Weather on March 21
Port Saint Lucie, FL
55 Years of Data
Avg High
79°F
Avg Low
61°F
Warmest
1982
83°F avg
Coldest
1981
54°F avg
About This Date
March 21st in Port Saint Lucie, FL typically brings pleasant spring weather, with average highs around 79°F and lows near 61°F. Over 56 years of records, the warmest March 21st was in 1982 (83°F average), while the coldest was 1981 (54°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 30% of March 21st dates historically, with the wettest March 21st recording 2.59" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Port Saint Lucie, FL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 74° | 61° | 67° | 0.05" | — |
| 2025 | 82° | 56° | 69° | — | — |
| 2024 | 73° | 62° | 68° | — | — |
| 2023 | 67° | 56° | 61° | 0.05" | — |
| 2022 | 78° | 69° | 74° | — | — |
| 2021 | 76° | 57° | 66° | — | — |
| 2020 | 80° | 74° | 77° | — | — |
| 2019 | 74° | 63° | 68° | 0.13" | — |
| 2018 | 89° | 51° | 70° | 0.38" | — |
| 2017 | 73° | 59° | 66° | — | — |
| 2016 | 78° | 57° | 68° | 0.81" | — |
| 2015 | 85° | 71° | 78° | — | — |
| 2014 | 78° | 65° | 71° | — | — |
| 2013 | 78° | 59° | 69° | — | — |
| 2012 | 76° | 72° | 74° | 0.25" | — |
| 2011 | 79° | 63° | 71° | — | — |
| 2010 | 72° | 50° | 61° | — | — |
| 2009 | 75° | 63° | 69° | 0.48" | — |
| 2008 | 81° | 65° | 73° | 0.2" | — |
| 2007 | 77° | 67° | 72° | 0.08" | — |
| 2006 | 84° | 66° | 75° | — | — |
| 2005 | 77° | 75° | 76° | — | — |
| 2004 | 79° | 59° | 69° | — | — |
| 2003 | 90° | 74° | 82° | — | — |
| 2002 | 88° | 69° | 78° | 0.05" | — |
| 2001 | 68° | 50° | 59° | — | — |
| 2000 | 82° | 63° | 72° | — | — |
| 1999 | 83° | 60° | 71° | — | — |
| 1998 | 84° | 59° | 72° | 0.05" | — |
| 1997 | 81° | 60° | 70° | 2.57" | — |
| 1996 | 69° | 45° | 57° | — | — |
| 1995 | 82° | 61° | 71° | — | — |
| 1994 | 90° | 68° | 79° | — | — |
| 1993 | 68° | 63° | 65° | 0.84" | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 82° | 54° | 68° | — | — |
| 1990 | 74° | 52° | 63° | — | — |
| 1989 | 83° | 67° | 75° | — | — |
| 1988 | 70° | 48° | 59° | — | — |
| 1987 | 84° | 60° | 72° | — | — |
| 1986 | 86° | 55° | 71° | 1.22" | — |
| 1985 | 73° | 57° | 65° | 1.78" | — |
| 1984 | 75° | 60° | 68° | 2.59" | — |
| 1983 | 79° | 68° | 73° | 1.14" | — |
| 1982warmest | 87° | 79° | 83° | — | — |
| 1981coldest | 69° | 40° | 54° | — | — |
| 1980 | 87° | 67° | 77° | — | — |
| 1979 | 83° | 57° | 70° | — | — |
| 1978 | 76° | 60° | 68° | — | — |
| 1977 | 88° | 65° | 76° | — | — |
| 1976 | 87° | 61° | 74° | — | — |
| 1975 | 78° | 50° | 64° | — | — |
| 1974 | 91° | 65° | 78° | — | — |
| 1973 | 85° | 54° | 69° | — | — |
| 1972 | 80° | 57° | 69° | — | — |
| 1971 | 79° | 53° | 66° | — | — |
56 years of data from NETTLES IS