Current Water Temperature
at Deep Creek Lake Near Thayerville, MD

Yesterday's water temperature for Deep Creek Lake Near Thayerville, MD was between 78.26°F and 80.24°F with an average of 79.16°F. This is warmer than the historical average for July.

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Water temperature by month

Month Average Temperature (°F) Average Temperature (°C)
January 34.96 1.64
February 36.10 2.28
March 41.71 5.40
April 49.89 9.94
May 58.67 14.82
June 70.11 21.17
July 76.63 24.80
August 76.28 24.60
September 70.57 21.43
October 59.32 15.18
November 47.10 8.39
December 37.52 3.07

These monthly temperatures are averages of the available data from the following years: 2024, 2023, 2022, 2021, 2020.

Site location

  • Latitude: 39.51125
  • Longitude: -79.29838889
  • Altitude: 2462 feet
  • Altitude Accuracy: Within 1.6 feet
  • Map: View on Google Maps

About this data

This data was sourced from the US Geological Survey, "the science arm of the Department of the Interior bringing an array of earth, water, biological, and mapping data and expertise to bear in support of decision-making on environmental, resource, and public safety issues."

  • Agency: USGS
  • Site Number: 03075871
  • Site Name: Deep Creek Lake Near Thayerville, Md
  • Hydrologic Unit Code: 05020006

Is it warm enough for swimming?

Water temperatures can vary significantly based on the location and time of year. Generally, swimming is considered comfortable in water temperatures between 78°F (25°C) and 82°F (28°C). Cooler temperatures can be refreshing, but if the water temperature drops below 70°F (21°C), prolonged exposure can be uncomfortable without a wetsuit.

Should you wear a wetsuit?

Wetsuits provide insulation and buoyancy, making them ideal for swimming in cooler waters. Here are some general guidelines for wetsuit use:

  • 70°F (21°C) and above: No wetsuit needed for most people.
  • 65°F - 70°F (18°C - 21°C): A thin wetsuit (2mm - 3mm) is recommended.
  • 60°F - 65°F (15°C - 18°C): A thicker wetsuit (4mm - 5mm) is recommended.
  • Below 60°F (15°C): A full wetsuit with a hood, gloves, and booties is recommended for safety and comfort.