Weather on August 21
Cincinnati, OH
55 Years of Data
Avg High
85°F
Avg Low
63°F
Warmest
1983
87°F avg
Coldest
2024
63°F avg
About This Date
August 21st in Cincinnati, OH typically brings warm summer weather, with average highs around 85°F and lows near 63°F. Over 55 years of records, the warmest August 21st was in 1983 (87°F average), while the coldest was 2024 (63°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 21st dates historically, with the wettest August 21st recording 3.05" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Cincinnati, OH? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 69° | 72° | — | — |
| 2024coldest | 77° | 49° | 63° | — | — |
| 2023 | 95° | 70° | 82° | — | — |
| 2022 | 81° | 64° | 72° | 1.24" | — |
| 2021 | 89° | 65° | 77° | — | — |
| 2020 | 84° | 60° | 72° | — | — |
| 2019 | 89° | 68° | 79° | — | — |
| 2018 | 83° | 72° | 77° | — | — |
| 2017 | 90° | 69° | 79° | — | — |
| 2016 | 79° | 65° | 72° | 1.4" | — |
| 2015 | 77° | 57° | 67° | — | — |
| 2014 | 85° | 64° | 74° | 0.28" | — |
| 2013 | 86° | 64° | 75° | — | — |
| 2012 | 82° | 55° | 69° | — | — |
| 2011 | 86° | 67° | 76° | — | — |
| 2010 | 91° | 70° | 80° | — | — |
| 2009 | 85° | 67° | 76° | — | — |
| 2008 | 89° | 64° | 77° | — | — |
| 2007 | 93° | 73° | 83° | — | — |
| 2006 | 82° | 61° | 71° | — | — |
| 2005 | 94° | 71° | 82° | 0.43" | — |
| 2004 | 76° | 59° | 67° | 1.27" | — |
| 2003 | 88° | 66° | 77° | — | — |
| 2002 | 81° | 64° | 72° | — | — |
| 2001 | 77° | 56° | 66° | — | — |
| 2000 | 85° | 51° | 68° | — | — |
| 1999 | 84° | 54° | 69° | — | — |
| 1998 | 90° | 58° | 74° | — | — |
| 1997 | 73° | 60° | 67° | — | — |
| 1996 | 92° | 69° | 80° | — | — |
| 1995 | 90° | 71° | 80° | — | — |
| 1994 | 82° | 60° | 71° | 1.4" | — |
| 1993 | 86° | 58° | 72° | — | — |
| 1992 | 83° | 54° | 68° | — | — |
| 1991 | 83° | 55° | 69° | — | — |
| 1990 | 88° | 62° | 75° | 3.05" | — |
| 1989 | 80° | 67° | 73° | 0.28" | — |
| 1988 | 85° | 62° | 73° | — | — |
| 1987 | 87° | 62° | 75° | — | — |
| 1986 | 88° | 69° | 78° | — | — |
| 1985 | 76° | 58° | 67° | — | — |
| 1984 | 85° | 56° | 70° | — | — |
| 1983warmest | 100° | 74° | 87° | — | — |
| 1982 | 78° | 58° | 68° | — | — |
| 1981 | 79° | 56° | 67° | — | — |
| 1980 | 92° | 71° | 81° | — | — |
| 1979 | 81° | 68° | 74° | — | — |
| 1978 | 79° | 55° | 67° | — | — |
| 1977 | 77° | 62° | 70° | 1.14" | — |
| 1976 | 86° | 60° | 73° | — | — |
| 1975 | 92° | 68° | 80° | — | — |
| 1974 | 87° | 64° | 76° | — | — |
| 1973 | 74° | 61° | 67° | — | — |
| 1972 | 90° | 63° | 76° | — | — |
| 1971 | 89° | 70° | 79° | 0.84" | — |
55 years of data from CINCINNATI ABBE WSMO