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Waterbury, CT Weather on April 20
April 20th in Waterbury, CT typically brings mild spring weather, with average highs around 64°F and lows near 42°F. Over 53 years of records, the warmest April 20th was in 1976 (68°F average), while the coldest was 1997 (41°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 30% of April 20th dates historically, with the wettest April 20th recording 3.53" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on April 20
Planning for April 20th in Waterbury, CT? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
April 20 Weather Records for Waterbury
- •The all-time record high for April 20th in Waterbury, CT is 84°F, set in 1976.
- •The coldest April 20th on record dropped to 29°F in 2001.
- •A freeze (32°F or below) has occurred on April 20th in 5 of the last 53 years.
Frequently Asked Questions
What was the warmest April 20 ever in Waterbury?
The warmest April 20 in Waterbury, CT reached 84°F in 1976. That is 20°F above the long-term average high of 64°F.
What was the coldest April 20 ever in Waterbury?
The coldest April 20 in Waterbury, CT dropped to 29°F in 2001. That is 13°F below the long-term average low of 42°F.
What is the average temperature on April 20 in Waterbury?
On April 20, Waterbury averages a high of 64°F and a low of 42°F based on 53 years of NOAA weather observations from MT CARMEL.
How many years of weather data are available for April 20 in Waterbury?
We have 53 years of weather records for April 20 in Waterbury, CT, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 20 Weather History in Waterbury
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 74°F | 51°F | 0" | -- |
| 2024 | 62°F | 47°F | 0.18" | -- |
| 2023 | 62°F | 42°F | 0" | -- |
| 2022 | 60°F | 39°F | 0" | -- |
| 2021 | 68°F | 40°F | 0" | -- |
| 2020 | 59°F | 45°F | 0" | -- |
| 2019 | 73°F | 56°F | 1.42" | -- |
| 2018 | 50°F | 33°F | 0" | -- |
| 2017 | 54°F | 43°F | 0.81" | -- |
| 2016 | 68°F | 45°F | 0" | -- |
| 2015 | 79°F | 42°F | 0.03" | -- |
| 2014 | 54°F | 36°F | 0" | -- |
| 2013 | 60°F | 43°F | 0.53" | -- |
| 2012 | 68°F | 43°F | 0" | -- |
| 2011 | 55°F | 43°F | 0" | -- |
| 2010 | 70°F | 38°F | 0" | -- |
| 2009 | 49°F | 41°F | 1.75" | -- |
| 2008 | 60°F | 47°F | 0" | -- |
| 2007 | 69°F | 37°F | 0" | -- |
| 2006 | 77°F | 43°F | 0" | -- |
| 2005 | 80°F | 42°F | 0" | -- |
| 2004 | 72°F | 47°F | 0" | -- |
| 2003 | 60°F | 37°F | 0" | -- |
| 2002 | 74°F | 50°F | 0.1" | -- |
| 2001 | 65°F | 29°F | 0" | -- |
| 2000 | 66°F | 45°F | 0" | -- |
| 1998 | 57°F | 46°F | 3.53" | -- |
| 1997 | 36°F | 46°F | 0.18" | -- |
| 1996 | 66°F | 43°F | 0" | -- |
| 1995 | 65°F | 46°F | 0" | -- |
| 1994 | 70°F | 40°F | 0.1" | -- |
| 1993 | 64°F | 44°F | 0" | -- |
| 1991 | 56°F | 33°F | 0" | -- |
| 1990 | 60°F | 38°F | 0" | -- |
| 1989 | 60°F | 31°F | 0" | -- |
| 1988 | 54°F | 31°F | 0" | -- |
| 1987 | 71°F | 57°F | 0" | -- |
| 1986 | 65°F | 30°F | 0" | -- |
| 1985 | 58°F | 51°F | 0.1" | -- |
| 1984 | 59°F | 41°F | 0.05" | -- |
| 1983 | 48°F | 35°F | 0.15" | -- |
| 1982 | 66°F | 37°F | 0" | -- |
| 1981 | 64°F | 44°F | 0" | -- |
| 1980 | 70°F | 36°F | 0.13" | -- |
| 1979 | 64°F | 39°F | 0" | -- |
| 1978 | 57°F | 42°F | 2.49" | -- |
| 1977 | 66°F | 35°F | 0" | -- |
| 1976 | 84°F | 52°F | 0" | -- |
| 1975 | 66°F | 47°F | 0" | -- |
| 1974 | 57°F | 30°F | 0" | -- |
| 1973 | 63°F | 46°F | 0" | -- |
| 1972 | 72°F | 36°F | 2.08" | -- |
| 1971 | 68°F | 41°F | 0" | -- |
Based on 53 years of data from NOAA station: MT CARMEL
Monthly Climate Averages
Historical temperature and precipitation averages for Waterbury, CT, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.