Charleston Downtown, SC
South Carolina · Records since 1893–2026
Records for August 16
🔥 Record High
August 16, 1954
+11° from 86° normal❄ Record Low
August 16, 1983
-9° from 77° normalAll-Time Records — Charleston Downtown
Top 10 Record Highs — August 16
| # | Temp | Date |
|---|---|---|
| 🏆 | 97°F | August 16, 1954 |
| 2 | 96°F | August 16, 2017 |
| 3 | 96°F | August 16, 1916 |
| 4 | 95°F | August 16, 1975 |
| 5 | 95°F | August 16, 1935 |
| 6 | 95°F | August 16, 1923 |
| 7 | 94°F | August 16, 1995 |
| 8 | 94°F | August 16, 1985 |
| 9 | 94°F | August 16, 1968 |
| 10 | 94°F | August 16, 1911 |
Top 5 Record Lows — August 16
| # | Temp | Date |
|---|---|---|
| 🥶 | 68°F | August 16, 1983 |
| 2 | 68°F | August 16, 1894 |
| 3 | 69°F | August 16, 2013 |
| 4 | 70°F | August 16, 1979 |
| 5 | 70°F | August 16, 1967 |
Heat Wave Summary — Charleston Downtown
threshold: 93°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date123 of 227 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1893–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Charleston Downtown
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 20, 1999 – Aug 2, 1999 | 14 | 103°F (Aug 1) | 96°F | 82°F |
| 2 | Jun 23, 1952 – Jun 30, 1952 | 8 | 103°F (Jun 26) | 98°F | 80°F |
| 3 | Sep 1, 1944 – Sep 7, 1944 | 7 | 100°F (Sep 4) | 96°F | 76°F |
| 4 | Jun 21, 1950 – Jun 27, 1950 | 7 | 99°F (Jun 24) | 97°F | 79°F |
| 5 | Jun 25, 1977 – Jul 1, 1977 | 7 | 99°F (Jun 28) | 96°F | 76°F |
| 6 | Jul 6, 1977 – Jul 12, 1977 | 7 | 99°F (Jul 9) | 97°F | 80°F |
| 7 | Jul 29, 1970 – Aug 4, 1970 | 7 | 98°F (Aug 1) | 95°F | 78°F |
| 8 | Aug 20, 1968 – Aug 26, 1968 | 7 | 97°F (Aug 24) | 94°F | 80°F |
| 9 | Aug 4, 1984 – Aug 10, 1984 | 7 | 96°F (Aug 7) | 94°F | 77°F |
| 10 | Jun 26, 1902 – Jul 1, 1902 | 6 | 101°F (Jul 1) | 97°F | 79°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")
Month in Review — July 2026
Average temperature · July 2026
7th-warmest month on record
6th-warmest July of 133 on record
+2.1° vs. 82.6° average (1991–2020)Longest 90°F Streak in July
5 consecutive days with highs of at least 90°F (Jul 8–12, 2026, peaking at 96°F)
The longest July streak since 2025 (1 year). The July record is 15 days, set in 1985.
Average July Temperature by Year
1893–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1998 | 86.0°F |
| 2 | 2016 | 85.0°F |
| 3 | 1977 | 84.9°F |
| 4 | 1986 | 84.8°F |
| 5 | 1993 | 84.7°F |
| 6 | 2026 | 84.7°F |
| 7 | 2025 | 84.2°F |
| 8 | 1942 | 84.1°F |
| 9 | 1999 | 84.0°F |
| 10 | 1930 | 83.9°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 1998 | 86.0°F |
| 2 | June 1998 | 85.5°F |
| 3 | July 2016 | 85.0°F |
| 4 | July 1977 | 84.9°F |
| 5 | July 1986 | 84.8°F |
| 6 | July 1993 | 84.7°F |
| 7 | July 2026 | 84.7°F |
| 8 | August 2021 | 84.6°F |
| 9 | August 1999 | 84.3°F |
| 10 | August 1900 | 84.2°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Charleston Downtown, SC | 84.7°F | 6th of 133 |
| Charleston, SC | 85.3°F | 4th of 90 |
| Savannah, GA | 85.7°F | 3rd of 153 |
| Myrtle Beach, SC | 82.7°F | 5th of 66 |
| Columbia, SC | 84.7°F | 8th of 140 |