Weather on August 17
Charleston, SC
55 Years of Data
Avg High
87°F
Avg Low
76°F
Warmest
2017
90°F avg
Coldest
1979
75°F avg
About This Date
August 17th in Charleston, SC typically brings warm summer weather, with average highs around 87°F and lows near 76°F. Over 55 years of records, the warmest August 17th was in 2017 (90°F average), while the coldest was 1979 (75°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 47% of August 17th dates historically, with the wettest August 17th recording 9.75" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for August 17th 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 | 84° | 78° | 81° | 0.05" | — |
| 2024 | 88° | 77° | 82° | — | — |
| 2023 | 88° | 76° | 82° | 0.1" | — |
| 2022 | 80° | 73° | 77° | 1.57" | — |
| 2021 | 86° | 77° | 82° | 3.56" | — |
| 2020 | 86° | 74° | 80° | — | — |
| 2019 | 83° | 76° | 79° | 2.87" | — |
| 2018 | 88° | 80° | 84° | 0.05" | — |
| 2017warmest | 97° | 83° | 90° | — | — |
| 2016 | 88° | 80° | 84° | — | — |
| 2015 | 85° | 78° | 81° | 0.2" | — |
| 2014 | 93° | 79° | 86° | — | — |
| 2013 | 82° | 72° | 77° | 0.03" | — |
| 2012 | 88° | 75° | 81° | — | — |
| 2011 | 85° | 79° | 82° | — | — |
| 2010 | 86° | 82° | 84° | 0.05" | — |
| 2009 | 84° | 78° | 81° | — | — |
| 2008 | 83° | 72° | 77° | 1.91" | — |
| 2007 | 87° | 80° | 84° | 0.03" | — |
| 2006 | 87° | 76° | 81° | — | — |
| 2005 | 94° | 75° | 84° | 3.02" | — |
| 2004 | 81° | 76° | 78° | — | — |
| 2003 | 85° | 75° | 80° | — | — |
| 2002 | 86° | 80° | 83° | 0.2" | — |
| 2001 | 91° | 80° | 86° | — | — |
| 2000 | 95° | 74° | 84° | — | — |
| 1999 | 91° | 81° | 86° | — | — |
| 1998 | 91° | 81° | 86° | 1.7" | — |
| 1997 | 91° | 76° | 83° | — | — |
| 1996 | 86° | 75° | 81° | — | — |
| 1995 | 93° | 80° | 87° | — | — |
| 1994 | 83° | 78° | 80° | 0.41" | — |
| 1993 | 88° | 77° | 82° | — | — |
| 1992 | 81° | 72° | 76° | 7.85" | — |
| 1991 | 85° | 75° | 80° | — | — |
| 1990 | 85° | 75° | 80° | 4.7" | — |
| 1989 | 86° | 73° | 80° | 1.27" | — |
| 1988 | 86° | 76° | 81° | — | — |
| 1987 | 87° | 77° | 82° | 0.15" | — |
| 1986 | 93° | 77° | 85° | — | — |
| 1985 | 92° | 76° | 84° | 1.22" | — |
| 1984 | 86° | 74° | 80° | — | — |
| 1983 | 82° | 72° | 77° | 0.56" | — |
| 1982 | 88° | 79° | 83° | — | — |
| 1981 | 87° | 75° | 81° | 0.48" | — |
| 1980 | 80° | 73° | 77° | 0.03" | — |
| 1979coldest | 80° | 70° | 75° | — | — |
| 1978 | 95° | 79° | 87° | — | — |
| 1977 | 90° | 78° | 84° | 0.71" | — |
| 1976 | 82° | 70° | 76° | 0.71" | — |
| 1975 | 96° | 79° | 87° | — | — |
| 1974 | 87° | 72° | 79° | — | — |
| 1973 | 90° | 74° | 82° | — | — |
| 1972 | 84° | 70° | 77° | — | — |
| 1971 | 86° | 73° | 80° | 9.75" | — |
55 years of data from DWTN CHARLESTON