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Contents
- The climate of Waterbury
- The best time to visit Waterbury
- The worst time to visit Waterbury
- Spring weather in Waterbury
- Summer weather in Waterbury
- Autumn weather in Waterbury
- Winter weather in Waterbury
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Waterbury
Lying in the northeastern United States, Waterbury, Connecticut, falls under the Köppen Dfb climate classification, signifying a humid continental climate with no dry season and a warm summer. Weather patterns swirl around yearly average temperatures, ranging from a low of 21.4°F (-5.9°C) in January to a high of 82.4°F (28°C) in July, revealing the true four-season climate that distinguishes this region.
A consistent feature of Waterbury's climate is relative humidity, hovering between 72% and 80% throughout the year. Rainfall distributes fairly evenly with the wettest month being December at 3.78" (96mm) and the driest September at 2.13" (54mm). Monthly rainfall days span from 7.3 in January to a maximum of 17.8 in July.
Snowfall occurs primarily in the winter months, with the highest accumulation being 5.39" (137mm) in February. The city experiences snowfall days mainly between November and April, with February witnessing the highest count of 9.2 days. Waterbury also has a notable range in daylight hours, reaching a peak of 15.1 hours in June and hitting a low of 9.2 hours in December.
A consistent feature of Waterbury's climate is relative humidity, hovering between 72% and 80% throughout the year. Rainfall distributes fairly evenly with the wettest month being December at 3.78" (96mm) and the driest September at 2.13" (54mm). Monthly rainfall days span from 7.3 in January to a maximum of 17.8 in July.
Snowfall occurs primarily in the winter months, with the highest accumulation being 5.39" (137mm) in February. The city experiences snowfall days mainly between November and April, with February witnessing the highest count of 9.2 days. Waterbury also has a notable range in daylight hours, reaching a peak of 15.1 hours in June and hitting a low of 9.2 hours in December.
The best time to visit Waterbury
The ideal time to visit Waterbury hinges largely on the preferred weather conditions. May to September offer the most favourable temperatures, fluctuating between 68.2°F (20.1°C) and 82.4°F (28°C). These months also present longer daylight hours, spanning from 14.5 to 15.1 hours, allowing extra time for outdoor activities.
Following the yearly weather patterns, maximum sunshine hours coincide with the warmer months between May and August, ranging from 8.2 to 10.1 hours. This period also coincides with a lower cloud percentage, averaging between 35% and 49%, providing a good opportunity for clear sky viewing.
Following the yearly weather patterns, maximum sunshine hours coincide with the warmer months between May and August, ranging from 8.2 to 10.1 hours. This period also coincides with a lower cloud percentage, averaging between 35% and 49%, providing a good opportunity for clear sky viewing.
The worst time to visit Waterbury
Venturing to Waterbury during the winter may pose some challenges. The chilliest months from December to February record low temperatures, dropping to 21.4°F (-5.9°C) and 21.9°F (-5.6°C) respectively. Snowfall is also quite high during this period, reaching up to 5.39" (137mm) in February.
Additionally, these colder months also record less sunshine hours, dropping as low as 4.5 hours in February. Moreover, cloud percentage reaches a peak of 51% in February, leading to fewer clear skies.
Additionally, these colder months also record less sunshine hours, dropping as low as 4.5 hours in February. Moreover, cloud percentage reaches a peak of 51% in February, leading to fewer clear skies.
Spring weather in Waterbury
Spring in Waterbury comes with a steady increase in temperatures, marking the transition from the freezing winter months. Temperatures in March average from 29.1°F (-1.6°C) to 44.1°F (6.7°C) and rise to range between 38.7°F (3.7°C) to 56.7°F (13.7°C) in April. By May, temperatures stabilize between 48.9°F (9.4°C) to 68.2°F (20.1°C), signalling the onset of the warm season.
The daylight hours also extend from 12 hours in March to 14.5 hours in May. Despite increased rainfall in this season, sunshine hours also boost with each passing month, ensuring pleasant outdoor conditions.
The daylight hours also extend from 12 hours in March to 14.5 hours in May. Despite increased rainfall in this season, sunshine hours also boost with each passing month, ensuring pleasant outdoor conditions.
Summer weather in Waterbury
Summers in Waterbury are known for warm, humid conditions. Temperatures in June register between 56.7°F (13.7°C) and 76.1°F (24.5°C), with July witnessing the highest average temperatures from 63.1°F (17.3°C) to 82.4°F (28°C). August sees temperatures ranging from 61.7°F (16.5°C) to 80.6°F (27°C).
While the rainfall is slightly higher during this season, Waterbury also experiences maximum sunshine hours, hitting a peak at 10.1 hours in both July and August. The daylight hours are the longest in the year, allowing tourists ample time to explore the city.
While the rainfall is slightly higher during this season, Waterbury also experiences maximum sunshine hours, hitting a peak at 10.1 hours in both July and August. The daylight hours are the longest in the year, allowing tourists ample time to explore the city.
Autumn weather in Waterbury
Autumn in Waterbury is characterized by cooling temperatures and gradually shortening daylight. September experiences temperatures from 55.6°F (13.1°C) to 73.2°F (22.9°C) while October sees a drop between 46.6°F (8.1°C) to 61°F (16.1°C). November marks the onset of winter-like weather with temperatures falling between 35.6°F (2°C) to 48.6°F (9.2°C).
Although rainfall in September is at its lowest point in the year, there is an increase in October and November. However, these months also display a decline in cloud cover percentage, presenting clearer skies.
Although rainfall in September is at its lowest point in the year, there is an increase in October and November. However, these months also display a decline in cloud cover percentage, presenting clearer skies.
Winter weather in Waterbury
During winter, Waterbury witnesses a drop in temperatures with December averaging between 28°F (-2.2°C) and 38.7°F (3.7°C), leading into the coldest months of January and February. The city also experiences considerable snowfall during this season, specifically from December to February.
In terms of sunlight, December records the shortest amount of daylight hours at 9.2. Nevertheless, sunny days are quite prevalent during the winter months, with December and January recording up to 4.7 hours of sunshine per day. While this season may be cold, it certainly is not devoid of its bright moments.
In terms of sunlight, December records the shortest amount of daylight hours at 9.2. Nevertheless, sunny days are quite prevalent during the winter months, with December and January recording up to 4.7 hours of sunshine per day. While this season may be cold, it certainly is not devoid of its bright moments.
Weather in January
January in Waterbury, Connecticut is typically the coldest month. Low and high temperatures range from 21.4°F (-5.9°C) to 33.3°F (0.7°C). Winters are marked by gray skies, regular snow showers, and biting winds. With a UV index at the minimum and overcast skies for almost 50% of the time, this month marks the start of an extended getting-cold season in Waterbury. Weather in January »
Weather in February
In February, winter holds its grip on Waterbury. The temperatures climb marginally from January, ranging between 21.9°F (-5.6°C) and 36°F (2.2°C). February also experiences an increased frequency of snowfall compared to the previous month. Weather in February »
Weather in March
With Spring around the corner, March observes a significant increase in temperature. The temperatures vary from 29.1°F (-1.6°C) to 44.1°F (6.7°C), making the month relatively warmer. An increase in daylight hours and reduced snowfall are signs of Spring's approaching footsteps. Weather in March »
Weather in April
April marks a visible shift towards spring as temperatures start to rise, fluctuating from 39.7°F (4.3°C) to 56.7°F (13.7°C) - a notable increase from March. The increasing sunshine hours breathe new life into the city as residents prepare for warmer days ahead. Weather in April »
Weather in May
May in Waterbury offers a prelude to summer, with temperatures rising between 48.9°F (9.4°C) to 68.2°F (20.1°C). This is the month when outdoor activities become commonplace following the retreat of cold weather. May sees the city basking in sunlight with the landscape painted in varied shades of green. Weather in May »
Weather in June
As June arrives, temperatures range between 56.7°F (13.7°C) and 76.1°F (24.5°C), indicating the onset of summer. People flock to parks and outdoor spaces to soak up the warm sunshine. Long strolls along the river and picnics in the park become the norm during these sunny days. Weather in June »
Weather in July
At the peak of summer, July experiences the highest temperatures of the year ranging from 63.1°F (17.3°C) to 82.4°F (28°C). The city shines in all its summer glory with clear skies and late sunsets. July is the month of picnics, barbecues, and lazy afternoons by the beach. Weather in July »
Weather in August
August sees a slight dip in temperatures compared to July, from 61.7°F (16.5°C) to 80.6°F (27°C), signaling the beginning of the end of summer. The city continues to bask in the summer spirit with beach visits, BBQs, and music festivals. Weather in August »
Weather in September
September in Waterbury serves as a herald of Autumn with temperatures dropping from 73.2°F (22.9°C) to 55.6°F (13.1°C) by the end of the month. The transition from the warm to cooler weather is gradual, making this month a buffer period. Weather in September »
Weather in October
October brings a crisp chill in the air as temperatures recede to range between 46.6°F (8.1°C) and 61°F (16.1°C). The rich kaleidoscope of Fall colors is at its peak, painting a picturesque view of Waterbury. Maple, oak, and birch trees exhibit vibrant shades of red, yellow, and orange, transforming the city into a canvas of warm hues. Weather in October »
Weather in November
As November unfurls, temperatures continue to decrease between 35.6°F (2°C) and 48.6°F (9.2°C), and the city is entirely in the grip of late fall. The first signs of winter are now visible with a marked change in weather. The trees continue to shed leaves, and residents brace themselves for the cold season. Weather in November »
Weather in December
December welcomes winters with temperatures dropping between 28°F (-2.2°C) and 38.7°F (3.7°C). The city dresses up for the festive season against a backdrop of snow flurries. With fairytale-like scenes of snow-dusted trees and rooftops, the holiday spirit of the residents finds a match in the wintry surroundings. Weather in December »
Updated: Jun 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
In Waterbury, the average lowest temperatures are observed in January, with a high of 33.3°F (0.7°C) and a low of 21.4°F (-5.9°C).
How many days does it rain?
In Waterbury, during the entire year, the rain falls for 158.5 days and collects up to 34.57" (878mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
Throughout the year, there are 34.9 snowfall days, and 20.35" (517mm) of snow is accumulated.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month?
With an average relative humidity of 80%, February is the most humid month.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 9.2 days and typically aggregates up to 5.39" (137mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.5h of sunshine.
When is Daylight Saving Time (DST) in Waterbury?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
With an average relative humidity of 72%, April is the least humid month.
When it does not snow?
In Waterbury, Connecticut, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 6min of daylight, June has the longest days of the year in Waterbury, Connecticut.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What month is the hottest?
July, characterized by an average high temperature of 82.4°F (28°C) and a low temperature of 63.1°F (17.3°C), is generally the warmest month.
What are the months with the most sunshine?
July and August, with an average of 10.1h of sunshine, are months with the most sunshine.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 13 days and typically collects 2.13" (54mm) of precipitation.
What is the wettest month in Waterbury?
December is the month with the most rainfall in Waterbury. Rain falls for 10.5 days and accumulates 3.78" (96mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Waterbury, CT
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure
Waterbury, CT
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Waterbury, CT
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.2mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.8mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.9mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity
Waterbury, CT
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Waterbury, CT
- Average rainfall in January:
2.36" - Average rainfall in February:
2.44" - Average rainfall in March:
2.72" - Average rainfall in April:
2.99" - Average rainfall in May:
2.64" - Average rainfall in June:
3.03"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.91" - Average rainfall in September:
2.13" - Average rainfall in October:
3.43" - Average rainfall in November:
2.95" - Average rainfall in December:
3.78"
The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days
Waterbury, CT
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
8 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
15 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
13 days - Average rainfall days in October:
14.4 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Waterbury, CT
- Average snowfall in January:
4.13" - Average snowfall in February:
5.39" - Average snowfall in March:
4.45" - Average snowfall in April:
1.46" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Waterbury, CT
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
8 days - Average snowfall days in April:
1.6 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
6.2 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Waterbury, CT
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Waterbury, CT
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Waterbury, CT
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Waterbury, CT
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Waterbury, CT
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Waterbury, Connecticut, USA
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