Weather on October 21
Port Saint Lucie, FL
55 Years of Data
About This Date
October 21st in Port Saint Lucie, FL typically brings warm fall weather, with average highs around 83°F and lows near 69°F. Over 55 years of records, the warmest October 21st was in 1993 (84°F average), while the coldest was 1989 (57°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 38% of October 21st dates historically, with the wettest October 21st recording 5.51" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for October 21st in Port Saint Lucie, FL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 74° | 78° | — | — |
| 2024 | 80° | 71° | 76° | 1.02" | — |
| 2023 | 82° | 67° | 74° | — | — |
| 2022 | 75° | 65° | 70° | — | — |
| 2021 | 84° | 76° | 80° | — | — |
| 2020 | 83° | 72° | 77° | 1.52" | — |
| 2019 | 89° | 76° | 82° | — | — |
| 2018 | 89° | 72° | 80° | — | — |
| 2017 | 84° | 77° | 81° | — | — |
| 2016 | 84° | — | — | 0.05" | — |
| 2015 | 85° | 72° | 78° | — | — |
| 2014 | 85° | 64° | 74° | — | — |
| 2013 | 88° | 77° | 82° | — | — |
| 2012 | 81° | 70° | 75° | — | — |
| 2011 | 74° | 63° | 68° | — | — |
| 2010 | 82° | 69° | 76° | — | — |
| 2009 | 79° | 73° | 76° | — | — |
| 2008 | 80° | 65° | 72° | — | — |
| 2007 | 87° | 75° | 81° | 5.51" | — |
| 2006 | 87° | 73° | 80° | — | — |
| 2005 | 87° | 73° | 80° | 3.38" | — |
| 2004 | 52° | — | — | 2.41" | — |
| 2003 | 81° | 73° | 77° | — | — |
| 2002 | 85° | 76° | 80° | — | — |
| 2001 | 82° | 73° | 78° | — | — |
| 2000 | 84° | 64° | 74° | — | — |
| 1999 | 88° | 74° | 81° | 1.07" | — |
| 1998 | 86° | 75° | 81° | 0.94" | — |
| 1997 | 79° | 63° | 71° | — | — |
| 1996 | 86° | 57° | 72° | — | — |
| 1995 | 82° | 73° | 78° | — | — |
| 1994 | 90° | 66° | 78° | — | — |
| 1993warmest | 89° | 78° | 84° | 0.48" | — |
| 1992 | 83° | 70° | 76° | 0.25" | — |
| 1991 | 87° | 74° | 80° | 2.54" | — |
| 1990 | 86° | 76° | 81° | 0.08" | — |
| 1989coldest | 70° | 44° | 57° | — | — |
| 1988 | 89° | 67° | 78° | 0.13" | — |
| 1987 | 85° | 70° | 77° | — | — |
| 1986 | 79° | 63° | 71° | 3.61" | — |
| 1985 | 84° | 72° | 78° | — | — |
| 1984 | 84° | 72° | 78° | 0.76" | — |
| 1983 | 88° | 77° | 82° | 0.05" | — |
| 1982 | 84° | 57° | 71° | 0.38" | — |
| 1981 | 83° | 73° | 78° | — | — |
| 1980 | 87° | 73° | 80° | — | — |
| 1979 | 85° | 72° | 78° | 1.02" | — |
| 1978 | 83° | 58° | 70° | 0.05" | — |
| 1977 | 81° | 62° | 71° | — | — |
| 1976 | 89° | 58° | 73° | — | — |
| 1975 | 83° | 67° | 75° | — | — |
| 1974 | 79° | 69° | 74° | — | — |
| 1973 | 84° | 69° | 77° | 1.19" | — |
| 1972 | 82° | 61° | 71° | 0.15" | — |
| 1971 | 86° | 69° | 78° | — | — |