Mercer County Weather ForecastUnited StatesOHMercer County-19CelinaCold-19Fort RecoveryCold-29RockfordCold-19ColdwaterColdCarthagenaCelinaChickasawColdwaterEastview ParkFort RecoveryGrand Lake Saint Marys State ParkGrand Lake St Marys SPBHamrick AirportLakefield AirportMaria SteinMendonMercer Wildlife AreaMontezumaMontezuma BayMulholland AirportRockfordSt HenrySt Johns