Weather on April 21
New Haven, CT
55 Years of Data
Avg High
61°F
Avg Low
43°F
Warmest
1976
72°F avg
Coldest
1981
41°F avg
About This Date
April 21st in New Haven, CT typically brings mild spring weather, with average highs around 61°F and lows near 43°F. Over 54 years of records, the warmest April 21st was in 1976 (72°F average), while the coldest was 1981 (41°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 30% of April 21st dates historically, with the wettest April 21st recording 7.11" of rain. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in New Haven, CT? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 42° | 49° | 0.08" | — |
| 2024 | 53° | 38° | 45° | — | — |
| 2023 | 62° | 45° | 53° | — | — |
| 2022 | 59° | 35° | 47° | — | — |
| 2021 | 62° | 39° | 51° | 1.09" | — |
| 2020 | 54° | 37° | 45° | 1.09" | — |
| 2019 | 62° | 48° | 55° | 0.15" | — |
| 2018 | 62° | 38° | 50° | — | — |
| 2017 | 52° | 48° | 50° | 0.76" | — |
| 2016 | 65° | 36° | 50° | — | — |
| 2015 | 64° | 44° | 54° | 0.91" | — |
| 2014 | 60° | 30° | 45° | — | — |
| 2013 | 55° | 36° | 45° | — | — |
| 2012 | 68° | 55° | 62° | — | — |
| 2011 | 57° | 40° | 48° | — | — |
| 2010 | 67° | 40° | 53° | — | — |
| 2009 | 55° | 49° | 52° | 2.49" | — |
| 2008 | 58° | 45° | 51° | — | — |
| 2007 | 78° | 32° | 55° | — | — |
| 2006 | 57° | 44° | 51° | — | — |
| 2005 | 68° | 45° | 56° | — | — |
| 2004 | 54° | 45° | 49° | — | — |
| 2003 | 57° | 35° | 46° | 0.03" | — |
| 2002 | 60° | 49° | 54° | — | — |
| 2001 | 68° | 48° | 58° | 0.2" | — |
| 2000 | 50° | 45° | 47° | 7.11" | — |
| 1998 | 56° | 38° | 47° | — | — |
| 1997 | 38° | 58° | 48° | — | — |
| 1996 | 80° | 51° | 66° | — | — |
| 1995 | 65° | 47° | 56° | 0.18" | — |
| 1994 | 58° | 32° | 45° | — | — |
| 1993 | 66° | 48° | 57° | — | — |
| 1992 | 67° | 60° | 63° | 0.08" | — |
| 1991 | 50° | 37° | 44° | 1.83" | — |
| 1990 | 59° | 48° | 54° | 1.63" | — |
| 1989 | 60° | 42° | 51° | — | — |
| 1988 | 56° | 45° | 50° | — | — |
| 1987 | 76° | 58° | 67° | — | — |
| 1986 | 69° | 38° | 53° | 0.64" | — |
| 1985 | 72° | 47° | 59° | — | — |
| 1984 | 55° | 45° | 50° | — | — |
| 1983 | 53° | 39° | 46° | — | — |
| 1982 | 63° | 50° | 56° | — | — |
| 1981coldest | 51° | 30° | 41° | — | — |
| 1980 | 71° | 45° | 58° | — | — |
| 1979 | 65° | 42° | 53° | — | — |
| 1978 | 58° | 43° | 50° | — | — |
| 1977 | 73° | 49° | 61° | — | — |
| 1976warmest | 84° | 61° | 72° | — | — |
| 1975 | 57° | 43° | 50° | — | — |
| 1974 | 71° | 42° | 57° | — | — |
| 1973 | 57° | 44° | 51° | — | — |
| 1972 | 56° | 38° | 47° | 2.18" | — |
| 1971 | 65° | 40° | 52° | — | — |
54 years of data from NEW HAVEN