Weather on September 9 at Biscayne
Biscayne National Park
Based on 55 years of data from Miami, FL
Planning Your Visit
September 9th in Biscayne National Park (via Miami, FL) typically brings warm fall weather, with average highs around 87°F and lows near 78°F. Over 55 years of records, the warmest September 9th was in 2005 (86°F average), while the coldest was 1971 (78°F) — a 8°F range across recorded history. Rain or other precipitation has occurred on about 49% of September 9th dates historically, with the wettest September 9th recording 9.4" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for September 9th 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 | 91°F | 74°F | 5.66" | -- |
| 2024 | 91°F | 78°F | 0.38" | -- |
| 2023 | 90°F | 78°F | 0" | -- |
| 2022 | 93°F | 74°F | 1.02" | -- |
| 2021 | 89°F | 78°F | 0" | -- |
| 2020 | 87°F | 79°F | 0" | -- |
| 2019 | 87°F | 79°F | 0" | -- |
| 2018 | 85°F | 76°F | 0.28" | -- |
| 2017 | 92°F | 77°F | 0.51" | -- |
| 2016 | 86°F | 80°F | 0.25" | -- |
| 2015 | 89°F | 81°F | 0" | -- |
| 2014 | 87°F | 77°F | 0" | -- |
| 2013 | 86°F | 76°F | 0" | -- |
| 2012 | 89°F | 82°F | 0" | -- |
| 2011 | 89°F | 76°F | 3.73" | -- |
| 2010 | 89°F | 76°F | 0" | 0" |
| 2009 | 88°F | 78°F | 1.09" | 0" |
| 2008 | 88°F | 83°F | 0.08" | 0" |
| 2007 | 86°F | 74°F | 1.35" | -- |
| 2006 | 89°F | 80°F | 0.05" | 0" |
| 2005 | 94°F | 79°F | 0" | 0" |
| 2004 | 86°F | 77°F | 0.15" | 0" |
| 2003 | 85°F | 78°F | 0" | 0" |
| 2002 | 89°F | 77°F | 0" | 0" |
| 2001 | 82°F | 74°F | 9.4" | 0" |
| 2000 | 88°F | 77°F | 0.51" | 0" |
| 1999 | 87°F | 76°F | 0.36" | 0" |
| 1998 | 90°F | 80°F | 0" | 0" |
| 1997 | 85°F | 81°F | 0" | 0" |
| 1996 | 82°F | 76°F | 1.93" | 0" |
| 1995 | 89°F | 77°F | 0.2" | 0" |
| 1994 | 88°F | 82°F | 0" | 0" |
| 1993 | 89°F | 77°F | 3.51" | 0" |
| 1992 | 87°F | 79°F | 0" | 0" |
| 1991 | 84°F | 71°F | 0.58" | 0" |
| 1990 | 87°F | 82°F | 0" | 0" |
| 1989 | 86°F | 77°F | 0.05" | 0" |
| 1988 | 87°F | 82°F | 0.05" | 0" |
| 1987 | 88°F | 81°F | 0" | 0" |
| 1986 | 85°F | 79°F | 0" | 0" |
| 1985 | 85°F | 75°F | 0.15" | 0" |
| 1984 | 89°F | 74°F | 0" | 0" |
| 1983 | 87°F | 82°F | 0.05" | 0" |
| 1982 | 87°F | 80°F | 0" | 0" |
| 1981 | 86°F | 73°F | 0" | 0" |
| 1980 | 85°F | 73°F | 0" | 0" |
| 1979 | 84°F | 78°F | 1.27" | 0" |
| 1978 | 87°F | 79°F | 0" | 0" |
| 1977 | 87°F | 80°F | 0" | 0" |
| 1976 | 86°F | 77°F | 0.66" | 0" |
| 1975 | 86°F | 82°F | 0" | 0" |
| 1974 | 88°F | 77°F | 0" | 0" |
| 1973 | 86°F | 76°F | 0" | 0" |
| 1972 | 82°F | 76°F | 3.48" | 0" |
| 1971 | 85°F | 71°F | 2.03" | 0" |