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Climate in St. Mary's County, Maryland

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ClimateSt. Mary's, MDUnited States
Rainfall (in.)44.136.5
Snowfall (in.)14.425
Precipitation Days111100
Sunny Days203205
Avg. July High87.486.5
Avg. Jan. Low26.420.5
Comfort Index (higher=better)4344
UV Index44.3
Elevation ft.681,443

St. Mary's County, MD, gets 44 inches of rain per year. The US average is 37. Snowfall is 14 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 111.

On average, there are 203 sunny days per year in St. Mary's County, MD. The July high is around 87 degrees. The January low is 26. Our comfort index, which is based on humidity during the hot months, is a 43 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

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