Weather on August 18
Port Saint Lucie, FL
55 Years of Data
Avg High
90°F
Avg Low
76°F
Warmest
1995
87°F avg
Coldest
1976
73°F avg
About This Date
August 18th in Port Saint Lucie, FL typically brings hot summer weather, with average highs around 90°F and lows near 76°F. Over 55 years of records, the warmest August 18th was in 1995 (87°F average), while the coldest was 1976 (73°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 36% of August 18th dates historically, with the wettest August 18th recording 6.15" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Port Saint Lucie, FL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 82° | 87° | — | — |
| 2024 | 89° | 79° | 84° | — | — |
| 2023 | 96° | 75° | 86° | 0.2" | — |
| 2022 | 96° | 78° | 87° | — | — |
| 2021 | 89° | 80° | 85° | — | — |
| 2020 | 90° | 74° | 82° | 1.47" | — |
| 2019 | 94° | 76° | 85° | — | — |
| 2018 | 90° | 76° | 83° | — | — |
| 2017 | 90° | 79° | 84° | — | — |
| 2016 | 89° | 77° | 83° | 0.76" | — |
| 2015 | 91° | 78° | 85° | — | — |
| 2014 | 89° | 81° | 85° | — | — |
| 2013 | 85° | 80° | 82° | — | — |
| 2012 | 87° | 77° | 82° | — | — |
| 2011 | 89° | 75° | 82° | 0.3" | — |
| 2010 | 93° | 77° | 85° | — | — |
| 2009 | 92° | 78° | 85° | 0.13" | — |
| 2008 | 88° | 76° | 82° | 0.03" | — |
| 2007 | 92° | 76° | 84° | — | — |
| 2006 | 90° | 77° | 83° | 0.03" | — |
| 2005 | 91° | 78° | 85° | — | — |
| 2004 | 89° | 79° | 84° | — | — |
| 2003 | 90° | 74° | 82° | — | — |
| 2002 | 89° | 76° | 82° | — | — |
| 2001 | 91° | 76° | 83° | — | — |
| 2000 | 91° | 71° | 81° | — | — |
| 1999 | 85° | 74° | 79° | 0.69" | — |
| 1998 | 92° | 79° | 85° | — | — |
| 1997 | 91° | 72° | 81° | — | — |
| 1996 | 91° | 78° | 85° | — | — |
| 1995warmest | 96° | 78° | 87° | — | — |
| 1994 | 89° | 76° | 82° | — | — |
| 1993 | 93° | 74° | 83° | — | — |
| 1992 | 90° | 76° | 83° | 0.25" | — |
| 1991 | 95° | 73° | 84° | — | — |
| 1990 | 90° | 77° | 83° | — | — |
| 1989 | 89° | 76° | 82° | 0.38" | — |
| 1988 | 88° | 74° | 81° | — | — |
| 1987 | 90° | 76° | 83° | — | — |
| 1986 | 87° | 76° | 81° | 1.55" | — |
| 1985 | 94° | 78° | 86° | 0.15" | — |
| 1984 | 86° | 74° | 80° | — | — |
| 1983 | 91° | 71° | 81° | 1.98" | — |
| 1982 | 90° | 72° | 81° | 0.13" | — |
| 1981 | 80° | 73° | 77° | 6.15" | — |
| 1980 | 92° | 77° | 84° | — | — |
| 1979 | 88° | 73° | 80° | 0.64" | — |
| 1978 | 93° | 76° | 84° | — | — |
| 1977 | 90° | 70° | 80° | — | — |
| 1976coldest | 85° | 61° | 73° | 2.06" | — |
| 1975 | 96° | 70° | 83° | — | — |
| 1974 | 93° | 74° | 83° | 0.05" | — |
| 1973 | 89° | 81° | 85° | 0.15" | — |
| 1972 | 90° | 69° | 79° | — | — |
| 1971 | 90° | — | — | 0.38" | — |
55 years of data from NETTLES IS