Weather on August 31 at Dry Tortugas
Dry Tortugas National Park
Based on 55 years of data from Key West, FL
Planning Your Visit
August 31st in Dry Tortugas National Park (via Key West, FL) typically brings warm summer weather, with average highs around 89°F and lows near 79°F. Over 55 years of records, the warmest August 31st was in 2004 (88°F average), while the coldest was 1977 (78°F) — a 10°F range across recorded history. Rain or other precipitation has occurred on about 53% of August 31st dates historically, with the wettest August 31st recording 3.81" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for August 31st 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 | 98°F | 78°F | 1.02" | -- |
| 2024 | 94°F | 79°F | -- | -- |
| 2023 | 93°F | 82°F | 0.03" | -- |
| 2022 | 91°F | 82°F | 0" | -- |
| 2021 | 92°F | 81°F | 0" | -- |
| 2020 | 93°F | 81°F | 0" | -- |
| 2019 | 90°F | 80°F | 0.1" | -- |
| 2018 | 89°F | 75°F | 0.05" | -- |
| 2017 | 90°F | 82°F | 0.58" | -- |
| 2016 | 83°F | 80°F | 0.64" | -- |
| 2015 | 91°F | 81°F | 0" | -- |
| 2014 | 89°F | 78°F | 0.18" | -- |
| 2013 | 89°F | 77°F | 0.03" | -- |
| 2012 | 89°F | 80°F | 0.2" | -- |
| 2011 | 87°F | 76°F | 0.66" | -- |
| 2010 | 83°F | 76°F | 0.76" | 0" |
| 2009 | 91°F | 81°F | 0" | 0" |
| 2008 | 89°F | 75°F | 3.81" | 0" |
| 2007 | 90°F | 80°F | 0" | 0" |
| 2006 | 83°F | 77°F | 0" | 0" |
| 2005 | 88°F | 79°F | 0" | 0" |
| 2004 | 94°F | 83°F | 0" | -- |
| 2003 | 88°F | 77°F | -- | -- |
| 2002 | 92°F | 80°F | 0" | -- |
| 2001 | 90°F | 85°F | 0.08" | 0" |
| 2000 | 91°F | 82°F | 0" | -- |
| 1999 | 92°F | 83°F | 0" | -- |
| 1998 | 89°F | 77°F | 0" | 0" |
| 1997 | 82°F | 73°F | 3.33" | 0" |
| 1996 | 90°F | 75°F | 0" | 0" |
| 1995 | 91°F | 81°F | 0.18" | 0" |
| 1994 | 90°F | 80°F | 0" | 0" |
| 1993 | 89°F | 77°F | 0.05" | 0" |
| 1992 | 90°F | 82°F | 0.2" | 0" |
| 1991 | 88°F | 81°F | 0" | 0" |
| 1990 | 88°F | 77°F | 0.13" | 0" |
| 1989 | 90°F | 80°F | 3.66" | 0" |
| 1988 | 89°F | 81°F | 0.18" | 0" |
| 1987 | 89°F | 78°F | 0.91" | 0" |
| 1986 | 90°F | 76°F | 0.33" | 0" |
| 1985 | 90°F | 82°F | 0" | 0" |
| 1984 | 89°F | 82°F | 0" | 0" |
| 1983 | 89°F | 80°F | 0" | 0" |
| 1982 | 90°F | 80°F | 0.08" | 0" |
| 1981 | 90°F | 81°F | 0" | 0" |
| 1980 | 87°F | 78°F | 0.18" | 0" |
| 1979 | 90°F | 81°F | 0" | 0" |
| 1978 | 90°F | 80°F | 0" | 0" |
| 1977 | 81°F | 75°F | 3.07" | 0" |
| 1976 | 90°F | 78°F | 0.08" | 0" |
| 1975 | 91°F | 81°F | 0" | 0" |
| 1974 | 91°F | 78°F | 0.18" | 0" |
| 1973 | 87°F | 78°F | 0.2" | 0" |
| 1972 | 87°F | 77°F | 0.05" | 0" |
| 1971 | 90°F | 79°F | 0" | 0" |