Weather on August 15
Dayton, OH
55 Years of Data
Avg High
85°F
Avg Low
65°F
Warmest
1988
87°F avg
Coldest
2013
59°F avg
About This Date
August 15th in Dayton, OH typically brings warm summer weather, with average highs around 85°F and lows near 65°F. Over 55 years of records, the warmest August 15th was in 1988 (87°F average), while the coldest was 2013 (59°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 15th dates historically, with the wettest August 15th recording 3.48" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Dayton, OH? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 68° | 79° | — | — |
| 2024 | 81° | 63° | 72° | 0.15" | — |
| 2023 | 71° | 63° | 67° | 0.08" | — |
| 2022 | 82° | 62° | 72° | — | — |
| 2021 | 89° | 70° | 79° | — | — |
| 2020 | 92° | 74° | 83° | 0.97" | — |
| 2019 | 87° | 66° | 77° | — | — |
| 2018 | 87° | 66° | 77° | — | — |
| 2017 | 86° | 69° | 78° | — | — |
| 2016 | 76° | 69° | 72° | 3.48" | — |
| 2015 | 88° | 65° | 76° | — | — |
| 2014 | 80° | 50° | 65° | — | — |
| 2013coldest | 69° | 49° | 59° | — | — |
| 2012 | 78° | 60° | 69° | — | — |
| 2011 | 77° | 65° | 71° | 0.05" | — |
| 2010 | 93° | 73° | 83° | 0.51" | — |
| 2009 | 88° | 65° | 76° | — | — |
| 2008 | 78° | 61° | 69° | 0.03" | — |
| 2007 | 83° | 63° | 73° | — | — |
| 2006 | 83° | 64° | 73° | 1.68" | — |
| 2005 | 82° | 68° | 75° | 0.1" | — |
| 2004 | 78° | 54° | 66° | — | — |
| 2003 | 91° | 73° | 82° | — | — |
| 2002 | 84° | 73° | 79° | 0.76" | — |
| 2001 | 82° | 60° | 71° | — | — |
| 2000 | 89° | — | — | — | — |
| 1999 | 70° | 57° | 63° | — | — |
| 1998 | 85° | 68° | 76° | — | — |
| 1997 | 83° | 62° | 72° | 0.2" | — |
| 1996 | 89° | 69° | 79° | — | — |
| 1995 | 95° | 77° | 86° | — | — |
| 1994 | 83° | 56° | 69° | — | — |
| 1993 | 95° | 67° | 81° | — | — |
| 1992 | 76° | 60° | 68° | 0.15" | — |
| 1991 | 82° | 62° | 72° | 0.36" | — |
| 1990 | 82° | 60° | 71° | — | — |
| 1989 | 88° | 63° | 75° | — | — |
| 1988warmest | 96° | 77° | 87° | — | — |
| 1987 | 94° | 69° | 81° | — | — |
| 1986 | 93° | 66° | 80° | — | — |
| 1985 | 92° | 74° | 83° | — | — |
| 1984 | 89° | 65° | 77° | — | — |
| 1983 | 82° | 59° | 71° | — | — |
| 1982 | 83° | 56° | 69° | — | — |
| 1981 | 85° | 69° | 77° | 0.05" | — |
| 1980 | 88° | 68° | 78° | 1.8" | — |
| 1979 | 76° | 49° | 62° | — | — |
| 1978 | 86° | 70° | 78° | 0.66" | — |
| 1977 | 86° | 70° | 78° | — | — |
| 1976 | 81° | 66° | 73° | 1.32" | — |
| 1975 | 85° | 71° | 78° | 1.68" | — |
| 1974 | 86° | 65° | 75° | — | — |
| 1973 | 78° | 66° | 72° | 0.25" | — |
| 1972 | 91° | 67° | 79° | — | — |
| 1971 | 89° | 62° | 76° | — | — |
55 years of data from DAYTON MCD