross New England later Sunday into Monday morning. This front will have a bigger impact on the overall air mass, but will bring far less showers with it. Still, a couple quick showers will be possible Sunday afternoon and evening, mainly across western New England and the higher terrain.
As far as rainfall goes, the total amount of rain expected from Saturday morning through Sunday morning has been trending down for the most part, especially for eastern areas. Total rainfall is currently looking to be in the half inch to one inch area for northern New England away from the coast (lesser amounts are likely near the coast) with a quarter inch to half inch across southern New England. Even with elevated moisture and the potential for downpours, the flash flood threat is low thanks to the speed the system will be moving.
Both temperatures and humidity will be on the rise through the weekend for New England as a southerly flow ahead of the front transports moist air from the south. Highs may still get held to the 70s on Saturday with more clouds and showers around, but Sunday will have a chance to eclipse 80° everywhere with some afternoon sunshine.
Humidity will become elevated on Saturday and will remain elevated until the secondary cold front sweeps through later Sunday into Monday morning. Dew points will be well into the 60s, possibly eclipsing the 70° mark will be around from Saturday afternoon through Sunday afternoon. Humidity will nose dive after the weekend.
An expansive area of high pressure will set up for New England for at least the first half of next week, keeping the very calm weather around. This high will also allow for the fall-like air mass to stick around, with temperatures remaining below average through midweek. Monday is currently looking to be the coolest day with a gradual warming trend thereafter. Overnight lows will run from the low to mid 40s north to low 50s south during this time.
Weather map for Tuesday morning showing the expansive high pressure set up for the northern tier:
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