January weather forecast
Great Smoky Mountains National Park, TN

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Breathtaking panorama of the Great Smoky Mountains National Park in Tennessee,
Breathtaking panorama of the Great Smoky Mountains National Park in Tennessee,

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. There's a notable amount of snow during this time, with January average snowfall contribution being the third highest around the year at about 16.6" (422mm). Evenings bring a mix of starlit skies and white, snowy grounds providing mystic landscapes for winter enthusiasts.

Temperature

January, recording an average high temperature of 37°F (2.8°C) and a low temperature of 19.9°F (-6.7°C), is Great Smoky Mountains National Park's coldest month.

Rainfall

In Great Smoky Mountains National Park, during January, the rain falls for 11 days and regularly aggregates up to 6.22" (158mm) of precipitation. Throughout the year, in Great Smoky Mountains National Park, there are 123 rainfall days, and 72.13" (1832mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Great Smoky Mountains National Park, Tennessee. In Great Smoky Mountains National Park, Tennessee, in January, during 7 snowfall days, 16.57" (421mm) of snow is typically accumulated. Throughout the year, there are 27 snowfall days, and 81.5" (2070mm) of snow is accumulated.

Daylight

The average length of the day in January in Great Smoky Mountains National Park is 10h and 4min.
On the first day of the month, sunrise is at 7:43 am and sunset at 5:31 pm. On the last day of January, sunrise is at 7:34 am and sunset at 6:00 pm EST.

Sunshine

In Great Smoky Mountains National Park, the average sunshine in January is 5h.

UV index

In January, the average daily maximum UV index in Great Smoky Mountains National Park is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the UV index of 3 transforms into the following advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What part of the year is the coldest in Great Smoky Mountains National Park?

January, with its average high-temperature of 37°F (2.8°C) and an average low-temperature of 19.9°F (-6.7°C), holds the record as the coldest month in Great Smoky Mountains National Park, Tennessee.

How cold is January in Great Smoky Mountains National Park?

The average high-temperature, in January, in Great Smoky Mountains National Park, is 37°F (2.8°C), while the average low-temperature is 19.9°F (-6.7°C).

How many days does it rain in January in Great Smoky Mountains National Park?

In January, in Great Smoky Mountains National Park, Tennessee, the rain falls for 11 days. Throughout January, 6.22" (158mm) of precipitation is accumulated.

How many days does it snow in January in Great Smoky Mountains National Park?

In Great Smoky Mountains National Park, Tennessee, in January, snow falls for 7 days, with typically accumulated 16.57" (421mm) of snow.

How many hours of daylight does Great Smoky Mountains National Park have in January?

The average day length in January in Great Smoky Mountains National Park is 10h and 4min.

What time are sunrise and sunset in January in Great Smoky Mountains National Park?

On the first day of January in Great Smoky Mountains National Park, Tennessee, sunrise is at 7:43 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:00 pm EST.

How many hours of sunshine does Great Smoky Mountains National Park have in January?

In January, the average sunshine duration in Great Smoky Mountains National Park is 5h.

What is the UV index reading in January in Great Smoky Mountains National Park?

In Great Smoky Mountains National Park, the average daily maximum UV index in January is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Great Smoky Mountains National Park, TN

Average temperature in January - Great Smoky Mountains National Park, TN
  • Average high temperature in January: 37°F

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).

  • Average low temperature in January: 20°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).

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Average rainfall in January
Great Smoky Mountains National Park, TN

Average rainfall in January - Great Smoky Mountains National Park, TN
  • Average rainfall in January: 6.2"

The wettest month (with the highest rainfall) is July (7.6").
The driest month (with the least rainfall) is October (4.3").

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Average rainfall days in January
Great Smoky Mountains National Park, TN

Average rainfall days in January - Great Smoky Mountains National Park, TN
  • Average rainfall days in January: 11 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).

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Average snowfall in January
Great Smoky Mountains National Park, TN

Average snowfall in January - Great Smoky Mountains National Park, TN
  • Average snowfall in January: 16.6"

The month with the highest snowfall is February (18.1").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Great Smoky Mountains National Park, TN

Average snowfall days in January - Great Smoky Mountains National Park, TN
  • Average snowfall days in January: 7 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).

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Average daylight in January /
Average sunshine in January
Great Smoky Mountains National Park, TN

Average daylight in January / Average sunshine in January - Great Smoky Mountains National Park, TN
  • Average daylight in January: 10h and 1min

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).

  • Average sunshine in January: 5h

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).

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Average UV index in January
Great Smoky Mountains National Park, TN

Average UV index in January - Great Smoky Mountains National Park, TN
  • Average UV index in January: 3

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).

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Great Smoky Mountains National Park, Tennessee, USA

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