Weather on August 18
Manchester, NH
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
1987
82°F avg
Coldest
1979
58°F avg
About This Date
August 18th in Manchester, NH typically brings warm summer weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest August 18th was in 1987 (82°F average), while the coldest was 1979 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 38% of August 18th dates historically, with the wettest August 18th recording 4.93" 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 18th in Manchester, NH? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 55° | 66° | — | — |
| 2024 | 71° | 66° | 69° | 0.64" | — |
| 2023 | 82° | 63° | 72° | 1.17" | — |
| 2022 | 80° | 61° | 70° | 0.64" | — |
| 2021 | 86° | 71° | 79° | — | — |
| 2020 | 85° | 65° | 75° | 0.28" | — |
| 2019 | 89° | 67° | 78° | — | — |
| 2018 | 81° | 68° | 74° | 0.33" | — |
| 2017 | 71° | 63° | 67° | 4.93" | — |
| 2016 | 89° | 61° | 75° | — | — |
| 2015 | 94° | 69° | 81° | — | — |
| 2014 | 76° | 57° | 66° | — | — |
| 2013 | 80° | 60° | 70° | — | — |
| 2012 | 80° | 63° | 71° | 0.18" | — |
| 2011 | 87° | 60° | 74° | — | — |
| 2010 | 86° | 62° | 74° | — | — |
| 2009 | 94° | 71° | 82° | — | — |
| 2008 | 85° | 63° | 74° | 0.08" | — |
| 2007 | 71° | 57° | 64° | — | — |
| 2006 | 83° | 63° | 73° | — | — |
| 2005 | 76° | 56° | 66° | — | — |
| 2004 | 81° | 58° | 69° | — | — |
| 2003 | 77° | 64° | 71° | 0.33" | — |
| 2002 | 94° | 67° | 80° | — | — |
| 2001 | 83° | 64° | 73° | — | — |
| 2000 | 72° | 47° | 59° | 0.08" | — |
| 1999 | 83° | 65° | 74° | 0.23" | — |
| 1998 | 84° | 60° | 72° | 1.32" | — |
| 1997 | 88° | 51° | 69° | 0.15" | — |
| 1996 | 85° | 53° | 69° | — | — |
| 1995 | 87° | 59° | 73° | — | — |
| 1994 | 75° | 56° | 65° | 2.64" | — |
| 1993 | 81° | 63° | 72° | 1.17" | — |
| 1992 | 65° | 59° | 62° | 3.3" | — |
| 1991 | 87° | 65° | 76° | — | — |
| 1990 | 98° | 59° | 79° | — | — |
| 1989 | 83° | 55° | 69° | — | — |
| 1988 | 83° | 63° | 73° | 1.78" | — |
| 1987warmest | 95° | 70° | 82° | — | — |
| 1986 | 82° | 67° | 74° | 1.83" | — |
| 1985 | 80° | 54° | 67° | — | — |
| 1984 | 79° | 48° | 63° | — | — |
| 1983 | 90° | 63° | 76° | — | — |
| 1982 | 77° | 57° | 67° | — | — |
| 1981 | 68° | 52° | 60° | — | — |
| 1980 | 83° | 47° | 65° | — | — |
| 1979coldest | 72° | 45° | 58° | — | — |
| 1978 | 90° | 61° | 75° | — | — |
| 1977 | 77° | 56° | 66° | 0.15" | — |
| 1976 | 79° | 52° | 65° | — | — |
| 1975 | 75° | 58° | 66° | — | — |
| 1974 | 80° | 62° | 71° | 0.38" | — |
| 1973 | 85° | 59° | 72° | — | — |
| 1972 | 71° | 55° | 63° | 0.05" | — |
| 1971 | 90° | 48° | 69° | — | — |
55 years of data from MANCHESTER