Wethersfield is a town located in Hartford County, Connecticut, United States. It is located immediately south of Hartford along the Connecticut River. The town is part of the Capitol Planning Region. The population was 27,298 at the time of the 2020 census. Many records from colonial times spell the name "Weathersfield" and "Wythersfield", while Native Americans called it Pyquag. "Watertown" is a variant name.