The National Weather Service is cautioning that tomorrow might not be the best beach day: A front moving in after midnight could bring rain and possibly worse, the NWS warns:
There is the threat of flooding with heavy rain.
In addition, accompanying thunderstorms could be strong to severe. Threats of gusty winds and possibly even a brief spin up of a waterspout or tornado.
While all of Southern New England is at risk, greatest concern is along a south to north line centered along and around the RI / CT border through the eastern half of MA.