New rainfall amounts of a quarter to a half inch could fall as a cold front moves slowly into the area Friday morning and then dissipates, the weather service said.
This will likely bring heavy showers and thunderstorms to Westchester County as it interacts with the moisture streaming ahead of Hurricane Arthur, which is steaming up the East Coast.
Flooding could occur in urban areas such as roads, low-lying spots and areas of poor drainage.
This will be the third day in a row in Westchester County with thunderstorms, after severe storms brought thunder, lightning, heavy rain and, in some areas, hail on Wednesday and Thursday evening. Many fireworks shows across Westchester County postponed.
High temperatures on Friday will be between 75 and 78 degrees, a welcome drop after a steamy Wednesday and Thursday with highs that approached 90 degrees.
There is a chance of showers Friday night, mainly before 5 p.m., then gradually becoming mostly clear, with a low in the mid-50s.
The holiday weekend will brighten on Saturday, with sunny skies and a high in the upper 70s. Cool overnight temperatures in the 50s will make for comfortable sleeping.
Sunday will be beautiful and sunny, with a high in the mid-80s.
If you're looking ahead to the start of the work week, Monday will also be mostly sunny, with a high near 85 degrees.
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