Weather on June 21
Dayton, OH
55 Years of Data
Avg High
86°F
Avg Low
66°F
Warmest
1994
85°F avg
Coldest
1992
55°F avg
About This Date
June 21st in Dayton, OH typically brings warm summer weather, with average highs around 86°F and lows near 66°F. Over 55 years of records, the warmest June 21st was in 1994 (85°F average), while the coldest was 1992 (55°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of June 21st dates historically, with the wettest June 21st recording 3.28" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Dayton, OH? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 71° | 80° | — | — |
| 2024 | 94° | 71° | 82° | — | — |
| 2023 | 84° | 62° | 73° | — | — |
| 2022 | 95° | 61° | 78° | — | — |
| 2021 | 89° | 81° | 85° | — | — |
| 2020 | 97° | 73° | 85° | — | — |
| 2019 | 77° | 63° | 70° | 0.18" | — |
| 2018 | 88° | 68° | 78° | 0.13" | — |
| 2017 | 85° | 65° | 75° | — | — |
| 2016 | 91° | 70° | 80° | 1.4" | — |
| 2015 | 80° | 69° | 75° | 3.28" | — |
| 2014 | 87° | 69° | 78° | 1.32" | — |
| 2013 | 88° | 63° | 75° | — | — |
| 2012 | 93° | 71° | 82° | — | — |
| 2011 | 74° | 68° | 71° | 0.76" | — |
| 2010 | 92° | 71° | 81° | — | — |
| 2009 | 89° | 70° | 79° | — | — |
| 2008 | 85° | 64° | 74° | — | — |
| 2007 | 89° | 57° | 73° | — | — |
| 2006 | 88° | 67° | 77° | 0.38" | — |
| 2005 | 83° | 61° | 72° | — | — |
| 2004 | 77° | 59° | 68° | — | — |
| 2003 | 75° | 52° | 63° | — | — |
| 2002 | 95° | 72° | 83° | — | — |
| 2001 | 83° | 68° | 75° | 0.28" | — |
| 2000 | 85° | 64° | 74° | 0.89" | — |
| 1999 | 83° | 62° | 72° | — | — |
| 1998 | 93° | 71° | 82° | — | — |
| 1997 | 93° | 75° | 84° | — | — |
| 1996 | 81° | 68° | 74° | — | — |
| 1995 | 94° | 71° | 82° | — | — |
| 1994warmest | 98° | 71° | 85° | 2.72" | — |
| 1993 | 78° | 66° | 72° | 2.13" | — |
| 1992coldest | 60° | 50° | 55° | — | — |
| 1991 | 93° | 69° | 81° | — | — |
| 1990 | 73° | 65° | 69° | 1.4" | — |
| 1989 | 82° | 64° | 73° | — | — |
| 1988 | 93° | 72° | 82° | 0.58" | — |
| 1987 | 85° | 74° | 79° | — | — |
| 1986 | 87° | 58° | 72° | — | — |
| 1985 | 79° | 57° | 68° | — | — |
| 1984 | 87° | 65° | 76° | 0.41" | — |
| 1983 | 83° | 66° | 74° | — | — |
| 1982 | 77° | 53° | 65° | 0.18" | — |
| 1981 | 86° | 63° | 74° | — | — |
| 1980 | 75° | 54° | 64° | — | — |
| 1979 | 91° | 66° | 79° | 2.34" | — |
| 1978 | 87° | 67° | 77° | 2.54" | — |
| 1977 | 87° | 58° | 72° | 0.2" | — |
| 1976 | 74° | 56° | 65° | 0.71" | — |
| 1975 | 95° | 71° | 83° | — | — |
| 1974 | 89° | 67° | 78° | 0.51" | — |
| 1973 | 86° | 67° | 76° | 0.25" | — |
| 1972 | 80° | 60° | 70° | — | — |
| 1971 | 93° | 68° | 81° | 1.88" | — |
55 years of data from DAYTON MCD