Weather on September 19 at Biscayne
Biscayne National Park
Based on 55 years of data from Miami, FL
Planning Your Visit
September 19th in Biscayne National Park (via Miami, FL) typically brings warm fall weather, with average highs around 87°F and lows near 77°F. Over 55 years of records, the warmest September 19th was in 1996 (86°F average), while the coldest was 1985 (75°F) — a 11°F range across recorded history. Rain or other precipitation has occurred on about 53% of September 19th dates historically, with the wettest September 19th recording 3.71" 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 September 19th in Biscayne? 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 | 86°F | 75°F | 0.64" | -- |
| 2024 | 92°F | 77°F | 0" | -- |
| 2023 | 93°F | 77°F | 1.52" | -- |
| 2022 | 90°F | 77°F | 0" | -- |
| 2021 | 90°F | 75°F | 0" | -- |
| 2020 | 86°F | 78°F | 0.89" | -- |
| 2019 | 86°F | 79°F | 0" | -- |
| 2018 | 90°F | 81°F | 0" | -- |
| 2017 | 87°F | 77°F | 0" | -- |
| 2016 | 88°F | 78°F | 0" | -- |
| 2015 | 87°F | 75°F | 3.05" | -- |
| 2014 | 86°F | 76°F | 0" | -- |
| 2013 | 83°F | 76°F | 0" | -- |
| 2012 | 87°F | 78°F | 0.25" | -- |
| 2011 | 89°F | 75°F | 0" | -- |
| 2010 | 87°F | 80°F | 0" | 0" |
| 2009 | 88°F | 79°F | 1.27" | 0" |
| 2008 | 88°F | 77°F | 0.25" | -- |
| 2007 | 86°F | 74°F | 1.27" | -- |
| 2006 | 90°F | 81°F | 0" | 0" |
| 2005 | 87°F | 77°F | 0.08" | 0" |
| 2004 | 85°F | 78°F | 0.03" | 0" |
| 2003 | 87°F | 75°F | 0" | 0" |
| 2002 | 89°F | 77°F | 0" | 0" |
| 2001 | 88°F | 75°F | 0" | 0" |
| 2000 | 87°F | 78°F | 0.48" | 0" |
| 1999 | 84°F | 74°F | 2.62" | 0" |
| 1998 | 85°F | 73°F | 3.25" | 0" |
| 1997 | 84°F | 77°F | 1.52" | 0" |
| 1996 | 94°F | 78°F | 1.09" | 0" |
| 1995 | 91°F | 77°F | 0.43" | 0" |
| 1994 | 89°F | 79°F | 0" | 0" |
| 1993 | 85°F | 78°F | 0.38" | 0" |
| 1992 | 85°F | 75°F | 1.35" | 0" |
| 1991 | 87°F | 78°F | 0" | 0" |
| 1990 | 87°F | 74°F | 2.44" | 0" |
| 1989 | 85°F | 72°F | 2.03" | 0" |
| 1988 | 84°F | 74°F | 0.51" | 0" |
| 1987 | 88°F | 81°F | 0.03" | 0" |
| 1986 | 86°F | 81°F | 0" | 0" |
| 1985 | 81°F | 70°F | 0.36" | 0" |
| 1984 | 82°F | 72°F | 3.71" | 0" |
| 1983 | 85°F | 81°F | 0" | 0" |
| 1982 | 86°F | 80°F | 0" | 0" |
| 1981 | 85°F | 77°F | 0" | 0" |
| 1980 | 83°F | 79°F | 0" | 0" |
| 1979 | 84°F | 81°F | 0" | 0" |
| 1978 | 85°F | 78°F | 0.08" | 0" |
| 1977 | 87°F | 80°F | 0.94" | 0" |
| 1976 | 84°F | 71°F | 1.8" | 0" |
| 1975 | 85°F | 75°F | 1.32" | 0" |
| 1974 | 87°F | 80°F | 0.05" | 0" |
| 1973 | 88°F | 77°F | 0" | 0" |
| 1972 | 87°F | 78°F | 0" | 0" |
| 1971 | 87°F | 77°F | 0" | 0" |