Weather on December 20 at Biscayne
Biscayne National Park
FLSoutheast
Avg High76°F
Avg Low65°F
Warmest201679°F
Coldest198148°F
Based on 55 years of data from Miami, FL
Planning Your Visit
December 20th in Biscayne National Park (via Miami, FL) typically brings pleasant winter weather, with average highs around 76°F and lows near 65°F. Over 55 years of records, the warmest December 20th was in 2016 (79°F average), while the coldest was 1981 (48°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 16% of December 20th dates historically, with the wettest December 20th recording 5.41" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Biscayne? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 67°F | 0" | -- |
| 2024 | 83°F | 68°F | 0" | -- |
| 2023 | 71°F | 52°F | 0" | -- |
| 2022 | 79°F | 69°F | 0" | -- |
| 2021 | 77°F | 74°F | 0" | -- |
| 2020 | 69°F | 62°F | 0" | -- |
| 2019 | 77°F | 50°F | 1.63" | -- |
| 2018 | 76°F | 72°F | 0" | -- |
| 2017 | 81°F | 68°F | 0" | -- |
| 2016 | 82°F | 76°F | 0" | -- |
| 2015 | 84°F | 66°F | 0" | -- |
| 2014 | 76°F | 64°F | 0" | -- |
| 2013 | 77°F | 64°F | 0" | -- |
| 2012 | 81°F | 68°F | 0" | -- |
| 2011 | 74°F | 70°F | 0" | -- |
| 2010 | 67°F | 50°F | 0" | 0" |
| 2009 | 68°F | 60°F | 0" | 0" |
| 2008 | 76°F | 66°F | 0" | 0" |
| 2007 | 79°F | 65°F | 0" | -- |
| 2006 | 76°F | 70°F | 0.1" | 0" |
| 2005 | 76°F | 64°F | 0" | 0" |
| 2004 | 74°F | 52°F | 0" | 0" |
| 2003 | 61°F | 51°F | 0" | 0" |
| 2002 | 81°F | 53°F | 0.05" | 0" |
| 2001 | 73°F | 58°F | 0" | 0" |
| 2000 | 78°F | 50°F | 0" | 0" |
| 1999 | 81°F | 69°F | 0" | 0" |
| 1998 | 78°F | 75°F | 0" | 0" |
| 1997 | 73°F | 70°F | 0" | 0" |
| 1996 | 80°F | 55°F | 0" | 0" |
| 1995 | 75°F | 68°F | 0.03" | 0" |
| 1994 | 75°F | 71°F | 0" | 0" |
| 1993 | 78°F | 69°F | 0" | 0" |
| 1992 | 80°F | 73°F | 0" | 0" |
| 1991 | 71°F | 65°F | 0" | 0" |
| 1990 | 83°F | 73°F | 0.03" | 0" |
| 1989 | 83°F | 72°F | 0.28" | 0" |
| 1988 | 75°F | 70°F | 0" | 0" |
| 1987 | 76°F | 72°F | 0" | 0" |
| 1986 | 81°F | 70°F | 0" | 0" |
| 1985 | 76°F | 59°F | 0" | 0" |
| 1984 | 74°F | 68°F | 0.03" | 0" |
| 1983 | 79°F | 72°F | 0" | 0" |
| 1982 | 74°F | 57°F | 0" | 0" |
| 1981 | 55°F | 41°F | 0" | 0" |
| 1980 | 75°F | 66°F | 0" | 0" |
| 1979 | 74°F | 64°F | 0" | 0" |
| 1978 | 77°F | 64°F | 0" | 0" |
| 1977 | 76°F | 61°F | 0" | 0" |
| 1976 | 77°F | 71°F | 0" | 0" |
| 1975 | 74°F | 65°F | 0" | 0" |
| 1974 | 76°F | 69°F | 0" | 0" |
| 1973 | 74°F | 62°F | 5.41" | 0" |
| 1972 | 78°F | 67°F | 0" | 0" |
| 1971 | 79°F | 70°F | 0.05" | 0" |
December 20 at Nearby Parks
Holiday Weather at Biscayne
Official NPS WebsiteVisit nps.gov/bisc for park information, alerts, and reservations
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