Weather on August 18
Dayton, OH
55 Years of Data
Avg High
86°F
Avg Low
65°F
Warmest
1988
90°F avg
Coldest
1981
65°F avg
About This Date
August 18th in Dayton, OH typically brings warm summer weather, with average highs around 86°F and lows near 65°F. Over 55 years of records, the warmest August 18th was in 1988 (90°F average), while the coldest was 1981 (65°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 18th dates historically, with the wettest August 18th recording 3.45" 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 August 18th in Dayton, OH? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 65° | 74° | — | — |
| 2024 | 78° | 65° | 71° | 0.86" | — |
| 2023 | 77° | 57° | 67° | — | — |
| 2022 | 84° | 59° | 72° | — | — |
| 2021 | 86° | 73° | 80° | 0.18" | — |
| 2020 | 92° | 70° | 81° | 1.35" | — |
| 2019 | 90° | 75° | 82° | — | — |
| 2018 | 80° | 69° | 75° | 1.73" | — |
| 2017 | 89° | 71° | 80° | 0.18" | — |
| 2016 | 82° | 66° | 74° | — | — |
| 2015 | 89° | 70° | 79° | 0.08" | — |
| 2014 | 80° | 68° | 74° | — | — |
| 2013 | 82° | 59° | 71° | — | — |
| 2012 | 84° | 56° | 70° | — | — |
| 2011 | 88° | 65° | 76° | — | — |
| 2010 | 87° | 62° | 75° | — | — |
| 2009 | 90° | 74° | 82° | 0.18" | — |
| 2008 | 85° | 61° | 73° | — | — |
| 2007 | 89° | 57° | 73° | — | — |
| 2006 | 90° | 68° | 79° | — | — |
| 2005 | 98° | 65° | 81° | — | — |
| 2004 | 83° | 63° | 73° | — | — |
| 2003 | 83° | 59° | 71° | — | — |
| 2002 | 87° | 74° | 80° | 0.18" | — |
| 2001 | 84° | 65° | 74° | — | — |
| 2000 | 71° | 59° | 65° | 0.36" | — |
| 1999 | 95° | 64° | 80° | — | — |
| 1998 | 91° | 71° | 81° | — | — |
| 1997 | 82° | 67° | 74° | 1.32" | — |
| 1996 | 85° | 62° | 73° | — | — |
| 1995 | 96° | 76° | 86° | 0.86" | — |
| 1994 | 90° | 64° | 77° | — | — |
| 1993 | 90° | 68° | 79° | — | — |
| 1992 | 80° | 58° | 69° | — | — |
| 1991 | 83° | 68° | 75° | 1.47" | — |
| 1990 | 88° | 68° | 78° | 0.46" | — |
| 1989 | 78° | 64° | 71° | — | — |
| 1988warmest | 102° | 77° | 90° | — | — |
| 1987 | 90° | 65° | 77° | — | — |
| 1986 | 93° | 68° | 81° | — | — |
| 1985 | 86° | 69° | 78° | — | — |
| 1984 | 92° | 65° | 78° | 0.43" | — |
| 1983 | 83° | 74° | 78° | — | — |
| 1982 | 90° | 58° | 74° | — | — |
| 1981coldest | 77° | 53° | 65° | — | — |
| 1980 | 77° | 63° | 70° | 3.45" | — |
| 1979 | 76° | 59° | 67° | — | — |
| 1978 | 87° | 67° | 77° | — | — |
| 1977 | 79° | 56° | 67° | — | — |
| 1976 | 79° | 56° | 67° | — | — |
| 1975 | 85° | 66° | 75° | 0.28" | — |
| 1974 | 85° | 67° | 76° | — | — |
| 1973 | 85° | 65° | 75° | — | — |
| 1972 | 93° | 73° | 83° | — | — |
| 1971 | 86° | 59° | 73° | — | — |
55 years of data from DAYTON MCD