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Climate

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  CLIMATE OVERVIEW
  

St. Mary's County, Maryland, gets 45 inches of rain per year. The US average is 39. Snowfall is 14 inches. The average US city gets 26 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, Maryland. The July high is around 88 degrees. The January low is 27. Sperling's comfort index for St. Mary's County is a 55 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.

  CLIMATESt. Mary's, MarylandUnited States
  Rainfall (in.)  44.539.2
  Snowfall (in.)  13.625.8
  Precipitation Days  111102
  Sunny Days  203205
  Avg. July High  87.886.1
  Avg. Jan. Low  27.322.6
  Comfort Index (higher=better)  5554
  UV Index  44.3
  Elevation ft.  681,443

  CLIMATE MAP

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