Weather on September 20 at Great Smoky Mountains
Great Smoky Mountains National Park
Based on 55 years of data from Gatlinburg, TN
Elevation Note: Great Smoky Mountains sits at 4,900 ft. Expect temperatures 17°F cooler than the data shown below, which comes from Gatlinburg, TN at a lower elevation.
Planning Your Visit
September 20th in Great Smoky Mountains National Park (via Gatlinburg, TN) typically brings pleasant fall weather, with average highs around 78°F and lows near 54°F. Over 55 years of records, the warmest September 20th was in 2002 (77°F average), while the coldest was 1981 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 18% of September 20th dates historically, with the wettest September 20th recording 1.8" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 20th in Great Smoky Mountains? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 78°F | 57°F | 0" | 0" |
| 2024 | 78°F | 58°F | 0" | 0" |
| 2023 | 72°F | 49°F | 0" | 0" |
| 2022 | 76°F | 54°F | 0" | 0" |
| 2021 | 77°F | 65°F | 0.41" | 0" |
| 2020 | 66°F | 51°F | 0" | 0" |
| 2019 | 74°F | 62°F | 0" | 0" |
| 2018 | 80°F | 62°F | 0" | 0" |
| 2017 | 81°F | 57°F | 0" | 0" |
| 2016 | 79°F | 58°F | 0" | 0" |
| 2015 | 81°F | 55°F | 0" | 0" |
| 2014 | 77°F | 53°F | 0" | 0" |
| 2013 | 74°F | 58°F | 0" | 0" |
| 2012 | 67°F | 49°F | 0" | 0" |
| 2011 | 71°F | 61°F | 0.51" | 0" |
| 2010 | 86°F | 58°F | 0" | 0" |
| 2009 | 75°F | 61°F | 1.09" | 0" |
| 2008 | 80°F | 52°F | 0" | 0" |
| 2007 | 82°F | 52°F | 0" | 0" |
| 2006 | 73°F | 54°F | 0.36" | 0" |
| 2005 | 86°F | 54°F | 0" | 0" |
| 2004 | 75°F | 43°F | 0" | 0" |
| 2003 | 81°F | 53°F | 0" | 0" |
| 2002 | 89°F | 64°F | 0" | 0" |
| 2001 | 70°F | 54°F | 0.74" | 0" |
| 2000 | 86°F | 49°F | 0" | 0" |
| 1999 | 84°F | 54°F | 0" | 0" |
| 1998 | 87°F | 60°F | 0" | 0" |
| 1997 | 89°F | 56°F | 0" | 0" |
| 1996 | 73°F | 44°F | 0" | 0" |
| 1995 | 81°F | 50°F | 0" | 0" |
| 1994 | 77°F | 49°F | 0" | 0" |
| 1993 | 80°F | 49°F | 0" | 0" |
| 1992 | 79°F | 58°F | 1.8" | 0" |
| 1991 | 67°F | 49°F | 0.33" | 0" |
| 1990 | 76°F | 58°F | 0.2" | 0" |
| 1989 | 74°F | 49°F | 0" | 0" |
| 1988 | 63°F | 41°F | 0" | 0" |
| 1987 | 67°F | 58°F | 0.81" | -- |
| 1986 | 77°F | 59°F | 0" | 0" |
| 1985 | 80°F | 50°F | 0" | 0" |
| 1984 | 76°F | 44°F | 0" | 0" |
| 1983 | 83°F | 57°F | 0" | 0" |
| 1982 | 80°F | 59°F | 0" | 0" |
| 1981 | 63°F | 39°F | 0" | 0" |
| 1980 | 81°F | 62°F | 0" | 0" |
| 1979 | 78°F | 53°F | 0" | 0" |
| 1978 | 81°F | 59°F | 0" | 0" |
| 1977 | 77°F | 58°F | 0.84" | 0" |
| 1976 | 82°F | 48°F | 0" | 0" |
| 1975 | 84°F | 52°F | 0" | 0" |
| 1974 | 81°F | 49°F | 0" | 0" |
| 1973 | 71°F | 44°F | 0" | 0" |
| 1972 | 85°F | 54°F | 0" | 0" |
| 1971 | 81°F | 58°F | 0" | 0" |
September 20 at Nearby Parks
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See historical weather for other dates
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