Mercer County Weather ForecastUnited StatesOHMercer County2835CelinaSnow Showers2835Fort RecoverySnow Showers2836RockfordSnow Showers2735ColdwaterSnow Showers LikelyCarthagenaCelinaChickasawColdwaterEastview ParkFort RecoveryGrand Lake Saint Marys State ParkGrand Lake St Marys SPBHamrick AirportLakefield AirportMaria SteinMendonMercer Wildlife AreaMontezumaMontezuma BayMulholland AirportRockfordSt HenrySt Johns