Weather on August 20
Waterbury, CT
55 Years of Data
Avg High
81°F
Avg Low
62°F
Warmest
1983
80°F avg
Coldest
1990
61°F avg
About This Date
August 20th in Waterbury, CT typically brings warm summer weather, with average highs around 81°F and lows near 62°F. Over 51 years of records, the warmest August 20th was in 1983 (80°F average), while the coldest was 1990 (61°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 20th dates historically, with the wettest August 20th recording 1.85" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 20th in Waterbury, CT? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 59° | 67° | 1.85" | — |
| 2024 | 74° | 59° | 66° | — | — |
| 2023 | 83° | 60° | 71° | — | — |
| 2022 | 90° | 70° | 80° | — | — |
| 2021 | 84° | 74° | 79° | — | — |
| 2020 | 75° | 55° | 65° | 0.25" | — |
| 2019 | 91° | 69° | 80° | 1.12" | — |
| 2018 | 77° | 65° | 71° | — | — |
| 2017 | 87° | 65° | 76° | — | — |
| 2016 | 86° | 67° | 76° | — | — |
| 2015 | 85° | 71° | 78° | — | — |
| 2014 | 82° | 61° | 71° | — | — |
| 2013 | 81° | 61° | 71° | — | — |
| 2012 | 77° | 61° | 69° | — | — |
| 2011 | 83° | 68° | 75° | — | — |
| 2010 | 87° | 63° | 75° | — | — |
| 2009 | 88° | 72° | 80° | — | — |
| 2008 | 76° | 55° | 65° | — | — |
| 2007 | 72° | 60° | 66° | 0.05" | — |
| 2006 | 86° | 69° | 78° | 1.68" | — |
| 2005 | 79° | 67° | 73° | — | — |
| 2004 | 85° | 69° | 77° | — | — |
| 2003 | 85° | 66° | 75° | — | — |
| 2002 | 79° | 64° | 71° | 0.56" | — |
| 2001 | 81° | 68° | 74° | — | — |
| 1999 | 79° | 57° | 68° | 0.41" | — |
| 1996 | 84° | 56° | 70° | — | — |
| 1995 | 85° | 49° | 67° | — | — |
| 1993 | 95° | 63° | 79° | — | — |
| 1992 | 79° | 57° | 68° | — | — |
| 1991 | 72° | 60° | 66° | — | — |
| 1990coldest | 70° | 53° | 61° | 0.13" | — |
| 1989 | 83° | 67° | 75° | — | — |
| 1988 | 77° | 51° | 64° | — | — |
| 1987 | 86° | 61° | 73° | 0.53" | — |
| 1986 | 80° | 66° | 73° | — | — |
| 1985 | 76° | 66° | 71° | — | — |
| 1984 | 76° | 56° | 66° | 0.15" | — |
| 1983warmest | 93° | 67° | 80° | — | — |
| 1982 | 83° | 67° | 75° | — | — |
| 1981 | 81° | 54° | 67° | — | — |
| 1980 | 78° | 63° | 70° | 0.1" | — |
| 1979 | 78° | 59° | 69° | — | — |
| 1978 | 83° | 65° | 74° | — | — |
| 1977 | 75° | 52° | 63° | — | — |
| 1976 | 85° | 51° | 68° | — | — |
| 1975 | 76° | 57° | 66° | — | — |
| 1974 | 87° | 58° | 72° | — | — |
| 1973 | 80° | 58° | 69° | — | — |
| 1972 | 81° | 56° | 68° | — | — |
| 1971 | 86° | 65° | 75° | 0.05" | — |
51 years of data from MT CARMEL