Weather on December 21
Port Saint Lucie, FL
55 Years of Data
About This Date
December 21st in Port Saint Lucie, FL typically brings pleasant winter weather, with average highs around 74°F and lows near 58°F. Over 55 years of records, the warmest December 21st was in 1990 (75°F average), while the coldest was 1996 (43°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 24% of December 21st dates historically, with the wettest December 21st recording 9.4" of rain. The last decade has been 10.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 10.3°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Port Saint Lucie, FL? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 64° | 71° | — | — |
| 2024 | 75° | 54° | 64° | — | — |
| 2023 | 70° | 58° | 64° | — | — |
| 2022 | 74° | 67° | 70° | 0.89" | — |
| 2021 | 78° | 70° | 74° | 1.27" | — |
| 2020 | 79° | 49° | 64° | 0.23" | — |
| 2019 | 73° | 66° | 70° | 0.38" | — |
| 2018 | 83° | 62° | 72° | 0.91" | — |
| 2017 | 81° | 65° | 73° | — | — |
| 2016 | 79° | 64° | 71° | — | — |
| 2015 | 78° | 71° | 75° | — | — |
| 2014 | 78° | 68° | 73° | — | — |
| 2013 | 77° | 73° | 75° | — | — |
| 2012 | 77° | 59° | 68° | — | — |
| 2011 | 74° | 68° | 71° | — | — |
| 2010 | 62° | 43° | 52° | — | — |
| 2009 | 60° | 45° | 52° | — | — |
| 2008 | 78° | 58° | 68° | — | — |
| 2007 | 76° | 65° | 70° | — | — |
| 2006 | 78° | 72° | 75° | — | — |
| 2005 | 68° | 58° | 63° | 0.08" | — |
| 2004 | 70° | 48° | 59° | — | — |
| 2003 | 58° | 37° | 47° | — | — |
| 2002 | 48° | 47° | 47° | — | — |
| 2001 | 71° | 50° | 61° | — | — |
| 2000 | 69° | 48° | 59° | — | — |
| 1999 | 77° | 65° | 71° | — | — |
| 1998 | 82° | 60° | 71° | — | — |
| 1997 | 78° | 59° | 69° | — | — |
| 1996coldest | 49° | 38° | 43° | 0.05" | — |
| 1995 | 67° | 44° | 55° | — | — |
| 1994 | 77° | 62° | 70° | 9.4" | — |
| 1993 | 78° | 66° | 72° | — | — |
| 1992 | 84° | 67° | 75° | — | — |
| 1991 | 77° | 66° | 72° | — | — |
| 1990warmest | 78° | 72° | 75° | — | — |
| 1989 | 70° | 54° | 62° | — | — |
| 1988 | 79° | 66° | 72° | 0.08" | — |
| 1987 | 78° | 62° | 70° | — | — |
| 1986 | 81° | 60° | 70° | — | — |
| 1985 | 68° | 47° | 57° | — | — |
| 1984 | 75° | 58° | 66° | 0.2" | — |
| 1983 | 80° | 65° | 72° | 0.05" | — |
| 1982 | 72° | 41° | 56° | — | — |
| 1981 | 66° | 39° | 53° | — | — |
| 1980 | 75° | 55° | 65° | — | — |
| 1979 | 75° | 56° | 65° | — | — |
| 1978 | 82° | 62° | 72° | — | — |
| 1977 | 78° | 55° | 67° | — | — |
| 1976 | 76° | 54° | 65° | — | — |
| 1975 | 64° | 46° | 55° | 0.53" | — |
| 1974 | 75° | 62° | 69° | 0.08" | — |
| 1973 | 67° | 50° | 58° | — | — |
| 1972 | 80° | 61° | 70° | — | — |
| 1971 | 86° | 61° | 73° | — | — |
Port Saint Lucie, FL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Port Saint Lucie, FL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Port Saint Lucie, FL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Port Saint Lucie, FL
Port Saint Lucie, FL has no months that meet our "pleasant" threshold — every season has tradeoffs.