Overview: Mansfield, OHMansfield, OH (United States of America) is a place with a mild continental climate. The day temperatures range from 1 °C (33 °F) in January to 28 °C (83 °F) in July. The least rainy month in Mansfield, OH is September with its 10 days of rain, the rainiest month is May, when it rains 13 days. The highest night temperatures could be experienced in July with 16 °C (61 °F), the lowest in January with -8 °C (18 °F).