Historical Weather in Waterbury, CT
See 55+ years of weather history for any date in Waterbury going back to 1970.
Part of Connecticut weather history · Connecticut temperature records
Look Up a Specific Date
Today in Waterbury Weather HistorySee records, averages, and 55+ years of data for today's date
→Trending Now
Monthly Climate Averages
Historical temperature and precipitation averages for Waterbury, CT, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 84°F / Low: 65°F
Coldest MonthJanuaryAvg High: 38°F / Low: 22°F
Jan
38°/ 22°
💧 9.0"
❄️ 2.0"
Feb
41°/ 24°
💧 9.2"
❄️ 2.3"
Mar
48°/ 31°
💧 10.4"
❄️ 2.1"
Apr
59°/ 40°
💧 11.9"
❄️ 2.3"
May
70°/ 49°
💧 9.4"
Jun
78°/ 59°
💧 10.3"
Jul
84°/ 65°
💧 10.8"
Aug
83°/ 64°
💧 11.1"
Sep
75°/ 56°
💧 12.5"
Oct
64°/ 45°
💧 12.6"
❄️ 0.9"
Nov
53°/ 36°
💧 10.6"
❄️ 2.0"
Dec
43°/ 27°
💧 9.9"
❄️ 1.7"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Waterbury, CT Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Avg high Avg low
Waterbury, CT Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rain (in) Snow (in)
Waterbury, CT Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Cooler
Hotter
20°40°60°80°100°
Best Time to Visit Waterbury, CT
Waterbury, CT has no months that meet our "pleasant" threshold — every season has tradeoffs.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal
Waterbury Temperature Records
- Record High: The hottest temperature ever recorded in Waterbury, CT is 103°F, set on July 15, 1995.
- Record Low: The coldest temperature ever recorded in Waterbury, CT is -15°F, set on January 12, 1981.
- Data Coverage: Based on 51 years of data from NOAA weather station: MT CARMEL.
All-Time Record High
103°F
July 15, 1995
All-Time Record Low
-15°F
January 12, 1981
Monthly Temperature Records in Waterbury
| Month | Record High | Record Low |
|---|---|---|
| January | 74°F(2020) | -15°F(1981) |
| February | 76°F(2018) | -13°F(1979) |
| March | 83°F(1998) | -1°F(2003) |
| April | 95°F(2002) | 14°F(1970) |
| May | 96°F(2010) | 28°F(1974) |
| June | 101°F(2025) | 36°F(1972) |
| July | 103°F(1995) | 42°F(1988) |
| August | 102°F(2001) | 39°F(1976) |
| September | 97°F(2015) | 31°F(1974) |
| October | 89°F(2019) | 20°F(1972) |
| November | 82°F(2024) | 6°F(1989) |
| December | 72°F(2001) | -13°F(1980) |
Waterbury Snow RecordsSee the top 10 snowiest days ever recorded
→Holiday Weather in Waterbury
Weather Analysis & Trends
RecordsHottest Temperatures Ever Recorded in Every US StateAll 50 state record highs ranked, including Connecticut.Severe WeatherTornado Season 2026: Forecasts & What to ExpectAn EF5 already, and the peak still ahead.Climate ForecastEl Niño 2026: What Every US Region Should Expect85% likely by late 2026. Region-by-region impact analysis.