Great Smoky Mountains National Park in September

Great Smoky Mountains National Park in September is an autumn-transition visit, with early color possible at the highest elevations. Most lower-valley foliage changes later, so keep the scenic route flexible.

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Bright gold and red leaves shine through the fog in a forest.
Fall Colors Near Newfound GapNPS Photo
A clear sky with a vast snowy mountain scene.
Winter in the SmokiesNPS / Bob Carr

Conditions

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What to see and do in Great Smoky Mountains in September

Choose a September outing that fits the route, weather and effort involved.

A gravel lane runs between fences across the green fields of Cades Cove.
Morning in Cades Cove · NPS photo

Cades Cove

Choose the loop around its usual Wednesday vehicle-free schedule and allow extra time for slow scenic traffic.

September · Cades Cove

NPS Cades Cove guidance

Great Smoky Mountains weather in September

September’s normal high is 78°F and low is 56°F, with 4.34 inches of precipitation. The Gatlinburg 2 SW cooperative observer station sits at about 1,454 ft in the Tennessee gateway corridor, near the elevation of Sugarlands Visitor Center and the lower Newfound Gap Road. The park rises to 6,643 ft at Kuwohi, and the high country runs colder and snowier than this station, so treat these numbers as a lower-elevation guide and check a high-elevation forecast before a high-country trip.

Cooler Hotter
Jan
High47°F
Low27°F
Precip · in4.75
Feb
High51°F
Low29°F
Precip · in4.27
Mar
High59°F
Low35°F
Precip · in5.58
Apr
High69°F
Low42°F
Precip · in4.93
May
High75°F
Low51°F
Precip · in5.50
Jun
High80°F
Low59°F
Precip · in5.99
Jul
High83°F
Low63°F
Precip · in6.31
Aug
High82°F
Low62°F
Precip · in4.40
Sep
High78°F
Low56°F
Precip · in4.34
Oct
High69°F
Low44°F
Precip · in3.19
Nov
High58°F
Low34°F
Precip · in4.02
Dec
High50°F
Low29°F
Precip · in4.92
NOAA climate normals · 1991-2020NPS weather and forecast

Great Smoky Mountains crowds in September

September averages 1,195,307 recreation visits, 74% of the peak monthly average in October.

LowestLowModerateHighPeakAverage month: 1,068,610September
NPS visit averages · 2021–2025Full crowd calendar

Tips for your September visit

Check the approach before choosing the rest of the day.

Great Smoky Mountains road approaches Gatlinburg, Townsend and Cherokee reach different parts of the park. Main roads operate year-round, weather permitting. Kuwohi and Roaring Fork have seasonal vehicle closures. Lettered points are the reviewed entrance or access-area locations. They do not mark every road, trail or gate. Gatlinburg EntranceA Townsend EntranceB Cherokee EntranceCN
AGatlinburg EntranceBTownsend EntranceCCherokee Entrance
  • Park boundary
Park boundary: NPSUSGS topographic basemapNPS park mapsCampground / visitor-center coordinates: NPSSelected approach points: OpenStreetMap and NPS
Great Smoky Mountains overviewVisitation historyFall colors guide

How we built this page.

An independent guide using official data. Not affiliated with or endorsed by the National Park Service.

Crowds
2021–2025 monthly averages. NPS recreation visits, compared with the park’s own busiest month. Visits are not unique visitors or a count of people on a trail.
Weather
1991-2020 climate normals. NOAA’s Gatlinburg 2 SW, TN station. These describe typical weather at the station, not every part of the park or a forecast.
Roads & lodging
Normal seasonal schedules. NPS guidance and official operator information. Confirm access, hours and availability before you travel.
Historical records and data-quality checks
  • Visit history: 1979–2025 NPS monthly recreation visits.
  • Weather history: 1921–2025 daily observations, separate from climate normals. We average daily highs and lows and total the rain for each month.
  • Complete months only: every day must pass our quality checks for that metric. Missing or incomplete records stay blank; we never interpolate.
  • Excluded measurements: flagged, presumed-zero and lagged values. Trace rain counts as zero measurable rainfall.
NPS recreation visit dataNOAA climate normalsNOAA daily weather recordsNOAA data documentationNPS park information and conditionsGreat Smoky Mountains annual visit history