May weather forecast
Port Chilkoot, AK

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Weather in May

May, the last month of the spring in Port Chilkoot, is a frosty month, with an average temperature ranging between min 33.8°F (1°C) and max 46.2°F (7.9°C).

Temperature

The transition to May introduces an increase in the average high-temperature, shifting from an icy 35.2°F (1.8°C) in April to a chilly 46.2°F (7.9°C). An average minimum temperature of 33.8°F (1°C) is recorded during the month of May.

Humidity

With an average relative humidity of 78%, May is the least humid month in Port Chilkoot.

Rainfall

In May, the rain falls for 17.7 days. Throughout May, 2.28" (58mm) of precipitation is accumulated. Throughout the year, in Port Chilkoot, there are 200.4 rainfall days, and 48.03" (1220mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, Port Chilkoot aggregates 0.08" (2mm) of snow. In Port Chilkoot, during the entire year, snow falls for 83.4 days and aggregates up to 86.57" (2199mm) of snow.

Daylight

In Port Chilkoot, the average length of the day in May is 17h and 2min.
On the first day of the month, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of May, in Port Chilkoot, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.

Sunshine

In May, the average sunshine in Port Chilkoot is 8.9h.

UV index

In May, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 in May interprets into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What are the temperatures in Port Chilkoot in May?

An average high-temperature, in May, in Port Chilkoot, is 46.2°F (7.9°C) and the average low-temperature is 33.8°F (1°C).

What is the least humid month in Port Chilkoot?

The least humid month is May, with an average relative humidity of 78%.

What is the average humidity in May in Port Chilkoot?

In Port Chilkoot, Alaska, the average relative humidity in May is 78%.

How many days does it rain in May in Port Chilkoot?

In May, in Port Chilkoot, the rain falls for 17.7 days. Throughout May, 2.28" (58mm) of precipitation is accumulated.

What is the last month it snows in Port Chilkoot?

May is the last month it regularly snows in Port Chilkoot. During 0.5 snowfall days, in May, Port Chilkoot aggregates 0.08" (2mm) of snow.

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

In Port Chilkoot, Alaska, the average day length in May is 17h and 2min.

When is the sunrise / sunset in May in Port Chilkoot?

On the first day of May, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.

How many hours of sunshine does Port Chilkoot have in May?

The average sunshine duration in May is 8.9h.

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

In May, the average daily maximum UV index in Port Chilkoot, Alaska, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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 May
Port Chilkoot, AK

Average temperature in May - Port Chilkoot, AK
  • Average high temperature in May: 46.2°F

The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).

  • Average low temperature in May: 33.8°F

The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).

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Average pressure in May
Port Chilkoot, AK

Average pressure in May - Port Chilkoot, AK
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).

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Average wind speed in May
Port Chilkoot, AK

Average wind speed in May - Port Chilkoot, AK
  • Average wind speed in May: 4.7mph

The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).

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Average humidity in May
Port Chilkoot, AK

Average humidity in May - Port Chilkoot, AK
  • Average humidity in May: 78%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).

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Average rainfall in May
Port Chilkoot, AK

Average rainfall in May - Port Chilkoot, AK
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").

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Average rainfall days in May
Port Chilkoot, AK

Average rainfall days in May - Port Chilkoot, AK
  • Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).

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Average snowfall in May
Port Chilkoot, AK

Average snowfall in May - Port Chilkoot, AK
  • Average snowfall in May: 0.08"

The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Port Chilkoot, AK

Average snowfall days in May - Port Chilkoot, AK
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Port Chilkoot, AK
  • Average daylight in May: 17h and 0min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).

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Average sunshine days in May
Port Chilkoot, AK

Average sunshine days in May - Port Chilkoot, AK
  • Average sunshine days in May: 10 days

The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).

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Average UV index in May
Port Chilkoot, AK

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

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).

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Average cloud cover in May
Port Chilkoot, AK

Average cloud cover in May - Port Chilkoot, AK
  • Average cloud cover in May: 47

The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).

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Average visibility in May
Port Chilkoot, AK

Average visibility in May - Port Chilkoot, AK
  • Average visibility in May: 5mi

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

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Port Chilkoot, Alaska, USA

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