April weather forecast and climate
Harwinton, CT

Weather in April

April is a mild spring month in Harwinton, Connecticut, with temperature in the range of an average high of 55.8°F (13.2°C) and an average low of 37.9°F (3.3°C).

Temperature

In April, the average high-temperature increases, from a cold 42.4°F (5.8°C) in March, to a moderate 55.8°F (13.2°C). In April, in Harwinton, the average low-temperature is 37.9°F (3.3°C).

Humidity

April is the least humid month in Harwinton, with an average relative humidity of 73%.

Rainfall

In April, in Harwinton, the rain falls for 15.6 days. Throughout April, 3.03" (77mm) of precipitation is accumulated. Throughout the year, in Harwinton, there are 157.7 rainfall days, and 32.72" (831mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Harwinton, during 1.9 snowfall days, 1.3" (33mm) of snow is typically accumulated. Throughout the year, there are 40 snowfall days, and 20.55" (522mm) of snow is accumulated.

Daylight

In Harwinton, Connecticut, the average length of the day is 13.4h.

Sunshine

The average sunshine is 8h.

UV index

In April, the average daily maximum UV index in Harwinton, Connecticut, is 3. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Harwinton?

The average high-temperature, in April, in Harwinton, is 55.8°F (13.2°C), while the average low-temperature is 37.9°F (3.3°C).

What is the least humid month in Harwinton?

With an average relative humidity of 73%, April is the least humid month in Harwinton, Connecticut.

What is the average humidity in April in Harwinton?

In April, the average relative humidity in Harwinton, Connecticut, is 73%.

How many days does it rain in April in Harwinton?

In April, in Harwinton, the rain falls for 15.6 days. Throughout April, 3.03" (77mm) of precipitation is accumulated.

How much does it snow in Harwinton in April?

In Harwinton, Connecticut, in April, snow falls for 1.9 days, with typically accumulated 1.3" (33mm) of snow.

How many hours of daylight does Harwinton have in April?

The average length of the day in April is 13.4h.

How many hours of sunshine does Harwinton have in April?

The average sunshine in April in Harwinton, Connecticut, is 8h.

What is the UV index intensity in April in Harwinton?

In Harwinton, Connecticut, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in April
Harwinton, CT

Average temperature in April - Harwinton, CT
  • Average high temperature in April: 55.8°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in April: 37.9°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

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Average pressure in April
Harwinton, CT

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

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in April
Harwinton, CT

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

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in April
Harwinton, CT

Average humidity in April - Harwinton, CT
  • Average humidity in April: 73%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in April
Harwinton, CT

Average rainfall in April - Harwinton, CT
  • Average rainfall in April: 3.03"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in April
Harwinton, CT

Average rainfall days in April - Harwinton, CT
  • Average rainfall days in April: 15.6 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in April
Harwinton, CT

Average snowfall in April - Harwinton, CT
  • Average snowfall in April: 1.3"

The month with the highest snowfall is February (5.28").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Harwinton, CT

Average snowfall days in April - Harwinton, CT
  • Average snowfall days in April: 1.9 days

The month with the highest number of snowfall days is February (10.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in April / Average sunshine in April - Harwinton, CT
  • Average daylight in April: 13.4h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in April: 8h

Months with the most sunshine are July and August (Average sunshine: 10.1h).
The month with the least sunshine is February (Average sunshine: 4.4h).

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Average sunshine days in April
Harwinton, CT

Average sunshine days in April - Harwinton, CT
  • Average sunshine days in April: 12 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in April
Harwinton, CT

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

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in April
Harwinton, CT

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

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in April
Harwinton, CT

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

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

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