Weather on June 18
Charleston, SC
55 Years of Data
Avg High
85°F
Avg Low
74°F
Warmest
1985
87°F avg
Coldest
1982
71°F avg
About This Date
June 18th in Charleston, SC typically brings warm summer weather, with average highs around 85°F and lows near 74°F. Over 55 years of records, the warmest June 18th was in 1985 (87°F average), while the coldest was 1982 (71°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 31% of June 18th dates historically, with the wettest June 18th recording 10.85" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Charleston, SC? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 78° | 83° | — | — |
| 2024 | 82° | 77° | 80° | — | — |
| 2023 | 82° | 76° | 79° | — | — |
| 2022 | 93° | 75° | 84° | — | — |
| 2021 | 87° | 77° | 82° | — | — |
| 2020 | 79° | 66° | 72° | — | — |
| 2019 | 82° | 78° | 80° | — | — |
| 2018 | 86° | 78° | 82° | — | — |
| 2017 | 86° | 79° | 82° | — | — |
| 2016 | 82° | 73° | 78° | — | — |
| 2015 | 89° | 80° | 85° | — | — |
| 2014 | 86° | 76° | 81° | — | — |
| 2013 | 88° | 72° | 80° | 3.02" | — |
| 2012 | 79° | 70° | 74° | — | — |
| 2011 | 88° | 75° | 81° | 0.03" | — |
| 2010 | 87° | 79° | 83° | — | — |
| 2009 | 85° | 72° | 78° | 0.81" | — |
| 2008 | 84° | 71° | 78° | — | — |
| 2007 | 85° | 75° | 80° | — | — |
| 2006 | 79° | 72° | 75° | — | — |
| 2005 | 81° | 76° | 78° | — | — |
| 2004 | 88° | 79° | 83° | — | — |
| 2003 | 83° | 78° | 80° | 0.2" | — |
| 2002 | 81° | 70° | 75° | 2.13" | — |
| 2001 | 87° | 70° | 78° | — | — |
| 2000 | 85° | 75° | 80° | — | — |
| 1999 | 79° | 70° | 74° | — | — |
| 1998 | 92° | 81° | 86° | — | — |
| 1997 | 87° | 73° | 80° | 0.58" | — |
| 1996 | 82° | 74° | 78° | — | — |
| 1995 | 82° | 71° | 77° | 0.79" | — |
| 1994 | 82° | 74° | 78° | — | — |
| 1993 | 81° | 74° | 77° | — | — |
| 1992 | 78° | 70° | 74° | — | — |
| 1991 | 86° | 76° | 81° | — | — |
| 1990 | 87° | 73° | 80° | — | — |
| 1989 | 88° | 76° | 82° | 0.66" | — |
| 1988 | 83° | 73° | 78° | — | — |
| 1987 | 85° | 75° | 80° | 0.13" | — |
| 1986 | 81° | 75° | 78° | — | — |
| 1985warmest | 95° | 78° | 87° | — | — |
| 1984 | 95° | 73° | 84° | — | — |
| 1983 | 83° | 70° | 76° | — | — |
| 1982coldest | 73° | 70° | 71° | 10.85" | — |
| 1981 | 91° | 80° | 86° | — | — |
| 1980 | 80° | 70° | 75° | 0.66" | — |
| 1979 | 93° | 70° | 81° | — | — |
| 1978 | 82° | 72° | 77° | — | — |
| 1977 | 92° | 76° | 84° | 1.04" | — |
| 1976 | 82° | 74° | 78° | 0.15" | — |
| 1975 | 92° | 72° | 82° | 0.2" | — |
| 1974 | 87° | 68° | 78° | — | — |
| 1973 | 90° | 76° | 83° | 0.43" | — |
| 1972 | 81° | 76° | 78° | 0.3" | — |
| 1971 | 85° | 69° | 77° | 2.41" | — |
55 years of data from DWTN CHARLESTON