From March through May the average daytime temperature reaches approximately 45 degrees Fahrenheit with lows dipping into the 30s. Rainfall during the spring months averages approximately 10 inches. Summer temperatures, from June through August, will generally range from the lower 70’s to middle 80s with an average water-surface temperature of 73 degrees Fahrenheit. This makes the lake a great spot for people looking for a place to beat the summer heat and humidity of the city. Deep Creek Lake receives approximately 4 1/2 inches of rain per month during the summer. The average warmest month is July and the highest temperature ever recorded was 97 degrees Fahrenheit in August of 1988. From September through November the temperature averages 62 degrees Fahrenheit during the day with lows dropping into the upper 30s to lower 40s at night. Rainfall during the fall totals approximately 3 1/2 inches per month.

In December, January, and February the average daily high temperature is 37 degrees Fahrenheit with an average nightly low of 17 degrees Fahrenheit. The area sees an average snowfall of 105 inches per year, almost twice that of Fairbanks, Alaska! In fact, some years Deep Creek Lake can experience over 200 inches of snowfall. Deep Creek Lake is also a popular spot for ice fishing, with the lake developing over 18 inches of ice cover during the winter months of January and February.

One of the most reliable forecasts for Deep Creek Lake weather is the National Weather Service (NWS). Its mission is to provide weather, water/climate data, forecasts, and warnings for not only Deep Creek Lake, Maryland, but the entire United States.

Lake & Air Temperature at Deep Creek Lake, Maryland

The Deep Creek Times has installed a weather gauge which is located towards the northern end of Deep Creek Lake. This gauge measures the current surface temperature as well as the ambient air temperature. Additionally, the gauge is installed close to the surface of the water in the off-season, so temperature readings may vary:

Deep Creek Lake Monthly Weather Averages

Weather averages are based on historical data for Deep Creek Lake over the past ten (10) years.

Month January February March April May June July August September October November December
Avg. Temperatures Hi 32°F Lo 19°F Hi 36°F Lo 22°F Hi 46°F Lo 30°F Hi 57°F Lo 39°F Hi 69°F Lo 49°F Hi 76°F Lo 55°F Hi 81°F Lo 59°F Hi 79°F Lo 57°F Hi 72°F Lo 52°F Hi 59°F Lo 43°F Hi 47°F Lo 32°F Hi 38°F Lo 27°F
Avg. Wind Speed 9 mph 9 mph 8 mph 8 mph 7 mph 6 mph 5 mph 5 mph 6 mph 7 mph 7 mph 8 mph
Avg. Precipitation 4.1 in 5.2 in 4.4 in 5.3 in 7.1 in 6.4 in 6 in 5.2 in 4.9 in 5.2 in 3.5 in 4.6 in
Average Humidity 86% 87% 81% 80% 80% 78% 78% 79% 79% 81% 79% 85%
Avg. Cloud Cover 69% 67% 58% 52% 48% 42% 39% 38% 41% 48% 48% 64%
Pressure Average 30.1 in 30.1 in 30.1 in 30.0 in 30.0 in 30.0 in 30.0 in 30.0 in 30.1 in 30.0 in 30.1 in 30.1 in
Average Dry Days 6 5 12 16 20 21 22 24 23 21 15 9
Avg. Precip. Days 6 7 7 10 11 9 9 7 7 8 6 7
Avg. Snow Days 20 16 12 5 1 0 0 0 0 3 9 15
Average Fog Days 7 7 8 6 10 10 11 11 12 9 6 6
Average UV Index 1 2 2 4 5 6 5 5 3 2 2 1
Avg. Hours of Sun 173 161 229 243 280 299 319 326 300 264 247 195