NEW YORK — The first day of fall on Wednesday will be cloudy and mild, but with increased humidity, before rain moves in to end the workweek.
A persistent southeasterly airflow continues for the next day-and-a-half, well ahead of a slow-moving cold front. A lot of tropical moisture is accompanying the flow, which will raise the humidity on Wednesday.
Heading into Thursday, the risk of showers will increase, but the steadiest rain may hold off until the evening hours and it may become heavy during the overnight hours before it tapers off on Friday. The risk of flash flooding is possible, especially for areas well west of the city.
There’s also a chance for scattered showers Tuesday night. It will be a warmer night, as temperatures drop into the upper 60s.
While Wednesday may feature a few breaks of sun, it will primarily be a cloudy day. The chance of a passing shower will be possible, but the threat will be slightly higher for western sections as the front starts to approach the region. Temperatures will top out in the upper 70s to around 80 degrees.
Autumn officially begins at 3:21 p.m., when the sun’s most direct rays approach the Equator, giving roughly equal amounts of daylight across the globe.
Expect a few more showers on Thursday as the front nears the Eastern Seaboard. Temperatures will top out in the mid-70s. At night, the rain should become steadier, and it could become heavy.
In addition to the threat of torrential downpours, some thunderstorms may develop, and they may be on the severe side containing damaging winds.
The front will be slow to exit, keeping the chance of rain around on Friday.
The forecast models are hinting that we may not be able to dry out until the late afternoon hours or evening as a result. Regardless of when the rain tapers off, it will be a cooler day as temperatures top out in the lower 70s.
The good news is the weekend should feature plenty of sunshine. Temperatures will be in the low to mid-70s for both Saturday and Sunday.