Weather on May 18
Port Saint Lucie, FL
55 Years of Data
Avg High
85°F
Avg Low
71°F
Warmest
2015
86°F avg
Coldest
1973
69°F avg
About This Date
May 18th in Port Saint Lucie, FL typically brings warm spring weather, with average highs around 85°F and lows near 71°F. Over 55 years of records, the warmest May 18th was in 2015 (86°F average), while the coldest was 1973 (69°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 31% of May 18th dates historically, with the wettest May 18th recording 6.48" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Port Saint Lucie, FL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 76° | 83° | — | — |
| 2024 | 89° | 77° | 83° | — | — |
| 2023 | 96° | 73° | 85° | — | — |
| 2022 | 84° | 72° | 78° | — | — |
| 2021 | 81° | 74° | 77° | — | — |
| 2020 | 83° | 71° | 77° | — | — |
| 2019 | 82° | 73° | 78° | — | — |
| 2018 | 83° | 71° | 77° | 1.73" | — |
| 2017 | 83° | 74° | 78° | 0.97" | — |
| 2016 | 89° | 70° | 79° | 5.33" | — |
| 2015warmest | 88° | 85° | 86° | 0.13" | — |
| 2014 | 80° | 74° | 77° | — | — |
| 2013 | 81° | 75° | 78° | — | — |
| 2012 | 82° | 71° | 77° | 0.38" | — |
| 2011 | 83° | 61° | 72° | — | — |
| 2010 | 90° | 70° | 80° | 6.48" | — |
| 2009 | 86° | 70° | 78° | — | — |
| 2008 | 91° | 73° | 82° | — | — |
| 2007 | 84° | 70° | 77° | — | — |
| 2006 | 79° | 64° | 71° | — | — |
| 2005 | 82° | 68° | 75° | — | — |
| 2004 | 80° | 74° | 77° | — | — |
| 2003 | 89° | 73° | 81° | — | — |
| 2002 | 85° | 70° | 77° | — | — |
| 2001 | 90° | 66° | 78° | 0.56" | — |
| 2000 | 83° | 74° | 78° | — | — |
| 1999 | 82° | 68° | 75° | 1.09" | — |
| 1998 | 84° | 66° | 75° | — | — |
| 1997 | 85° | 68° | 76° | 0.18" | — |
| 1996 | 86° | 73° | 80° | — | — |
| 1995 | 93° | 75° | 84° | — | — |
| 1994 | 88° | 71° | 79° | 0.38" | — |
| 1993 | 86° | 72° | 79° | — | — |
| 1992 | 83° | 73° | 78° | 0.25" | — |
| 1991 | 84° | 71° | 78° | — | — |
| 1990 | 91° | 74° | 82° | — | — |
| 1989 | 86° | 71° | 79° | — | — |
| 1988 | 88° | 67° | 77° | 0.05" | — |
| 1987 | 81° | 71° | 76° | 0.71" | — |
| 1986 | 79° | 73° | 76° | — | — |
| 1985 | 93° | 67° | 80° | — | — |
| 1984 | 81° | 73° | 77° | — | — |
| 1983 | 87° | 78° | 83° | — | — |
| 1982 | 85° | 70° | 77° | — | — |
| 1981 | 87° | 70° | 78° | — | — |
| 1980 | 84° | 75° | 80° | — | — |
| 1979 | 81° | 71° | 76° | 0.23" | — |
| 1978 | 86° | 68° | 77° | 4.52" | — |
| 1977 | 83° | 72° | 77° | — | — |
| 1976 | 90° | 69° | 79° | — | — |
| 1975 | 91° | 74° | 82° | 0.3" | — |
| 1974 | 83° | 66° | 74° | — | — |
| 1973coldest | 82° | 56° | 69° | — | — |
| 1972 | 84° | 61° | 72° | 2.79" | — |
| 1971 | 82° | 65° | 73° | — | — |
55 years of data from NETTLES IS