Weather on March 18 at Biscayne
Biscayne National Park
FLSoutheast
Avg High78°F
Avg Low66°F
Warmest202481°F
Coldest197860°F
Based on 56 years of data from Miami, FL
Planning Your Visit
March 18th in Biscayne National Park (via Miami, FL) typically brings pleasant spring weather, with average highs around 78°F and lows near 66°F. Over 56 years of records, the warmest March 18th was in 2024 (81°F average), while the coldest was 1978 (60°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 23% of March 18th dates historically, with the wettest March 18th recording 5.84" of rain. The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
Planning for March 18th in Biscayne? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 68°F | 56°F | 0.38" | -- |
| 2025 | 85°F | 56°F | 0" | -- |
| 2024 | 90°F | 73°F | 0" | -- |
| 2023 | 79°F | 68°F | 0" | -- |
| 2022 | 87°F | 71°F | 0" | -- |
| 2021 | 74°F | 70°F | 0" | -- |
| 2020 | 80°F | 72°F | 0" | -- |
| 2019 | 81°F | 69°F | 0" | -- |
| 2018 | 81°F | 51°F | 0" | -- |
| 2017 | 71°F | 60°F | 0" | -- |
| 2016 | 81°F | 69°F | 0" | -- |
| 2015 | 80°F | 67°F | 0" | -- |
| 2014 | 82°F | 74°F | 0" | -- |
| 2013 | 76°F | 69°F | 0" | -- |
| 2012 | 80°F | 71°F | 0" | -- |
| 2011 | 80°F | 63°F | 0" | -- |
| 2010 | 66°F | 57°F | 0.25" | 0" |
| 2009 | 80°F | 66°F | 5.84" | 0" |
| 2008 | 77°F | 72°F | 0" | -- |
| 2007 | 73°F | 56°F | 0" | -- |
| 2006 | 78°F | 65°F | 0" | 0" |
| 2005 | 74°F | 56°F | 3.66" | 0" |
| 2004 | 82°F | 73°F | 0" | 0" |
| 2003 | 87°F | 66°F | 2.21" | 0" |
| 2002 | 82°F | 68°F | 0" | 0" |
| 2001 | 88°F | 70°F | 0" | 0" |
| 2000 | 79°F | 69°F | 0.13" | 0" |
| 1999 | 76°F | 71°F | 0" | 0" |
| 1998 | 74°F | 70°F | 0" | 0" |
| 1997 | 77°F | 72°F | 0" | 0" |
| 1996 | 81°F | 71°F | 0" | 0" |
| 1995 | 81°F | 63°F | 1.83" | 0" |
| 1994 | 78°F | 68°F | 0" | 0" |
| 1993 | 77°F | 65°F | 1.02" | 0" |
| 1992 | 77°F | 67°F | 0" | 0" |
| 1991 | 86°F | 73°F | 0.08" | 0" |
| 1990 | 73°F | 65°F | 0.13" | 0" |
| 1989 | 77°F | 72°F | 0.03" | 0" |
| 1988 | 74°F | 67°F | 0" | 0" |
| 1987 | 75°F | 70°F | 0" | 0" |
| 1986 | 78°F | 70°F | 0" | 0" |
| 1985 | 71°F | 59°F | 0.84" | 0" |
| 1984 | 80°F | 65°F | 0" | 0" |
| 1983 | 78°F | 68°F | 0" | 0" |
| 1982 | 85°F | 73°F | 0" | 0" |
| 1981 | 81°F | 62°F | 0.03" | 0" |
| 1980 | 80°F | 73°F | 0" | 0" |
| 1979 | 72°F | 67°F | 0" | 0" |
| 1978 | 67°F | 53°F | 0" | 0" |
| 1977 | 81°F | 72°F | 0" | 0" |
| 1976 | 70°F | 59°F | 0" | 0" |
| 1975 | 80°F | 73°F | 0" | 0" |
| 1974 | 74°F | 57°F | 0" | 0" |
| 1973 | 73°F | 53°F | 0" | 0" |
| 1972 | 80°F | 63°F | 0" | 0" |
| 1971 | 74°F | 58°F | 0" | 0" |
March 18 at Nearby Parks
Holiday Weather at Biscayne
Official NPS WebsiteVisit nps.gov/bisc for park information, alerts, and reservations
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