The weather is expected to be mostly cloudy and chilly for the New Haven St. Patrick’s Parade, with temperatures expected to fall through the 40s and 30s. However, a significant storm is expected for Monday, with 1-3 inches of rain expected, causing local street, highway, basement, stream, and river flooding, and strong gusty winds. The weather will also be colder for St.Patrick's Day, with increasing clouds and decreasing winds.