Weather on August 31
New Haven, CT
55 Years of Data
Avg High
81°F
Avg Low
63°F
Warmest
1980
81°F avg
Coldest
1976
59°F avg
About This Date
August 31st in New Haven, CT typically brings warm summer weather, with average highs around 81°F and lows near 63°F. Over 52 years of records, the warmest August 31st was in 1980 (81°F average), while the coldest was 1976 (59°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 23% of August 31st dates historically, with the wettest August 31st recording 1.32" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in New Haven, CT? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 56° | 68° | — | — |
| 2024 | 82° | 65° | 73° | — | — |
| 2023 | 79° | 59° | 69° | — | — |
| 2022 | 87° | 70° | 78° | 0.03" | — |
| 2021 | 85° | 68° | 76° | — | — |
| 2020 | 76° | 57° | 66° | — | — |
| 2019 | 82° | 62° | 72° | — | — |
| 2018 | 80° | 67° | 73° | — | — |
| 2017 | 81° | 59° | 70° | — | — |
| 2016 | 84° | 72° | 78° | — | — |
| 2015 | 86° | 72° | 79° | — | — |
| 2014 | 86° | 74° | 80° | 0.1" | — |
| 2013 | 81° | 73° | 77° | — | — |
| 2012 | 87° | 67° | 77° | — | — |
| 2011 | 83° | 58° | 70° | — | — |
| 2010 | 95° | 67° | 81° | — | — |
| 2009 | 72° | 56° | 64° | — | — |
| 2008 | 84° | 65° | 74° | — | — |
| 2007 | 84° | 62° | 73° | — | — |
| 2006 | 72° | 56° | 64° | 0.2" | — |
| 2005 | 83° | 72° | 77° | 0.2" | — |
| 2004 | 84° | 68° | 76° | 0.18" | — |
| 2003 | 70° | 56° | 63° | — | — |
| 2002 | 70° | 56° | 63° | 0.03" | — |
| 2001 | 83° | 72° | 77° | 0.1" | — |
| 2000 | 85° | 70° | 77° | — | — |
| 1999 | 79° | 54° | 66° | — | — |
| 1996 | 82° | 52° | 67° | — | — |
| 1995 | 85° | 45° | 65° | — | — |
| 1993 | 84° | 65° | 74° | — | — |
| 1992 | 80° | 64° | 72° | — | — |
| 1991 | 88° | 72° | 80° | — | — |
| 1990 | 85° | 62° | 73° | — | — |
| 1989 | 86° | 62° | 74° | — | — |
| 1988 | 86° | 62° | 74° | — | — |
| 1987 | 76° | 53° | 64° | — | — |
| 1986 | 76° | 46° | 61° | — | — |
| 1985 | 64° | 54° | 59° | 1.32" | — |
| 1984 | 83° | 67° | 75° | 1.02" | — |
| 1983 | 75° | 69° | 72° | — | — |
| 1982 | 79° | 61° | 70° | — | — |
| 1981 | 76° | 64° | 70° | — | — |
| 1980warmest | 89° | 73° | 81° | — | — |
| 1979 | 87° | 69° | 78° | — | — |
| 1978 | 76° | 61° | 68° | 0.43" | — |
| 1977 | 92° | 68° | 80° | 0.18" | — |
| 1976coldest | 72° | 47° | 59° | — | — |
| 1975 | 65° | 55° | 60° | — | — |
| 1974 | 83° | 59° | 71° | — | — |
| 1973 | 88° | 70° | 79° | 0.03" | — |
| 1972 | 86° | 60° | 73° | — | — |
| 1971 | 89° | 64° | 77° | — | — |
52 years of data from NEW HAVEN