Weather on August 17
New Haven, CT
55 Years of Data
Avg High
83°F
Avg Low
65°F
Warmest
1978
82°F avg
Coldest
1992
61°F avg
About This Date
August 17th in New Haven, CT typically brings warm summer weather, with average highs around 83°F and lows near 65°F. Over 52 years of records, the warmest August 17th was in 1978 (82°F average), while the coldest was 1992 (61°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 31% of August 17th dates historically, with the wettest August 17th recording 2.79" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for August 17th in New Haven, CT? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 76° | 82° | — | — |
| 2024 | 78° | 70° | 74° | — | — |
| 2023 | 78° | 71° | 75° | — | — |
| 2022 | 84° | 67° | 75° | 0.3" | — |
| 2021 | 84° | 68° | 76° | — | — |
| 2020 | 80° | 62° | 71° | 0.41" | — |
| 2019 | 82° | 72° | 77° | 0.81" | — |
| 2018 | 88° | 71° | 79° | 0.43" | — |
| 2017 | 80° | 62° | 71° | — | — |
| 2016 | 84° | 71° | 78° | — | — |
| 2015 | 88° | 68° | 78° | — | — |
| 2014 | 82° | 68° | 75° | — | — |
| 2013 | 81° | 57° | 69° | — | — |
| 2012 | 86° | 62° | 74° | 0.2" | — |
| 2011 | 84° | 60° | 72° | — | — |
| 2010 | 86° | 71° | 79° | — | — |
| 2009 | 90° | 71° | 80° | — | — |
| 2008 | 81° | 61° | 71° | — | — |
| 2007 | 79° | 59° | 69° | 0.38" | — |
| 2006 | 82° | 64° | 73° | — | — |
| 2005 | 87° | 60° | 74° | — | — |
| 2004 | 73° | 57° | 65° | — | — |
| 2003 | 78° | 65° | 71° | 1.45" | — |
| 2002 | 89° | 69° | 79° | — | — |
| 2001 | 84° | 64° | 74° | 0.33" | — |
| 2000 | 81° | 54° | 67° | 0.03" | — |
| 1999 | 87° | 66° | 77° | — | — |
| 1996 | 82° | 66° | 74° | — | — |
| 1995 | 91° | 72° | 81° | — | — |
| 1993 | 91° | 63° | 77° | — | — |
| 1992coldest | 67° | 56° | 61° | 0.36" | — |
| 1991 | 86° | 68° | 77° | — | — |
| 1990 | 87° | 69° | 78° | — | — |
| 1989 | 85° | 69° | 77° | — | — |
| 1988 | 88° | 67° | 77° | 0.25" | — |
| 1987 | 93° | 67° | 80° | — | — |
| 1986 | 80° | 71° | 76° | 0.38" | — |
| 1985 | 82° | 58° | 70° | — | — |
| 1984 | 90° | 66° | 78° | — | — |
| 1983 | 86° | 62° | 74° | — | — |
| 1982 | 86° | 66° | 76° | 0.89" | — |
| 1981 | 87° | 55° | 71° | — | — |
| 1980 | 85° | 58° | 71° | — | — |
| 1979 | 78° | 55° | 67° | — | — |
| 1978warmest | 90° | 75° | 82° | — | — |
| 1977 | 77° | 68° | 73° | 2.79" | — |
| 1976 | 80° | 56° | 68° | — | — |
| 1975 | 64° | 59° | 62° | 0.25" | — |
| 1974 | 82° | 69° | 76° | 0.38" | — |
| 1973 | 77° | 67° | 72° | — | — |
| 1972 | 72° | 62° | 67° | — | — |
| 1971 | 85° | 56° | 70° | — | — |
52 years of data from NEW HAVEN