Marietta is a city of approximately 13,900 people in Ohio, United States. Located in the Eastern Time Zone at 39.4°N latitude.
Marietta has a humid continental climate. Average annual temperature is 54°F, with January lows around 24°F and July highs near 85°F. The city averages 43 inches of precipitation per year. The wettest month is typically July; the driest is November.