Weather on August 21
Manchester, NH
55 Years of Data
Avg High
80°F
Avg Low
57°F
Warmest
2009
81°F avg
Coldest
1982
55°F avg
About This Date
August 21st in Manchester, NH typically brings warm summer weather, with average highs around 80°F and lows near 57°F. Over 55 years of records, the warmest August 21st was in 2009 (81°F average), while the coldest was 1982 (55°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 21st dates historically, with the wettest August 21st recording 2.31" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Manchester, NH? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 51° | 62° | — | — |
| 2024 | 74° | 52° | 63° | 0.33" | — |
| 2023 | 86° | 62° | 74° | — | — |
| 2022 | 92° | 65° | 78° | — | — |
| 2021 | 87° | 70° | 78° | — | — |
| 2020 | 91° | 58° | 74° | — | — |
| 2019 | 79° | 64° | 71° | 0.1" | — |
| 2018 | 72° | 58° | 65° | — | — |
| 2017 | 85° | 60° | 72° | — | — |
| 2016 | 87° | 67° | 77° | 0.28" | — |
| 2015 | 84° | 72° | 78° | 1.42" | — |
| 2014 | 69° | 57° | 63° | 1.55" | — |
| 2013 | 89° | 63° | 76° | — | — |
| 2012 | 83° | 63° | 73° | — | — |
| 2011 | 86° | 65° | 75° | 0.33" | — |
| 2010 | 79° | 54° | 66° | — | — |
| 2009warmest | 92° | 71° | 81° | 0.48" | — |
| 2008 | 80° | 51° | 66° | — | — |
| 2007 | 71° | 49° | 60° | — | — |
| 2006 | 76° | 62° | 69° | 0.03" | — |
| 2005 | 90° | 69° | 79° | — | — |
| 2004 | 76° | 60° | 68° | 2.31" | — |
| 2003 | 89° | 65° | 77° | — | — |
| 2002 | 84° | 60° | 72° | — | — |
| 2001 | 81° | 63° | 72° | 0.18" | — |
| 2000 | 75° | 49° | 62° | — | — |
| 1999 | 62° | 56° | 59° | 1.32" | — |
| 1998 | 78° | 61° | 69° | — | — |
| 1997 | 79° | 50° | 64° | 0.18" | — |
| 1996 | 85° | 58° | 71° | — | — |
| 1995 | 78° | 48° | 63° | — | — |
| 1994 | 81° | 63° | 72° | — | — |
| 1993 | 79° | 56° | 67° | — | — |
| 1992 | 72° | 47° | 59° | — | — |
| 1991 | 79° | 52° | 65° | 2.18" | — |
| 1990 | 70° | 42° | 56° | — | — |
| 1989 | 82° | 60° | 71° | 0.1" | — |
| 1988 | 78° | 52° | 65° | — | — |
| 1987 | 82° | 49° | 65° | — | — |
| 1986 | 76° | 56° | 66° | — | — |
| 1985 | 80° | 52° | 66° | 0.03" | — |
| 1984 | 75° | 46° | 61° | — | — |
| 1983 | 94° | 59° | 76° | — | — |
| 1982coldest | 66° | 45° | 55° | — | — |
| 1981 | 78° | 48° | 63° | — | — |
| 1980 | 63° | 57° | 60° | 0.15" | — |
| 1979 | 75° | 54° | 64° | — | — |
| 1978 | 83° | 62° | 72° | — | — |
| 1977 | 74° | 44° | 59° | — | — |
| 1976 | 85° | 58° | 71° | — | — |
| 1975 | 77° | 44° | 61° | — | — |
| 1974 | 87° | 55° | 71° | — | — |
| 1973 | 78° | 53° | 66° | — | — |
| 1972 | 81° | 50° | 65° | — | — |
| 1971 | 87° | 58° | 72° | — | — |
55 years of data from MANCHESTER