Weather on May 20
Waterbury, CT
55 Years of Data
Avg High
70°F
Avg Low
49°F
Warmest
1996
76°F avg
Coldest
2002
46°F avg
About This Date
May 20th in Waterbury, CT typically brings pleasant spring weather, with average highs around 70°F and lows near 49°F. Over 52 years of records, the warmest May 20th was in 1996 (76°F average), while the coldest was 2002 (46°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 37% of May 20th dates historically, with the wettest May 20th recording 4.88" of rain. The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for May 20th in Waterbury, CT? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 50° | 58° | — | — |
| 2024 | 73° | 53° | 63° | — | — |
| 2023 | 66° | 52° | 59° | 4.88" | — |
| 2022 | 68° | 52° | 60° | 0.64" | — |
| 2021 | 75° | 51° | 63° | — | — |
| 2020 | 68° | 45° | 56° | — | — |
| 2019 | 72° | 61° | 66° | 0.58" | — |
| 2018 | 62° | 52° | 57° | 1.47" | — |
| 2017 | 91° | 55° | 73° | — | — |
| 2016 | 67° | 43° | 55° | — | — |
| 2015 | 70° | 50° | 60° | 0.51" | — |
| 2014 | 78° | 55° | 67° | — | — |
| 2013 | 61° | 55° | 58° | 1.3" | — |
| 2012 | 71° | 51° | 61° | — | — |
| 2011 | 67° | 55° | 61° | — | — |
| 2010 | 74° | 50° | 62° | — | — |
| 2009 | 77° | 49° | 63° | — | — |
| 2008 | 57° | 47° | 52° | 0.66" | — |
| 2007 | 74° | 51° | 62° | — | — |
| 2006 | 67° | 52° | 59° | — | — |
| 2005 | 57° | 43° | 50° | — | — |
| 2004 | 70° | 46° | 58° | — | — |
| 2003 | 75° | 43° | 59° | — | — |
| 2002coldest | 57° | 35° | 46° | — | — |
| 2001 | 70° | 49° | 59° | — | — |
| 2000 | 54° | 44° | 49° | 0.66" | — |
| 1996warmest | 95° | 57° | 76° | — | — |
| 1995 | 72° | 40° | 56° | — | — |
| 1994 | 63° | 43° | 53° | 0.3" | — |
| 1993 | 58° | 50° | 54° | 0.25" | — |
| 1992 | 76° | 35° | 55° | — | — |
| 1991 | 73° | 39° | 56° | — | — |
| 1990 | 64° | 46° | 55° | 0.08" | — |
| 1989 | 80° | 49° | 64° | — | — |
| 1988 | 70° | 53° | 61° | 0.97" | — |
| 1987 | 59° | 46° | 53° | — | — |
| 1986 | 72° | 59° | 65° | 0.18" | — |
| 1985 | 80° | 42° | 61° | — | — |
| 1984 | 74° | 53° | 63° | — | — |
| 1983 | 61° | 52° | 56° | 1.12" | — |
| 1982 | 82° | 57° | 70° | 0.79" | — |
| 1981 | 71° | 41° | 56° | — | — |
| 1980 | 76° | 59° | 67° | 0.03" | — |
| 1979 | 68° | 54° | 61° | — | — |
| 1978 | 86° | 49° | 67° | — | — |
| 1977 | 76° | 49° | 62° | — | — |
| 1976 | 67° | 42° | 54° | 0.05" | — |
| 1975 | 88° | 53° | 70° | — | — |
| 1974 | 67° | 42° | 54° | — | — |
| 1973 | 63° | 43° | 53° | 1.3" | — |
| 1972 | 60° | 50° | 55° | 2.84" | — |
| 1971 | 67° | 48° | 57° | — | — |
52 years of data from MT CARMEL