Weather on August 20
Manchester, NH
55 Years of Data
Avg High
79°F
Avg Low
58°F
Warmest
1983
79°F avg
Coldest
1995
56°F avg
About This Date
August 20th in Manchester, NH typically brings pleasant summer weather, with average highs around 79°F and lows near 58°F. Over 55 years of records, the warmest August 20th was in 1983 (79°F average), while the coldest was 1995 (56°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 20th dates historically, with the wettest August 20th recording 9.7" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Manchester, NH? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 62° | 55° | 59° | 0.28" | — |
| 2024 | 70° | 57° | 63° | — | — |
| 2023 | 84° | 56° | 70° | — | — |
| 2022 | 94° | 60° | 77° | — | — |
| 2021 | 85° | 71° | 78° | 0.43" | — |
| 2020 | 81° | 54° | 67° | — | — |
| 2019 | 88° | 66° | 77° | — | — |
| 2018 | 78° | 61° | 69° | — | — |
| 2017 | 82° | 65° | 73° | — | — |
| 2016 | 86° | 63° | 74° | — | — |
| 2015 | 87° | 71° | 79° | — | — |
| 2014 | 82° | 57° | 70° | — | — |
| 2013 | 86° | 62° | 74° | — | — |
| 2012 | 80° | 58° | 69° | — | — |
| 2011 | 86° | 65° | 75° | — | — |
| 2010 | 81° | 62° | 71° | — | — |
| 2009 | 87° | 69° | 78° | — | — |
| 2008 | 74° | 50° | 62° | — | — |
| 2007 | 73° | 52° | 62° | — | — |
| 2006 | 71° | 64° | 68° | 4.93" | — |
| 2005 | 76° | 63° | 69° | — | — |
| 2004 | 86° | 68° | 77° | 3.84" | — |
| 2003 | 90° | 64° | 77° | — | — |
| 2002 | 83° | 66° | 74° | 0.08" | — |
| 2001 | 76° | 63° | 69° | 0.43" | — |
| 2000 | 71° | 50° | 61° | — | — |
| 1999 | 78° | 52° | 65° | — | — |
| 1998 | 77° | 52° | 64° | — | — |
| 1997 | 76° | 48° | 62° | — | — |
| 1996 | 85° | 48° | 66° | — | — |
| 1995coldest | 72° | 40° | 56° | — | — |
| 1994 | 73° | 64° | 69° | 0.08" | — |
| 1993 | 78° | 56° | 67° | — | — |
| 1992 | 73° | 49° | 61° | — | — |
| 1991 | 78° | 55° | 67° | 9.7" | — |
| 1990 | 70° | 48° | 59° | 0.56" | — |
| 1989 | 76° | 59° | 67° | 0.03" | — |
| 1988 | 87° | 54° | 70° | — | — |
| 1987 | 90° | 57° | 73° | — | — |
| 1986 | 76° | 59° | 67° | 0.08" | — |
| 1985 | 78° | 59° | 69° | — | — |
| 1984 | 78° | 52° | 65° | 1.32" | — |
| 1983warmest | 91° | 67° | 79° | — | — |
| 1982 | 76° | 63° | 69° | 0.1" | — |
| 1981 | 78° | 47° | 62° | — | — |
| 1980 | 66° | 58° | 62° | 0.36" | — |
| 1979 | 65° | 57° | 61° | — | — |
| 1978 | 86° | 61° | 73° | — | — |
| 1977 | 75° | 53° | 64° | — | — |
| 1976 | 76° | 47° | 61° | — | — |
| 1975 | 75° | 47° | 61° | — | — |
| 1974 | 88° | 57° | 72° | — | — |
| 1973 | 76° | 55° | 65° | — | — |
| 1972 | 82° | 51° | 67° | — | — |
| 1971 | 90° | 57° | 73° | 0.38" | — |
55 years of data from MANCHESTER