October weather forecast and climate
Port Heiden, AK

Weather in October

October, like September, is another chilly autumn month in Port Heiden, Alaska, with average temperature varying between 39.9°F (4.4°C) and 44.8°F (7.1°C).

Temperature

In October, the average high-temperature slightly decreases, from a cool 52.3°F (11.3°C) in September, to a frosty 44.8°F (7.1°C). In October, the average low-temperature is 39.9°F (4.4°C).

Humidity

The average relative humidity in Port Heiden is 81%.

Rainfall

October is the month with the most rainfall. Rain falls for 17.4 days and accumulates 2.17" (55mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Port Heiden, in October, snow falls for 3.9 days, with typically accumulated 0.91" (23mm) of snow. In Port Heiden, Alaska, during the entire year, snow falls for 83.4 days, and aggregates up to 23.94" (608mm) of snow.

Daylight

In October, the average length of the day in Port Heiden is 10.3h.

Sunshine

In Port Heiden, the average sunshine is 4.5h.

UV index

The average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 October in Port Heiden?

The average high-temperature, in October, in Port Heiden, Alaska, is 44.8°F (7.1°C), while the average low-temperature is 39.9°F (4.4°C).

What is the average humidity in October in Port Heiden?

In Port Heiden, the average relative humidity in October is 81%.

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

In Port Heiden, Alaska, during October, the rain falls for 17.4 days and regularly aggregates up to 2.17" (55mm) of precipitation.

What is the wettest month in Port Heiden?

October is the month with the most rainfall in Port Heiden, Alaska. Rain falls for 17.4 days and accumulates 2.17" (55mm) of precipitation.

How many days does it snow in October in Port Heiden?

In Port Heiden, during October, snow falls for 3.9 days and regularly aggregates up to 0.91" (23mm) of snow.

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

The average length of the day in October in Port Heiden is 10.3h.

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

The average sunshine in October in Port Heiden, Alaska, is 4.5h.

What is the UV index intensity in October in Port Heiden?

In October, the average daily maximum UV index in Port Heiden, Alaska, is 2. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.

Average temperature in October
Port Heiden, AK

Average temperature in October - Port Heiden, AK
  • Average high temperature in October: 44.8°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 October: 39.9°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 October
Port Heiden, AK

Average pressure in October - Port Heiden, AK
  • Average pressure in October: 29.61"

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 October
Port Heiden, AK

Average wind speed in October - Port Heiden, AK
  • Average wind speed in October: 13.7mph

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 October
Port Heiden, AK

Average humidity in October - Port Heiden, AK
  • Average humidity in October: 81%

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 October
Port Heiden, AK

Average rainfall in October - Port Heiden, AK
  • Average rainfall in October: 2.17"

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 October
Port Heiden, AK

Average rainfall days in October - Port Heiden, AK
  • Average rainfall days in October: 17.4 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 October
Port Heiden, AK

Average snowfall in October - Port Heiden, AK
  • Average snowfall in October: 0.91"

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 October
Port Heiden, AK

Average snowfall days in October - Port Heiden, AK
  • Average snowfall days in October: 3.9 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 October /
Average sunshine in October
Port Heiden, AK

Average daylight in October / Average sunshine in October - Port Heiden, AK
  • Average daylight in October: 10.3h

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 October: 4.5h

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 October
Port Heiden, AK

Average sunshine days in October - Port Heiden, AK
  • Average sunshine days in October: 7.7 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 October
Port Heiden, AK

Average UV index in October - Port Heiden, AK
  • Average UV index in October: 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 October
Port Heiden, AK

Average cloud cover in October - Port Heiden, AK
  • Average cloud cover in October: 64

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 October
Port Heiden, AK

Average visibility in October - Port Heiden, AK
  • Average visibility in October: 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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