April weather forecast
Haddam, CT

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Weather in April

April is a moderate spring month in Haddam, Connecticut, with an average temperature fluctuating between 40.3°F (4.6°C) and 56.7°F (13.7°C).

Temperature

April marks a rise in the average high-temperature, moving from March's frosty 45°F (7.2°C) to a moderate 56.7°F (13.7°C). April sees the temperature falling to a mean low of 40.3°F (4.6°C).

Humidity

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

Rainfall

In Haddam, in April, it is raining for 10.6 days, with typically 1.1" (28mm) of accumulated precipitation. In Haddam, during the entire year, the rain falls for 109.9 days and collects up to 11.14" (283mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Haddam, in April, during 0.6 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Haddam, during the entire year, snow falls for 19.9 days and aggregates up to 3.7" (94mm) of snow.

Daylight

In April, the average length of the day is 13h and 22min.
On the first day of April, sunrise is at 6:31 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm EDT.

Sunshine

In Haddam, the average sunshine in April is 8h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 3 in April interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in April?

In Haddam, 56.7°F (13.7°C) is the average high-temperature and 40.3°F (4.6°C) is the average low-temperature during April.

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 Haddam?

The average relative humidity in April in Haddam is 72%.

How much does it rain in Haddam in April?

In Haddam, in April, during 10.6 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

How much does it snow in April?

In Haddam, Connecticut, in April, during 0.6 snowfall days, 0.04" (1mm) of snow is typically accumulated.

How many hours of daylight does Haddam have in April?

In April, the average day length is 13h and 22min.

When are sunrise and sunset in April?

In April, on the first day of the month, sunrise is at 6:31 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm EDT.

How many hours of sunshine does Haddam have in April?

In April, the average sunshine duration is 8h.

What is the UV index reading in April?

In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Haddam, CT

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

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in April: 40.3°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in April
Haddam, CT

Average pressure in April - Haddam, CT
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
Haddam, CT

Average wind speed in April - Haddam, CT
  • Average wind speed in April: 8.2mph

The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in April
Haddam, CT

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

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in April
Haddam, CT

Average rainfall in April - Haddam, CT
  • Average rainfall in April: 1.1"

The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.39").

Average rainfall days in April
Haddam, CT

Average rainfall days in April - Haddam, CT
  • Average rainfall days in April: 10.6 days

The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is January (5.9 days).

Average snowfall in April
Haddam, CT

Average snowfall in April - Haddam, CT
  • Average snowfall in April: 0.04"

The month with the highest snowfall is March (1.14").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in April
Haddam, CT

Average snowfall days in April - Haddam, CT
  • Average snowfall days in April: 0.6 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in April /
Average sunshine in April
Haddam, CT

Average daylight in April / Average sunshine in April - Haddam, 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 0min

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
Haddam, CT

Average sunshine days in April - Haddam, CT
  • Average sunshine days in April: 17.3 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (16.3 days).

Average UV index in April
Haddam, CT

Average UV index in April - Haddam, 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
Haddam, CT

Average cloud cover in April - Haddam, CT
  • Average cloud cover in April: 48

The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in April
Haddam, CT

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

The months with the highest visibility are January, March, April, September, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and August (5mi).

Haddam, Connecticut, USA

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