Mercer County Weather ForecastUnited StatesOHMercer County1536CelinaRain/Snow1535Fort RecoveryRain/Snow1535RockfordRain/Snow1535ColdwaterRain/SnowCarthagenaCelinaChickasawColdwaterEastview ParkFort RecoveryGrand Lake Saint Marys State ParkGrand Lake St Marys SPBHamrick AirportLakefield AirportMaria SteinMendonMercer Wildlife AreaMontezumaMontezuma BayMulholland AirportRockfordSt HenrySt Johns