Weather on December 18
Port Saint Lucie, FL
55 Years of Data
Avg High
75°F
Avg Low
58°F
Warmest
2015
79°F avg
Coldest
1973
49°F avg
About This Date
December 18th in Port Saint Lucie, FL typically brings pleasant winter weather, with average highs around 75°F and lows near 58°F. Over 55 years of records, the warmest December 18th was in 2015 (79°F average), while the coldest was 1973 (49°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 35% of December 18th dates historically, with the wettest December 18th recording 9.14" of rain. The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Port Saint Lucie, FL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 71° | 73° | 0.05" | — |
| 2024 | 78° | 69° | 74° | 4.55" | — |
| 2023 | 78° | 57° | 68° | — | — |
| 2022 | 75° | 67° | 71° | 0.15" | — |
| 2021 | 79° | 73° | 76° | 0.28" | — |
| 2020 | 80° | 50° | 65° | 0.05" | — |
| 2019 | 82° | 70° | 76° | 0.08" | — |
| 2018 | — | 53° | — | — | — |
| 2017 | 76° | 59° | 67° | — | — |
| 2016 | 83° | 73° | 78° | — | — |
| 2015warmest | 86° | 72° | 79° | — | — |
| 2014 | 81° | 61° | 71° | — | — |
| 2013 | 76° | 59° | 67° | — | — |
| 2012 | 81° | 68° | 74° | — | — |
| 2011 | 76° | 64° | 70° | — | — |
| 2010 | 78° | 47° | 62° | — | — |
| 2009 | 74° | 69° | 71° | 9.14" | — |
| 2008 | 76° | 67° | 71° | — | — |
| 2007 | 60° | 48° | 54° | 0.03" | — |
| 2006 | 80° | 72° | 76° | 0.03" | — |
| 2005 | 83° | 69° | 76° | — | — |
| 2004 | 67° | 54° | 60° | 2.74" | — |
| 2003 | 71° | 44° | 58° | — | — |
| 2002 | 72° | 52° | 62° | — | — |
| 2001 | 78° | 55° | 67° | — | — |
| 2000 | 75° | 52° | 63° | — | — |
| 1999 | 68° | 64° | 66° | 1.17" | — |
| 1998 | 72° | 51° | 61° | — | — |
| 1997 | 71° | 48° | 60° | — | — |
| 1996 | 80° | 58° | 69° | — | — |
| 1995 | 79° | 72° | 75° | — | — |
| 1994 | 80° | 63° | 71° | — | — |
| 1993 | 73° | 56° | 64° | 0.99" | — |
| 1992 | 78° | 67° | 72° | — | — |
| 1991 | 75° | 55° | 65° | — | — |
| 1990 | 82° | 63° | 72° | — | — |
| 1989 | 71° | 57° | 64° | — | — |
| 1988 | 61° | 38° | 49° | — | — |
| 1987 | 73° | 40° | 56° | — | — |
| 1986 | 80° | 61° | 70° | — | — |
| 1985 | 72° | 55° | 63° | 0.15" | — |
| 1984 | 79° | 65° | 72° | — | — |
| 1983 | 75° | 65° | 70° | 0.13" | — |
| 1982 | 70° | 41° | 55° | 0.05" | — |
| 1981 | 71° | 57° | 64° | — | — |
| 1980 | 71° | 45° | 58° | — | — |
| 1979 | 73° | 49° | 61° | — | — |
| 1978 | 76° | 67° | 71° | — | — |
| 1977 | 77° | 64° | 71° | 0.05" | — |
| 1976 | 74° | 46° | 60° | — | — |
| 1975 | 76° | 55° | 65° | 0.03" | — |
| 1974 | 62° | 39° | 51° | — | — |
| 1973coldest | 64° | 34° | 49° | 0.28" | — |
| 1972 | 77° | 49° | 63° | 0.2" | — |
| 1971 | 78° | 65° | 71° | — | — |
55 years of data from NETTLES IS