Weather on September 18
Dayton, OH
55 Years of Data
About This Date
September 18th in Dayton, OH typically brings pleasant fall weather, with average highs around 79°F and lows near 57°F. Over 56 years of records, the warmest September 18th was in 1972 (78°F average), while the coldest was 1981 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 23% of September 18th dates historically. The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Dayton, OH? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 76° | 66° | 71° | — | — |
| 2025 | 88° | 58° | 73° | — | — |
| 2024 | 89° | 65° | 77° | — | — |
| 2023 | 74° | 51° | 62° | — | — |
| 2022 | 85° | 65° | 75° | — | — |
| 2021 | 90° | 65° | 77° | — | — |
| 2020 | 87° | 58° | 72° | — | — |
| 2019 | 88° | 65° | 76° | — | — |
| 2018 | 84° | 66° | 75° | 0.04" | — |
| 2017 | 89° | 61° | 75° | — | — |
| 2016 | 78° | 68° | 73° | 0.06" | — |
| 2015 | 84° | 55° | 70° | — | — |
| 2014 | 67° | 45° | 56° | — | — |
| 2013 | 76° | 50° | 63° | — | — |
| 2012 | 77° | 62° | 70° | 0.33" | — |
| 2011 | 71° | 52° | 61° | — | — |
| 2010 | 85° | 53° | 69° | — | — |
| 2009 | 78° | 53° | 66° | — | — |
| 2008 | 81° | 59° | 70° | — | — |
| 2007 | 79° | 49° | 64° | — | — |
| 2006 | 86° | 60° | 73° | — | — |
| 2005 | 71° | 56° | 63° | — | — |
| 2004 | 66° | 48° | 57° | — | — |
| 2003 | 80° | 57° | 69° | — | — |
| 2002 | 79° | 54° | 66° | 0.01" | — |
| 2001 | 79° | 52° | 65° | 0.09" | — |
| 2000 | 75° | 48° | 62° | — | — |
| 1999 | 79° | 49° | 64° | — | — |
| 1998 | 82° | 66° | 74° | — | — |
| 1997 | 80° | 53° | 67° | 0.03" | — |
| 1996 | 73° | 53° | 63° | — | — |
| 1995 | 69° | 49° | 59° | — | — |
| 1994 | 81° | 56° | 68° | 0.28" | — |
| 1993 | 77° | 53° | 65° | — | — |
| 1992 | 85° | 67° | 76° | — | — |
| 1991 | 82° | 67° | 74° | — | — |
| 1990 | 68° | 47° | 57° | — | — |
| 1989 | 75° | 51° | 63° | — | — |
| 1988 | 82° | 67° | 74° | — | — |
| 1987 | 80° | 66° | 73° | 0.11" | — |
| 1986 | 78° | 47° | 62° | 0.08" | — |
| 1985 | 81° | 51° | 66° | — | — |
| 1984 | 68° | 46° | 57° | — | — |
| 1983 | 79° | 55° | 67° | — | — |
| 1982 | 81° | 52° | 66° | — | — |
| 1981coldest | 60° | 49° | 54° | 0.04" | — |
| 1980 | 67° | 49° | 58° | — | — |
| 1979 | 79° | 51° | 65° | — | — |
| 1978 | 86° | 70° | 78° | — | — |
| 1977 | 83° | 69° | 76° | — | — |
| 1976 | 68° | 59° | 64° | 0.08" | — |
| 1975 | 72° | 61° | 66° | 0.39" | — |
| 1974 | 78° | 56° | 67° | — | — |
| 1973 | 80° | 45° | 62° | 0.04" | — |
| 1972warmest | 88° | 69° | 78° | — | — |
| 1971 | 73° | 58° | 65° | — | — |
Dayton, OH Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Dayton, OH Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Dayton, OH Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Dayton, OH
Most pleasant months in Dayton, OH: May, June, September, October.
What to expect on September 18th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 18th outlook →