Weather on October 18
New Haven, CT
55 Years of Data
Avg High
63°F
Avg Low
44°F
Warmest
1980
69°F avg
Coldest
2015
38°F avg
About This Date
October 18th in New Haven, CT typically brings mild fall weather, with average highs around 63°F and lows near 44°F. Over 54 years of records, the warmest October 18th was in 1980 (69°F average), while the coldest was 2015 (38°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 28% of October 18th dates historically, with the wettest October 18th recording 6.91" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for October 18th in New Haven, CT? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 42° | 53° | — | — |
| 2024 | 70° | 39° | 54° | — | — |
| 2023 | 67° | 52° | 59° | — | — |
| 2022 | 59° | 44° | 52° | — | — |
| 2021 | 60° | 47° | 53° | 0.15" | — |
| 2020 | 64° | 37° | 51° | — | — |
| 2019 | 63° | 48° | 55° | — | — |
| 2018 | 51° | 34° | 42° | — | — |
| 2017 | 68° | 48° | 58° | — | — |
| 2016 | 77° | 55° | 66° | — | — |
| 2015coldest | 47° | 29° | 38° | — | — |
| 2014 | 69° | 59° | 64° | — | — |
| 2013 | 68° | 49° | 58° | — | — |
| 2012 | 66° | 41° | 54° | — | — |
| 2011 | 67° | 47° | 57° | — | — |
| 2010 | 61° | 42° | 51° | — | — |
| 2009 | 46° | 40° | 43° | 1.93" | — |
| 2008 | 58° | 39° | 48° | — | — |
| 2007 | 71° | 56° | 63° | 0.03" | — |
| 2006 | 70° | 49° | 59° | 0.33" | — |
| 2005 | 70° | 45° | 57° | 0.05" | — |
| 2004 | 59° | 45° | 52° | 0.1" | — |
| 2003 | 55° | 36° | 45° | 0.15" | — |
| 2002 | 56° | 38° | 47° | — | — |
| 2001 | 57° | 30° | 44° | — | — |
| 2000 | 53° | 49° | 51° | 1.37" | — |
| 1999 | 59° | 40° | 49° | 1.45" | — |
| 1997 | 61° | 38° | 49° | — | — |
| 1996 | 70° | 47° | 58° | — | — |
| 1995 | 63° | 34° | 48° | — | — |
| 1994 | 68° | 39° | 54° | — | — |
| 1993 | 65° | 45° | 55° | 0.05" | — |
| 1992 | 54° | 29° | 41° | — | — |
| 1991 | 74° | 48° | 61° | 1.22" | — |
| 1990 | 73° | 64° | 69° | 2.74" | — |
| 1989 | 66° | 43° | 54° | — | — |
| 1988 | 67° | 59° | 63° | — | — |
| 1987 | 72° | 55° | 63° | — | — |
| 1986 | 55° | 39° | 47° | — | — |
| 1985 | 64° | 36° | 50° | — | — |
| 1984 | 67° | 54° | 60° | — | — |
| 1983 | 65° | 53° | 59° | — | — |
| 1982 | 56° | 34° | 45° | — | — |
| 1981 | 62° | 40° | 51° | 4.19" | — |
| 1980warmest | 73° | 64° | 69° | — | — |
| 1979 | 67° | 53° | 60° | — | — |
| 1978 | 55° | 30° | 43° | — | — |
| 1977 | 57° | 40° | 48° | — | — |
| 1976 | 50° | 37° | 44° | — | — |
| 1975 | 60° | 51° | 56° | 6.91" | — |
| 1974 | 58° | 38° | 48° | — | — |
| 1973 | 53° | 42° | 48° | 0.05" | — |
| 1972 | 60° | 37° | 49° | — | — |
| 1971 | 66° | 43° | 54° | — | — |
54 years of data from NEW HAVEN