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Waterbury, CT weather and climate

New Haven County, CT · population 114,356 · about 351 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Waterbury's own coordinates.

The year at a glance

Sunny days
202
clear or partly cloudy, per year
Precipitation
45 in
per year
Wet days
125
rain or snow per year
Snowfall
43 in
per year
Hot days
13
above 90 °F
Freezing nights
127
at or below 32 °F
Humidity
71%
average relative
Average temperature
51 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 37 °FDaily high, Feb: 39 °FDaily high, Mar: 47 °FDaily high, Apr: 60 °FDaily high, May: 70 °FDaily high, Jun: 79 °FDaily high, Jul: 84 °FDaily high, Aug: 83 °FDaily high, Sep: 76 °FDaily high, Oct: 64 °FDaily high, Nov: 52 °FDaily high, Dec: 42 °FDaily low, Jan: 19 °FDaily low, Feb: 20 °FDaily low, Mar: 28 °FDaily low, Apr: 38 °FDaily low, May: 48 °FDaily low, Jun: 58 °FDaily low, Jul: 63 °FDaily low, Aug: 62 °FDaily low, Sep: 54 °FDaily low, Oct: 42 °FDaily low, Nov: 33 °FDaily low, Dec: 25 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high373947607079848376645242
Daily low192028384858636254423325

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovWaterbury, Jan: 3.5 inWaterbury, Feb: 3.1 inWaterbury, Mar: 4.2 inWaterbury, Apr: 3.8 inWaterbury, May: 3.4 inWaterbury, Jun: 3.9 inWaterbury, Jul: 3.5 inWaterbury, Aug: 4.1 inWaterbury, Sep: 4.0 inWaterbury, Oct: 4.2 inWaterbury, Nov: 3.5 inWaterbury, Dec: 4.2 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Waterbury3.53.14.23.83.43.93.54.14.04.23.54.2

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovWaterbury, Jan: 18 daysWaterbury, Feb: 16 daysWaterbury, Mar: 17 daysWaterbury, Apr: 16 daysWaterbury, May: 15 daysWaterbury, Jun: 15 daysWaterbury, Jul: 18 daysWaterbury, Aug: 18 daysWaterbury, Sep: 17 daysWaterbury, Oct: 19 daysWaterbury, Nov: 17 daysWaterbury, Dec: 17 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Waterbury181617161515181817191717

Compare Waterbury with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Connecticut city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).