Weather on September 1
New Haven, CT
55 Years of Data
Avg High
80°F
Avg Low
61°F
Warmest
1980
84°F avg
Coldest
1975
59°F avg
About This Date
September 1st in New Haven, CT typically brings warm fall weather, with average highs around 80°F and lows near 61°F. Over 53 years of records, the warmest September 1st was in 1980 (84°F average), while the coldest was 1975 (59°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 19% of September 1st dates historically, with the wettest September 1st recording 10.08" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for September 1st in New Haven, CT? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 59° | 69° | — | — |
| 2024 | 82° | 73° | 78° | 0.03" | — |
| 2023 | 76° | 55° | 65° | — | — |
| 2022 | 86° | 64° | 75° | — | — |
| 2021 | 72° | 64° | 68° | 10.08" | — |
| 2020 | 79° | 66° | 72° | — | — |
| 2019 | 77° | 59° | 68° | — | — |
| 2018 | 77° | 65° | 71° | — | — |
| 2017 | 71° | 51° | 61° | — | — |
| 2016 | 76° | 68° | 72° | 0.3" | — |
| 2015 | 86° | 67° | 76° | — | — |
| 2014 | 87° | 75° | 81° | — | — |
| 2013 | 81° | 74° | 77° | — | — |
| 2012 | 87° | 67° | 77° | — | — |
| 2011 | 79° | 62° | 70° | — | — |
| 2010 | 91° | 70° | 80° | — | — |
| 2009 | 74° | 53° | 63° | — | — |
| 2008 | 85° | 58° | 71° | — | — |
| 2007 | 78° | 55° | 67° | — | — |
| 2006 | 69° | 56° | 62° | — | — |
| 2005 | 86° | 62° | 74° | — | — |
| 2004 | 79° | 59° | 69° | — | — |
| 2003 | 67° | 60° | 63° | 0.81" | — |
| 2002 | 66° | 54° | 60° | 0.33" | — |
| 2001 | 79° | 56° | 67° | — | — |
| 2000 | 83° | 70° | 76° | — | — |
| 1999 | 83° | 51° | 67° | — | — |
| 1997 | 84° | 66° | 75° | — | — |
| 1996 | 81° | 58° | 69° | — | — |
| 1995 | 84° | 65° | 74° | 0.25" | — |
| 1993 | 86° | 70° | 78° | — | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 83° | 53° | 68° | — | — |
| 1990 | 95° | 69° | 82° | — | — |
| 1989 | 79° | 60° | 69° | — | — |
| 1988 | 80° | 56° | 68° | — | — |
| 1987 | 74° | 62° | 68° | 0.86" | — |
| 1986 | 76° | 50° | 63° | — | — |
| 1985 | 73° | 51° | 62° | — | — |
| 1984 | 83° | 57° | 70° | — | — |
| 1983 | 82° | 65° | 73° | — | — |
| 1982 | 78° | 66° | 72° | 0.38" | — |
| 1981 | 70° | 63° | 66° | 4.01" | — |
| 1980warmest | 94° | 74° | 84° | — | — |
| 1979 | 85° | 61° | 73° | — | — |
| 1978 | 77° | 62° | 70° | — | — |
| 1977 | 86° | 66° | 76° | 0.03" | — |
| 1976 | 77° | 57° | 67° | — | — |
| 1975coldest | 70° | 49° | 59° | — | — |
| 1974 | 84° | 69° | 77° | — | — |
| 1973 | 83° | 67° | 75° | — | — |
| 1972 | 83° | 60° | 71° | — | — |
| 1971 | 80° | 53° | 67° | — | — |
53 years of data from NEW HAVEN