45°
Heavy rain, which could begin overnight, could cause urban flooding along streets and low-lying areas, the weather service said.
The showers and thunderstorms moving into the area could bring rainfall amounts of 1 to 2 inches, with some areas getting as much as 3 inches.
Hourly rain rates could be up to 2 inches per hour, the weather service said.
Low temperatures overnight will be around 66. The chance of rain is 70 percent.
On Tuesday, high temperatures will approach 77 degrees with a 100 percent chance of rain.
Showers are likely with a possible thunderstorm before midnight Tuesday night, then a slight chance of showers between midnight and 3 a.m.
Click here to follow Daily Voice Greenwich and receive free news updates.
