May weather forecast and climate
Port Clarence, AK

Weather in May

The last month of the spring, May, is a cold month in Port Clarence, Alaska, with average temperature fluctuating between 33.4°F (0.8°C) and 28°F (-2.2°C).

Temperature

In Port Clarence, the average high-temperature rises, from a freezing cold 23.2°F (-4.9°C) in April, to a cold 33.4°F (0.8°C). The average low-temperature, in Port Clarence, is 28°F (-2.2°C).

Humidity

In May, the average relative humidity in Port Clarence is 89%.

Rainfall

In Port Clarence, in May, it is raining for 8.1 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Port Clarence, there are 86.5 rainfall days, and 14.25" (362mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. In Port Clarence, during May, snow falls for 7.7 days and regularly aggregates up to 1.26" (32mm) of snow. Throughout the year, there are 90 snowfall days, and 20.51" (521mm) of snow is accumulated.

Daylight

In May, the average length of the day is 19.1h.

Sunshine

In May, the average sunshine in Port Clarence is 3.9h.

UV index

The average daily maximum UV index in May is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in May transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Port Clarence?

In May, in Port Clarence, Alaska, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 28°F (-2.2°C).

What is the average humidity in May in Port Clarence?

In May, the average relative humidity is 89%.

How much does it rain in Port Clarence in May?

In Port Clarence, during May, the rain falls for 8.1 days and regularly aggregates up to 0.71" (18mm) of precipitation.

How many days does it snow in May in Port Clarence?

In Port Clarence, during May, snow falls for 7.7 days and regularly aggregates up to 1.26" (32mm) of snow.

What is the average length of the day in May in Port Clarence?

The average length of the day in May in Port Clarence, Alaska, is 19.1h.

How long on average sun shines in May in Port Clarence?

In May, the average sunshine is 3.9h.

How high is the UV index in May in Port Clarence?

In May, the average daily maximum UV index in Port Clarence is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in May
Port Clarence, AK

Average temperature in May - Port Clarence, AK
  • Average high temperature in May: 33.4°F

The warmest month (with the highest average high temperature) is August (50°F).
The month with the lowest average high temperature is January (9°F).

  • Average low temperature in May: 28°F

The month with the highest average low temperature is August (45.3°F).
The coldest months (with the lowest average low temperature) are February and March (1.8°F).

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Average pressure in May
Port Clarence, AK

Average pressure in May - Port Clarence, AK
  • Average pressure in May: 29.96"

The month with the highest atmospheric pressure is May (29.96").
The month with the lowest atmospheric pressure is October (29.72").

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Average wind speed in May
Port Clarence, AK

Average wind speed in May - Port Clarence, AK
  • Average wind speed in May: 12mph

The windiest month (with the highest average wind speed) is December (17.5mph).
The calmest month (with the lowest average wind speed) is May (12mph).

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Average humidity in May
Port Clarence, AK

Average humidity in May - Port Clarence, AK
  • Average humidity in May: 89%

The month with the highest relative humidity is March (93%).
Months with the lowest relative humidity are October and November (79%).

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Average rainfall in May
Port Clarence, AK

Average rainfall in May - Port Clarence, AK
  • Average rainfall in May: 0.71"

The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in May
Port Clarence, AK

Average rainfall days in May - Port Clarence, AK
  • Average rainfall days in May: 8.1 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (1.3 days).

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Average snowfall in May
Port Clarence, AK

Average snowfall in May - Port Clarence, AK
  • Average snowfall in May: 1.26"

The month with the highest snowfall is February (3.62").
Months with the least snowfall are July and August (0").

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Average snowfall days in May
Port Clarence, AK

Average snowfall days in May - Port Clarence, AK
  • Average snowfall days in May: 7.7 days

The month with the highest number of snowfall days is April (13 days).
The month with the least snowfall days is July (0 days).

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Average daylight in May /
Average sunshine in May
Port Clarence, AK

Average daylight in May / Average sunshine in May - Port Clarence, AK
  • Average daylight in May: 19.1h

The month with the longest days is June (Average daylight: 22h).
The month with the shortest days is December (Average daylight: 3.7h).

  • Average sunshine in May: 3.9h

The month with the most sunshine is August (Average sunshine: 5.7h).
The month with the least sunshine is June (Average sunshine: 0.6h).

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Average sunshine days in May
Port Clarence, AK

Average sunshine days in May - Port Clarence, AK
  • Average sunshine days in May: 15.9 days

The month with the most sunshine days is June (18.4 days).
The month with the least sunshine days is October (11.1 days).

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Average UV index in May
Port Clarence, AK

Average UV index in May - Port Clarence, AK
  • Average UV index in May: 2

The month with the highest UV index is July (UV index 3).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).

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Average cloud cover in May
Port Clarence, AK

Average cloud cover in May - Port Clarence, AK
  • Average cloud cover in May: 64

The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is June (Cloud cover 52).

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Average visibility in May
Port Clarence, AK

Average visibility in May - Port Clarence, AK
  • Average visibility in May: 6mi

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

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