Marietta, OH has a humid continental climate with warm summers and cold winters. The average temperature in the summer is around 73°F (23°C), while the average temperature in the winter is around 34°F (1°C). Precipitation is fairly even throughout the year, with an annual average of 42 inches (1067 mm) of rainfall and generally moderate snowfall. Summers tend to be humid and hot, while winters can bring bitterly cold temperatures and snow storms.
Marietta, Ohio gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Marietta averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 172 sunny days per year in Marietta. The US average is 205 sunny days.
Marietta gets some kind of precipitation, on average, 145 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 85 degrees
Winter Low: the January low is 22
Rain: averages 42 inches of rain a year
Snow: averages 20 inches of snow a year