Weather on May 9
Dayton, OH
55 Years of Data
Avg High
72°F
Avg Low
51°F
Warmest
2015
79°F avg
Coldest
2020
41°F avg
About This Date
May 9th in Dayton, OH typically brings pleasant spring weather, with average highs around 72°F and lows near 51°F. Over 55 years of records, the warmest May 9th was in 2015 (79°F average), while the coldest was 2020 (41°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 47% of May 9th dates historically, with the wettest May 9th recording 3.3" of rain. The last decade has been 8.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 8.8°F cooler on this date compared to 20-30 years ago.
Planning for May 9th in Dayton, OH? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 41° | 53° | — | — |
| 2024 | 71° | 53° | 62° | 3.3" | — |
| 2023 | 72° | 52° | 62° | — | — |
| 2022 | 76° | 54° | 65° | — | — |
| 2021 | 57° | 44° | 51° | 0.15" | — |
| 2020coldest | 53° | 29° | 41° | — | — |
| 2019 | 85° | 55° | 70° | — | — |
| 2018 | 82° | 56° | 69° | — | — |
| 2017 | 63° | 38° | 50° | 0.13" | — |
| 2016 | 65° | 45° | 55° | 0.97" | — |
| 2015warmest | 91° | 67° | 79° | 0.1" | — |
| 2014 | 87° | 62° | 75° | — | — |
| 2013 | 78° | 57° | 68° | — | — |
| 2012 | 73° | 50° | 62° | — | — |
| 2011 | 71° | 52° | 61° | 0.94" | — |
| 2010 | 51° | 38° | 44° | — | — |
| 2009 | 73° | 62° | 68° | 0.03" | — |
| 2008 | 64° | 51° | 58° | 1.91" | — |
| 2007 | 86° | 59° | 73° | — | — |
| 2006 | 74° | 51° | 62° | — | — |
| 2005 | 83° | 55° | 69° | — | — |
| 2004 | 87° | 67° | 77° | — | — |
| 2003 | 73° | 60° | 67° | 0.53" | — |
| 2002 | 77° | 58° | 67° | 1.78" | — |
| 2001 | 77° | 56° | 66° | 0.05" | — |
| 2000 | 80° | 62° | 71° | 0.38" | — |
| 1999 | 68° | 57° | 63° | 0.03" | — |
| 1998 | 70° | 59° | 64° | 0.15" | — |
| 1997 | 63° | 52° | 57° | 0.84" | — |
| 1996 | 73° | 57° | 65° | 0.41" | — |
| 1995 | 70° | 53° | 61° | 0.28" | — |
| 1994 | 67° | 45° | 56° | — | — |
| 1993 | 87° | 59° | 73° | — | — |
| 1992 | 62° | 50° | 56° | 1.65" | — |
| 1991 | 78° | 53° | 66° | 0.05" | — |
| 1990 | 79° | 57° | 68° | — | — |
| 1989 | 63° | 40° | 51° | 0.97" | — |
| 1988 | 84° | 57° | 71° | 0.46" | — |
| 1987 | 76° | 52° | 64° | — | — |
| 1986 | 78° | 51° | 65° | — | — |
| 1985 | 74° | 50° | 62° | — | — |
| 1984 | 53° | 42° | 48° | 0.08" | — |
| 1983 | 55° | 37° | 46° | — | — |
| 1982 | 72° | 49° | 60° | — | — |
| 1981 | 74° | 46° | 60° | — | — |
| 1980 | 56° | 40° | 48° | — | — |
| 1979 | 88° | 67° | 77° | — | — |
| 1978 | 72° | 56° | 64° | 0.41" | — |
| 1977 | 70° | 37° | 53° | — | — |
| 1976 | 60° | 39° | 50° | — | — |
| 1975 | 73° | 52° | 62° | — | — |
| 1974 | 57° | 47° | 52° | 1.42" | — |
| 1973 | 75° | 57° | 66° | 0.3" | — |
| 1972 | 62° | 46° | 54° | 3.05" | — |
| 1971 | 72° | 49° | 60° | — | — |
55 years of data from DAYTON MCD