Weather on July 18
Charleston, SC
55 Years of Data
About This Date
July 18th in Charleston, SC typically brings warm summer weather, with average highs around 87°F and lows near 77°F. Over 55 years of records, the warmest July 18th was in 1986 (89°F average), while the coldest was 1987 (76°F) — a 13°F range across recorded history. Rain or other precipitation has occurred on about 31% of July 18th dates historically, with the wettest July 18th recording 5.66" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for July 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 | 89° | 78° | 84° | 0.18" | — |
| 2024 | 87° | 80° | 84° | — | — |
| 2023 | 91° | 80° | 86° | — | — |
| 2022 | 86° | 78° | 82° | — | — |
| 2021 | 88° | 79° | 83° | — | — |
| 2020 | 90° | 80° | 85° | — | — |
| 2019 | 91° | 72° | 81° | 4.5" | — |
| 2018 | 89° | 77° | 83° | 0.74" | — |
| 2017 | 83° | 78° | 80° | — | — |
| 2016 | 88° | 78° | 83° | 0.1" | — |
| 2015 | 87° | 80° | 84° | — | — |
| 2014 | 86° | 76° | 81° | — | — |
| 2013 | 86° | 76° | 81° | — | — |
| 2012 | 87° | 78° | 83° | — | — |
| 2011 | 84° | 75° | 80° | — | — |
| 2010 | 88° | 80° | 84° | — | — |
| 2009 | 88° | 75° | 81° | 0.3" | — |
| 2008 | 81° | 77° | 79° | 0.58" | — |
| 2007 | 93° | 81° | 87° | — | — |
| 2006 | 90° | 77° | 83° | — | — |
| 2005 | 88° | 80° | 84° | — | — |
| 2004 | 81° | 73° | 77° | 3.35" | — |
| 2003 | 85° | 73° | 79° | 4.27" | — |
| 2002 | 89° | 81° | 85° | — | — |
| 2001 | 88° | 75° | 81° | — | — |
| 2000 | 91° | 79° | 85° | — | — |
| 1999 | 89° | 78° | 84° | — | — |
| 1998 | 89° | 77° | 83° | 4.8" | — |
| 1997 | 86° | 75° | 81° | — | — |
| 1996 | 88° | 78° | 83° | — | — |
| 1995 | 86° | 79° | 82° | — | — |
| 1994 | 91° | 81° | 86° | — | — |
| 1993 | 85° | 81° | 83° | — | — |
| 1992 | 87° | 78° | 83° | — | — |
| 1991 | 85° | 76° | 80° | 0.08" | — |
| 1990 | 82° | 74° | 78° | 0.58" | — |
| 1989 | 83° | 73° | 78° | 3.28" | — |
| 1988 | 85° | 80° | 82° | — | — |
| 1987coldest | 81° | 72° | 76° | — | — |
| 1986warmest | 97° | 81° | 89° | — | — |
| 1985 | 91° | 75° | 83° | — | — |
| 1984 | 85° | 70° | 77° | 5.66" | — |
| 1983 | 95° | 78° | 87° | — | — |
| 1982 | 86° | 74° | 80° | 0.69" | — |
| 1981 | 86° | 79° | 82° | — | — |
| 1980 | 90° | 76° | 83° | — | — |
| 1979 | 84° | 72° | 78° | 1.4" | — |
| 1978 | 87° | 76° | 81° | — | — |
| 1977 | 92° | 78° | 85° | — | — |
| 1976 | 86° | 70° | 78° | 2.01" | — |
| 1975 | 81° | 74° | 77° | 0.66" | — |
| 1974 | 88° | 78° | 83° | — | — |
| 1973 | 84° | 70° | 77° | — | — |
| 1972 | 86° | 78° | 82° | — | — |
| 1971 | 91° | 78° | 85° | — | — |
Charleston, SC Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Charleston, SC Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Charleston, SC Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Charleston, SC
Charleston, SC has no months that meet our "pleasant" threshold — every season has tradeoffs.