Weather on September 20 at Dry Tortugas
Dry Tortugas National Park
Based on 55 years of data from Key West, FL
Planning Your Visit
September 20th in Dry Tortugas National Park (via Key West, FL) typically brings warm fall weather, with average highs around 89°F and lows near 79°F. Over 55 years of records, the warmest September 20th was in 2017 (88°F average), while the coldest was 1984 (79°F) — a 9°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 20th dates historically, with the wettest September 20th recording 4.78" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Dry Tortugas? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 89°F | 78°F | 0" | -- |
| 2024 | 87°F | 78°F | 0" | -- |
| 2023 | 93°F | 80°F | 0.15" | -- |
| 2022 | 91°F | 76°F | 0.43" | -- |
| 2021 | 91°F | 78°F | 0" | -- |
| 2020 | 93°F | 82°F | 0" | -- |
| 2019 | 92°F | 80°F | 0.05" | -- |
| 2018 | 92°F | 77°F | 0.18" | -- |
| 2017 | 96°F | 81°F | -- | -- |
| 2016 | 91°F | 80°F | 0" | -- |
| 2015 | 86°F | 80°F | 0" | -- |
| 2014 | 85°F | 76°F | 0.1" | -- |
| 2013 | 86°F | 77°F | 4.06" | -- |
| 2012 | 85°F | 79°F | 0" | -- |
| 2011 | 88°F | 78°F | 0.13" | -- |
| 2010 | 88°F | 77°F | 0" | 0" |
| 2009 | 91°F | 82°F | 0" | 0" |
| 2008 | 88°F | 79°F | 0" | 0" |
| 2007 | 92°F | 78°F | 0.05" | -- |
| 2006 | 88°F | 78°F | 0" | 0" |
| 2005 | 83°F | 75°F | 4.78" | -- |
| 2004 | 88°F | 79°F | 0" | -- |
| 2003 | 90°F | 82°F | 0" | -- |
| 2002 | 88°F | 77°F | 1.73" | 0" |
| 2001 | 90°F | 77°F | 0" | 0" |
| 2000 | 90°F | 79°F | 0.43" | -- |
| 1999 | 88°F | 76°F | 1.27" | -- |
| 1998 | 88°F | 81°F | 0" | 0" |
| 1997 | 89°F | 76°F | 0" | 0" |
| 1996 | 90°F | 77°F | 0" | 0" |
| 1995 | 90°F | 78°F | 0" | 0" |
| 1994 | 90°F | 77°F | 0.89" | 0" |
| 1993 | 90°F | 80°F | 0.18" | 0" |
| 1992 | 88°F | 78°F | 0" | 0" |
| 1991 | 89°F | 80°F | 0" | 0" |
| 1990 | 88°F | 80°F | 0" | 0" |
| 1989 | 89°F | 80°F | 0" | 0" |
| 1988 | 89°F | 79°F | 0" | 0" |
| 1987 | 90°F | 81°F | 0.05" | 0" |
| 1986 | 89°F | 79°F | 0.58" | 0" |
| 1985 | 88°F | 77°F | 0.08" | 0" |
| 1984 | 81°F | 77°F | 3.78" | 0" |
| 1983 | 88°F | 79°F | 0.25" | 0" |
| 1982 | 87°F | 77°F | 0.43" | 0" |
| 1981 | 88°F | 79°F | 0.05" | 0" |
| 1980 | 90°F | 81°F | 0" | 0" |
| 1979 | 88°F | 80°F | 0.2" | 0" |
| 1978 | 89°F | 79°F | 0.28" | 0" |
| 1977 | 89°F | 82°F | 0" | 0" |
| 1976 | 89°F | 77°F | 0" | 0" |
| 1975 | 89°F | 76°F | 1.27" | 0" |
| 1974 | 89°F | 82°F | 0" | 0" |
| 1973 | 88°F | 78°F | 0" | 0" |
| 1972 | 87°F | 79°F | 0.58" | 0" |
| 1971 | 88°F | 75°F | 0.53" | 0" |