Weather on September 1
New Haven, CT
55 Years of Data
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° | — | — |
New Haven, CT Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
New Haven, CT Monthly Precipitation
Average rainfall and snowfall per month, in inches.
New Haven, CT Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit New Haven, CT
New Haven, CT has no months that meet our "pleasant" threshold — every season has tradeoffs.