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Waterbury (CT) Climate by Month

The temperature in Waterbury can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and cold during the cooler months. It also has a notably wet climate with much precipitation. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Visitors to Waterbury can expect significant temperature changes throughout the year. Average daytime temperatures range from a comfortable 28°C in July, the warmest time of the year, to a chilly 2°C during cooler months like February. At night, temperatures typically average around -8°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Waterbury is known for its substantial rain/snowfall, with annual precipitation reaching 1319 mm. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 149 mm of precipitation, spread over 14 rainy days. In contrast, January experiences a drier climate, with about 83 mm of snow/rainfall spread across 11 snowy/rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Waterbury. While July receives considerable daily sunshine with up to 9.8 hours, November marks the darkest time of the year, where sunshine is scarce with only 4.6 hours of sunlight per day.

Monthly hours of sunshine

Data from: Hartford, the United States of America (38 KM, 23 Miles).

Daily hours of sunshine

Data from: Hartford, the United States of America (38 KM, 23 Miles).

The best time of year to visit Waterbury in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Waterbury?
    July has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Waterbury?
    The coldest month is February with an average maximum temperature of 2°C.
  • Which is the wettest month in Waterbury?
    June tops the wettest month list with 149 mm of rainfall.
  • Which is the driest month in Waterbury?
    January is the driest month with 83 mm of precipitation.
  • Which is the sunniest month in Waterbury?
    July is the sunniest month with an average of 293 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Waterbury (CT)

    Thu   Nov 21
    8°C | 5°C
    NE 18 km/h
    30 mm
    broken clouds and rain

    broken clouds and rain

    Fri   Nov 22
    6°C | 2°C
    S 18 km/h
    16 mm
    overcast and heavy rain

    overcast and heavy rain

    Sat   Nov 23
    7°C | 1°C
    NW 25 km/h
    1.4 mm
    overcast and rain

    overcast and rain