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Contents
- The climate of Great Smoky Mountains National Park
- The best time to visit Great Smoky Mountains National Park
- The worst time to visit Great Smoky Mountains National Park
- Spring weather in Great Smoky Mountains National Park
- Summer weather in Great Smoky Mountains National Park
- Autumn weather in Great Smoky Mountains National Park
- Winter weather in Great Smoky Mountains National Park
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average UV index
Breathtaking panorama of the Great Smoky Mountains National Park in Tennessee,
The climate of Great Smoky Mountains National Park
Positioned within the latitudes known for temperate weather conditions, Great Smoky Mountains National Park experiences a Humid subtropical climate, scientifically classified as Cfa under the Köppen climate classification. This essentially translates to a climate devoid of a dry season, endorsing the region with ample humidity throughout the year.
Impressive variations decorate the annual meteorological tapestry of this Park. Looking into the average monthly high temperatures, the park experiences a gradual climb from 37°F (2.8°C) in January to a peak of 71°F (21.7°C) in July, before descending back to 41°F (5°C) in December. Simultaneously, minimum temperatures also exhibit a similar pattern, bottoming out at 20°F (-6.7°C) in January and hitting a maximum of 55°F (12.8°C) from July to August, and eventually falling back to 25°F (-3.9°C) in December.
Precipitation pattern also holds an interesting story in this temperate zone. Great Smoky Mountains National Park hosts an annual rainfall steady between 4.3" (109mm) to 7.6" (193mm), retaining substantial wetness across all the months. Concurrently, snowfall data unveils a winter-dominant scenario, with the most sizeable snowfall of 18.1" (460mm) witnessed in February, reducing to zero from May to October, and then surging again to 14.3" (363mm) in December.
Impressive variations decorate the annual meteorological tapestry of this Park. Looking into the average monthly high temperatures, the park experiences a gradual climb from 37°F (2.8°C) in January to a peak of 71°F (21.7°C) in July, before descending back to 41°F (5°C) in December. Simultaneously, minimum temperatures also exhibit a similar pattern, bottoming out at 20°F (-6.7°C) in January and hitting a maximum of 55°F (12.8°C) from July to August, and eventually falling back to 25°F (-3.9°C) in December.
Precipitation pattern also holds an interesting story in this temperate zone. Great Smoky Mountains National Park hosts an annual rainfall steady between 4.3" (109mm) to 7.6" (193mm), retaining substantial wetness across all the months. Concurrently, snowfall data unveils a winter-dominant scenario, with the most sizeable snowfall of 18.1" (460mm) witnessed in February, reducing to zero from May to October, and then surging again to 14.3" (363mm) in December.
The best time to visit Great Smoky Mountains National Park
When discussing the most suitable timeframe for visiting, contemplation of individual weather preferences becomes imperative. For those embracing warmer weather and longer daylight hours, the period from June to August serves as an ideal choice. During these months, the park enjoys temperatures ranging from 69°F (20.6°C) to 71°F (21.7°C) and boasts an abundant supply of daytime, providing between 14.1 hours to 14.5 hours of daylight. Concurrently, the UV index hits its annual maxima, reaching upto 10, consummating the perfect recipe for outdoor exploration.
The worst time to visit Great Smoky Mountains National Park
Contrarily, for the cold-sensitive individuals, the park might appear less inviting during the winter months encompassing December, January, and February. Minimum temperatures during these months plunge down into the 20s°F bracket, creating a frosty climate. Adding to the chilly conditions, snowfall escalates during January and February, accumulating to 16.6" (422mm) and 18.1" (460mm) respectively, further cementing the winter's icy grip over the park.
Spring weather in Great Smoky Mountains National Park
As the park transitions from the frosty winter months into the rejuvenating Spring season from March through May, weather conditions gradually warm up. During this period, maximum temperatures leap from 47°F (8.3°C) in March to 64°F (17.8°C) by May, while minimum temperatures make a similar bound from 28°F (-2.2°C) to 45°F (7.2°C) respectively. Concurrently, daylight hours also experience a significant enhancement, increasing from 12 hours in March to 14.1 hours in May, offering more lighting for outdoor activities.
Summer weather in Great Smoky Mountains National Park
From June to August, the park revels under the tutelage of the Summer sun. July and August share the title for the warmest months, with average maximum and minimum temperatures hovering around 70°F (21.1°C) and 55°F (12.8°C) respectively. The daylight hours peak between June and July, ushering in upto 14.5 hours of sunshine. Rainfall persists to keep the humidity high, with precipitation levels fluctuating from 6" (152mm) to 7.6" (193mm) during the summer months.
Autumn weather in Great Smoky Mountains National Park
Autumn or Fall in the park, spanning September through November, implies a gradual decrease in temperature from summer's heat to winter's chill. In September, the average maximum temperature remains pleasant at 65°F (18.3°C), dipping down to 48°F (8.9°C) by November. Simultaneously, the average minimum temperature drops from 50°F (10°C) in September to 30°F (-1.1°C) by November. Rainfall during this period ranges from 5.8" (147mm) in September to 6.7" (170mm) in November, contributing to the vibrant fall foliage scene.
Winter weather in Great Smoky Mountains National Park
The arrival of December ushers in the Winter season and persists until February. During this frigid period, the average maximum temperature drops down to 41°F (5°C) by December and hovers in 40s°F before warming up to 47°F (8.3°C) in February. Conversely, minimum temperatures oscillate between 20°F (-6.7°C) to 28°F (-2.2°C). These cold conditions are complemented by significant snowfall, peaking at 18.1" (460mm) in February, leading to a picturesque snowy winter landscape, albeit a challenging one for visitors.
Weather in January
The onset of the new year in the Great Smoky Mountains National Park finds an enduring air of winter. Temperatures remain relatively low, and the conditions may warrant insulating gear for outdoor activities. With daylight hours just breaching the double digits, sunlight is limited and the UV index remains at a modest 3 units. Weather in January »
Weather in February
Winter holds the Great Smoky Mountains National Park in its frigid grasp well into February. Snowfall inches up from the previous month to reach 18.1" (460mm), the highest over the entire yearly cycle. With the snowfall, one might anticipate an increase in winter sports activities around the park. Weather in February »
Weather in March
As Great Smoky Mountains National Park segues into March, a definable increase in temperatures discerns the arrival of spring. The conversation of seasons from the icy winter to the reviving spring holds an attractive prospect for those favouring nature's rebirth. Weather in March »
Weather in April
Stepping into April, the Great Smoky Mountains National Park enjoys a palpable spring. The stark contrast from the dwindling winter and the emergent springtime marks a stark shift in the park's typical activities. Notably, the snowfall dips dramatically from March's 16.8" (427mm) to just 6.6" (168mm) in April. Weather in April »
Weather in May
May at the Great Smoky Mountains National Park incorporates bountiful sunshine and longer days, embracing the arrival of summer vibes. The shift from Spring to Summer is most notable in the absence of snowfall that was a humble 1.1" (28mm) in April. Weather in May »
Weather in June
Welcoming June, the Great Smoky Mountains National Park basks in summer-soaked days. The snow that marked the winter months has long dissipated, conquered by the flowering flora under the extended sunshine. Be on the lookout for regular rainfall that cools the warm temperatures, maintaining pleasant weather conditions. Weather in June »
Weather in July
July witnesses the Great Smoky Mountains National Park at its warmest, fully embracing the high summer. Temperatures are at their peak with the snow being merely a memory from the first quarter of the year. The average rainfall elevates to 7.6" (193mm), the highest for the entire year, providing timely relief during the mid-summer blaze. Weather in July »
Weather in August
August heralds the waning of summer at the Great Smoky Mountains National Park. Cooler winds may be felt, signaling the approaching conclusion of the summer season. While temperatures retain their warm feel, rainfall takes a significant dip from a peaky July, dropping to 4.5" (114mm). Weather in August »
Weather in September
The arrival of September in Great Smoky Mountains National Park sets the stage for a mild beginning of the fall season. The park starts its transformation into a sea of golds, oranges, and deep reds, offering a kaleidoscope of autumn colors. Weather in September »
Weather in October
October immerses the Great Smoky Mountains National Park deeply into the fall. With the arrival of the cooler months, the rain recedes, and vegetation takes on spectacular mixes of colors in true autumn fashion. In contrast to the abundant sunshine in September, the first snowflakes appear in October, around 1.9" (48mm), reminding the visitors of the approaching winter season. Weather in October »
Weather in November
Moving into November, the Great Smoky Mountains National Park prepares for the transition from fall to winter. The snowfall average increases marginally from 1.9" (48mm) in October to 6.1" (155mm), providing the earliest signs of the winter season. Weather in November »
Weather in December
December brings winter back in full swing to the Great Smoky Mountains National Park. The snow, now robust compared to the previous month, blankets the park in a fresh white layer. It adds up to 14.3" (363mm), the second-highest contribution to the yearly snowfall, painting the Park in winter wonderland hues. Weather in December »
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
In Great Smoky Mountains National Park, January registers the lowest temperatures, averaging 37°F (2.8°C) at the peak and 19.9°F (-6.7°C) at the lowest.
How many days does it rain?
Throughout the year, in Great Smoky Mountains National Park, there are 123 rainfall days, and 72.13" (1832mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
Throughout the year, there are 27 snowfall days, and 81.5" (2070mm) of snow is accumulated.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 6 days and accumulates 18.11" (460mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the month with the most sunshine?
The months with the most sunshine are May through July, with an average of 9h of sunshine.
When it does not snow?
In Great Smoky Mountains National Park, snow does not fall in June through September.
When are the longest days?
With an average of 14h and 30min of daylight, June has the longest days of the year in Great Smoky Mountains National Park.
When is the highest UV index?
June and July, with an average maximum UV index of 10, are months with the highest UV index.
What time of the year is the hottest in Great Smoky Mountains National Park?
July is Great Smoky Mountains National Park's warmest month, registering average high temperatures of 71.1°F (21.7°C) and lows of 55°F (12.8°C).
What is the wettest month?
The month with the most rainfall is July, when the rain falls for 14 days and typically aggregates up to 7.6" (193mm) of precipitation.
What is the driest month?
October is the month with the least rainfall. Rain falls for 8 days and accumulates 4.33" (110mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 4h of sunshine.
When is the lowest UV index?
With an average maximum UV index of 2, December is the month with the lowest UV index.
Average temperature
Great Smoky Mountains National Park, TN
The warmest month (with the highest average high temperature) is July (71°F).
The month with the lowest average high temperature is January (37°F).
The months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is January (20°F).
Average rainfall
Great Smoky Mountains National Park, TN
The wettest month (with the highest rainfall) is July (7.6").
The driest month (with the least rainfall) is October (4.3").
Average rainfall days
Great Smoky Mountains National Park, TN
- Average rainfall days in January:
11 days - Average rainfall days in February:
9 days - Average rainfall days in March:
11 days - Average rainfall days in April:
10 days - Average rainfall days in May:
11 days - Average rainfall days in June:
12 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
11 days - Average rainfall days in September:
8 days - Average rainfall days in October:
8 days - Average rainfall days in November:
8 days - Average rainfall days in December:
10 days
The month with the highest number of rainy days is July (14 days).
The months with the least rainy days are September, October and November (8 days).
Average snowfall
Great Smoky Mountains National Park, TN
The month with the highest snowfall is February (18.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Great Smoky Mountains National Park, TN
- Average snowfall days in January:
7 days - Average snowfall days in February:
6 days - Average snowfall days in March:
5 days - Average snowfall days in April:
2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Great Smoky Mountains National Park, TN
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
The months with the most sunshine are May, June and July (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 4h).
Average UV index
Great Smoky Mountains National Park, TN
The months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).
Great Smoky Mountains National Park, Tennessee, USA
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