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Is it too cold to swim in Deep Creek Lake today?
The latest reading is 58°F (14.2°C), measured November 5, 2026 at 7:00 AM EST at Deep Creek Lake near Thayerville, MD. That is very cold water.
Between 50°F and 60°F, rated very dangerous to immediately life-threatening: the range where most unacclimated people have a maximum cold shock response. Temperature is only one factor: check rip current and surf alerts, and swim near lifeguards.
How cold is too cold to swim?Water temperature this week
Hourly water temperature at Deep Creek Lake near Thayerville, MD
Frequently asked questions
Is it too cold to swim in Deep Creek Lake today?
The latest reading is 58°F (14.2°C), measured November 5, 2026 at 7:00 AM EST at Deep Creek Lake near Thayerville, MD. That is very cold water. Between 50°F and 60°F, rated very dangerous to immediately life-threatening: the range where most unacclimated people have a maximum cold shock response. Temperature is only one factor: check rip current and surf alerts, and swim near lifeguards. How cold is too cold?
Where does this water temperature come from?
From Deep Creek Lake near Thayerville, MD, a lake gauge operated by U.S. Geological Survey, 0.8 mi away. See the methodology.
Sources: U.S. Geological Survey; forecast and alerts from the National Weather Service. Readings are provisional. All Maryland water temperatures · Methodology