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Great Smoky Mountains National Park Climate by Month

The climate in Great Smoky Mountains National Park is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to cold in the cooler months. It is also known for its large amounts of rain/snowfall. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Great Smoky Mountains National Park, temperatures differ significantly between summer and winter months. Typically, daytime temperatures range from a comfortable 25°C in August to a chilly 6°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to -6°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Great Smoky Mountains National Park experiences significant rain/snowfall throughout the year, averaging 1875 mm of precipitation annually. Great Smoky Mountains National Park offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between July (211 mm) and February (120 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Great Smoky Mountains National Park serves as an ideal destination. Expect longer, more sun-filled days in June with an average of 9.7 hours of sunshine daily, and embrace the darker days in December, offering only 4.2 hours of daily sunlight.

Monthly hours of sunshine

Data from: Knoxville, the United States of America (54 KM, 34 Miles).

Daily hours of sunshine

Data from: Knoxville, the United States of America (54 KM, 34 Miles).

The best time of year to visit Great Smoky Mountains National Park in the United States of America

During the months of May, June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Great Smoky Mountains National Park?
    Most rainfall (rainy season) is seen in January, April, June, July and December.
  • Which is the warmest month in Great Smoky Mountains National Park?
    August has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Great Smoky Mountains National Park?
    The coldest month is January with an average maximum temperature of 6°C.
  • Which is the wettest month in Great Smoky Mountains National Park?
    July tops the wettest month list with 211 mm of rainfall.
  • Which is the driest month in Great Smoky Mountains National Park?
    February is the driest month with 120 mm of precipitation.
  • Which is the sunniest month in Great Smoky Mountains National Park?
    June is the sunniest month with an average of 290 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Great Smoky Mountains National Park

    Fri   Nov 22
    1°C | -5°C
    NW 22 km/h
    8.6 mm
    broken clouds and snow

    broken clouds and snow

    Sat   Nov 23
    8°C | -2°C
    NW 11 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    15°C | -1°C
    W 4 km/h
    clear and no rain

    clear and no rain