April weather forecast and climate
Port Heiden, AK

Weather in April

April in Port Heiden, Alaska, is a cold spring month, with temperature in the range of an average low of 30.9°F (-0.6°C) and an average high of 37.8°F (3.2°C).

Temperature

In Port Heiden, the average high-temperature in April marginally rises, from a subzero cold 30.4°F (-0.9°C) in March, to a wintry 37.8°F (3.2°C). In Port Heiden, in April, the average low-temperature is 30.9°F (-0.6°C).

Humidity

In Port Heiden, the average relative humidity in April is 82%.

Rainfall

In Port Heiden, during April, the rain falls for 11.1 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 160.7 rainfall days, and 16.57" (421mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Port Heiden, during 9.2 snowfall days, 2.28" (58mm) of snow is typically accumulated. In Port Heiden, during the entire year, snow falls for 83.4 days, and aggregates up to 23.94" (608mm) of snow.

Daylight

In Port Heiden, Alaska, the average length of the day is 14.4h.

Sunshine

The average sunshine in Port Heiden is 5.4h.

UV index

The average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 Port Heiden?

The average high-temperature, in April, in Port Heiden, Alaska, is 37.8°F (3.2°C), while the average low-temperature is 30.9°F (-0.6°C).

What is the average humidity in April in Port Heiden?

In April, the average relative humidity in Port Heiden is 82%.

How many days does it rain in April in Port Heiden?

In Port Heiden, during April, the rain falls for 11.1 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How much does it snow in Port Heiden in April?

In Port Heiden, Alaska, in April, snow falls for 9.2 days, with typically accumulated 2.28" (58mm) of snow.

How many hours of daylight does Port Heiden have in April?

The average length of the day in April is 14.4h.

How many hours of sunshine does Port Heiden have in April?

In Port Heiden, the average sunshine in April is 5.4h.

What is the UV index reading in April in Port Heiden?

In Port Heiden, Alaska, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in April
Port Heiden, AK

Average temperature in April - Port Heiden, AK
  • Average high temperature in April: 37.8°F

The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in April: 30.9°F

The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).

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Average pressure in April
Port Heiden, AK

Average pressure in April - Port Heiden, AK
  • Average pressure in April: 29.74"

The month with the highest atmospheric pressure is July (29.97").
The month with the lowest atmospheric pressure is December (29.54").

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Average wind speed in April
Port Heiden, AK

Average wind speed in April - Port Heiden, AK
  • Average wind speed in April: 11.6mph

The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).

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Average humidity in April
Port Heiden, AK

Average humidity in April - Port Heiden, AK
  • Average humidity in April: 82%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).

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Average rainfall in April
Port Heiden, AK

Average rainfall in April - Port Heiden, AK
  • Average rainfall in April: 0.94"

The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").

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Average rainfall days in April
Port Heiden, AK

Average rainfall days in April - Port Heiden, AK
  • Average rainfall days in April: 11.1 days

The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).

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Average snowfall in April
Port Heiden, AK

Average snowfall in April - Port Heiden, AK
  • Average snowfall in April: 2.28"

The month with the highest snowfall is December (5.71").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Port Heiden, AK

Average snowfall days in April - Port Heiden, AK
  • Average snowfall days in April: 9.2 days

The month with the highest number of snowfall days is December (15.1 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Port Heiden, AK

Average daylight in April / Average sunshine in April - Port Heiden, AK
  • Average daylight in April: 14.4h

The month with the longest days is June (Average daylight: 17.8h).
The month with the shortest days is December (Average daylight: 6.8h).

  • Average sunshine in April: 5.4h

The month with the most sunshine is May (Average sunshine: 7.7h).
The month with the least sunshine is December (Average sunshine: 2.4h).

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Average sunshine days in April
Port Heiden, AK

Average sunshine days in April - Port Heiden, AK
  • Average sunshine days in April: 9 days

The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).

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Average UV index in April
Port Heiden, AK

Average UV index in April - Port Heiden, AK
  • Average UV index in April: 2

Months with the highest UV index are May, June, July, August and September (UV index 3).
Months with the lowest UV index are February, March, November and December (UV index 1).

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Average cloud cover in April
Port Heiden, AK

Average cloud cover in April - Port Heiden, AK
  • Average cloud cover in April: 63

The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).

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Average visibility in April
Port Heiden, AK

Average visibility in April - Port Heiden, AK
  • Average visibility in April: 6mi

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

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