April weather forecast
Waterbury, CT

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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. April showers make their mark, assisting in the blooming of spring flowers and transforming Waterbury into a city brimming with life and color. While the occasional chill remains, the promise of summer's warmth leads the way.

Temperature

April brings a temperature increase, with average high-temperatures moving from March's chilly 44.1°F (6.7°C) to a mild 56.7°F (13.7°C). Waterbury encounters a steady low-temperature average of 39.7°F (4.3°C) throughout the month of April.

Humidity

With an average relative humidity of 72%, April is the least humid month.

Rainfall

In April, the rain falls for 15 days. Throughout April, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 158.5 rainfall days, and 34.57" (878mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Waterbury, in April, during 1.6 snowfall days, 1.46" (37mm) of snow is typically accumulated. Throughout the year, there are 34.9 snowfall days, and 20.35" (517mm) of snow is accumulated.

Daylight

In Waterbury, the average length of the day in April is 13h and 22min.
On the first day of April, sunrise is at 6:33 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:49 pm EDT.

Sunshine

The average sunshine in April is 8.1h.

UV index

The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 3 during April leads to these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.

Frequently asked questions

What is the temperature in April?

During April, Waterbury experiences an average high-temperature of 56.7°F (13.7°C) and a low-temperature of 39.7°F (4.3°C).

What is the least humid month?

With an average relative humidity of 72%, April is the least humid month.

What is the average humidity in April?

In Waterbury, the average relative humidity in April is 72%.

How much does it rain in Waterbury in April?

In April, the rain falls for 15 days. Throughout April, 2.99" (76mm) of precipitation is accumulated.

How much does it snow in April?

In April, it is snowing for 1.6 days. Throughout April, 1.46" (37mm) of snow is accumulated.

How many hours of daylight does Waterbury have in April?

The average day length in April is 13h and 22min.

When is the sunrise / sunset in April?

On the first day of April, sunrise is at 6:33 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:49 pm EDT.

How many hours of sunshine does Waterbury have in April?

In Waterbury, the average sunshine duration in April is 8.1h.

What is the UV index reading in April?

In Waterbury, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Waterbury, CT

Average temperature in April - Waterbury, CT
  • Average high temperature in April: 56.7°F

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).

  • Average low temperature in April: 39.7°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 in April
Waterbury, CT

Average pressure in April - Waterbury, CT
  • Average pressure in April: 29.98"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 in April
Waterbury, CT

Average wind speed in April - Waterbury, CT
  • Average wind speed in April: 7.8mph

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 in April
Waterbury, CT

Average humidity in April - Waterbury, CT
  • Average humidity in April: 72%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).

Average rainfall in April
Waterbury, CT

Average rainfall in April - Waterbury, CT
  • Average rainfall in April: 2.99"

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 in April
Waterbury, CT

Average rainfall days in April - Waterbury, CT
  • Average rainfall days in April: 15 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 in April
Waterbury, CT

Average snowfall in April - Waterbury, CT
  • Average snowfall in April: 1.46"

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 in April
Waterbury, CT

Average snowfall days in April - Waterbury, CT
  • Average snowfall days in April: 1.6 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 in April /
Average sunshine in April
Waterbury, CT

Average daylight in April / Average sunshine in April - Waterbury, CT
  • Average daylight in April: 13h and 2min

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 April: 8h and 1min

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 in April
Waterbury, CT

Average sunshine days in April - Waterbury, CT
  • Average sunshine days in April: 12.9 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 in April
Waterbury, CT

Average UV index in April - Waterbury, CT
  • Average UV index in April: 3

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 in April
Waterbury, CT

Average cloud cover in April - Waterbury, CT
  • Average cloud cover in April: 47

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 in April
Waterbury, CT

Average visibility in April - Waterbury, CT
  • Average visibility in April: 6mi

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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