Weather on August 21
Rochester, NY
55 Years of Data
Avg High
78°F
Avg Low
58°F
Warmest
1995
78°F avg
Coldest
1982
55°F avg
About This Date
August 21st in Rochester, NY typically brings pleasant summer weather, with average highs around 78°F and lows near 58°F. Over 55 years of records, the warmest August 21st was in 1995 (78°F average), while the coldest was 1982 (55°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 21st dates historically, with the wettest August 21st recording 3.1" of rain. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Rochester, NY? 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 | 71° | 56° | 63° | — | — |
| 2024 | 68° | 51° | 60° | 0.1" | — |
| 2023 | 74° | 61° | 67° | — | — |
| 2022 | 85° | 65° | 75° | 0.2" | — |
| 2021 | 82° | 69° | 76° | 0.91" | — |
| 2020 | 84° | 58° | 71° | — | — |
| 2019 | 87° | 67° | 77° | 0.51" | — |
| 2018 | 77° | 67° | 72° | 0.18" | — |
| 2017 | 86° | 62° | 74° | — | — |
| 2016 | 79° | 65° | 72° | 0.71" | — |
| 2015 | 74° | 61° | 67° | — | — |
| 2014 | 81° | 65° | 73° | — | — |
| 2013 | 87° | 62° | 75° | — | — |
| 2012 | 77° | 52° | 64° | — | — |
| 2011 | 75° | 58° | 66° | 3.1" | — |
| 2010 | 80° | 58° | 69° | — | — |
| 2009 | 82° | 66° | 74° | 0.2" | — |
| 2008 | 82° | 51° | 67° | — | — |
| 2007 | 66° | 60° | 63° | 0.25" | — |
| 2006 | 79° | 57° | 68° | — | — |
| 2005 | 83° | 63° | 73° | — | — |
| 2004 | 67° | 50° | 58° | 0.28" | — |
| 2003 | 88° | 65° | 76° | — | — |
| 2002 | 83° | 54° | 68° | — | — |
| 2001 | 79° | 60° | 69° | 0.03" | — |
| 2000 | 71° | 45° | 58° | — | — |
| 1999 | 72° | 57° | 64° | — | — |
| 1998 | 78° | 62° | 70° | — | — |
| 1997 | 75° | 56° | 65° | 0.56" | — |
| 1996 | 82° | 61° | 71° | — | — |
| 1995warmest | 88° | 69° | 78° | — | — |
| 1994 | 77° | 67° | 72° | 1.57" | — |
| 1993 | 69° | 51° | 60° | — | — |
| 1992 | 76° | 49° | 62° | — | — |
| 1991 | 70° | 61° | 65° | — | — |
| 1990 | 71° | 59° | 65° | — | — |
| 1989 | 79° | 64° | 71° | 0.13" | — |
| 1988 | 70° | 50° | 60° | — | — |
| 1987 | 82° | 53° | 68° | — | — |
| 1986 | 80° | 63° | 71° | 0.1" | — |
| 1985 | 72° | 57° | 64° | — | — |
| 1984 | 80° | 49° | 64° | — | — |
| 1983 | 76° | 54° | 65° | — | — |
| 1982coldest | 64° | 46° | 55° | 0.23" | — |
| 1981 | 82° | 54° | 68° | — | — |
| 1980 | 84° | 64° | 74° | — | — |
| 1979 | 81° | 50° | 65° | — | — |
| 1978 | 78° | 52° | 65° | — | — |
| 1977 | 73° | 47° | 60° | 1.83" | — |
| 1976 | 87° | 64° | 76° | — | — |
| 1975 | 76° | 53° | 64° | — | — |
| 1974 | 91° | 61° | 76° | — | — |
| 1973 | 69° | 57° | 63° | 0.05" | — |
| 1972 | 86° | 56° | 71° | — | — |
| 1971 | 84° | 58° | 71° | 1.93" | — |
55 years of data from ROCHESTER GTR INTL