October weather forecast
Saint John Harbor, AK

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Weather in October

October, the same as September, in Saint John Harbor, Alaska, is another chilly autumn month, with an average temperature fluctuating between 46°F (7.8°C) and 39.7°F (4.3°C).

Temperature

With the commencement of October, Saint John Harbor records a moderate temperature decline, with the average high easing from September's cool 54.3°F (12.4°C) to a chilly 46°F (7.8°C). A minimal decline in temperature from daytime highs is anticipated throughout the October nights, averaging a wintry 39.7°F (4.3°C).

Humidity

In October, the average relative humidity is 82%.

Rainfall

October is the month with the most rainfall in Saint John Harbor. Rain falls for 20.1 days and accumulates 6.3" (160mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows in Saint John Harbor. Throughout October, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, in Saint John Harbor, there are 47.5 snowfall days, and 58.23" (1479mm) of snow is accumulated.

Daylight

In October, the average length of the day in Saint John Harbor is 10h and 21min.
On the first day of October in Saint John Harbor, Alaska, sunrise is at 6:56 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:10 pm AKDT.

Sunshine

In October, the average sunshine in Saint John Harbor, Alaska, is 4.2h.

UV index

In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 2 in October translates into these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are October temperatures in Saint John Harbor?

In October, the average high-temperature and low-temperature in Saint John Harbor are 46°F (7.8°C) and 39.7°F (4.3°C) respectively.

What is the average humidity in October in Saint John Harbor?

The average relative humidity in October in Saint John Harbor, Alaska, is 82%.

What is the wettest month in Saint John Harbor?

October is the month with the most rainfall in Saint John Harbor, Alaska. Rain falls for 20.1 days and accumulates 6.3" (160mm) of precipitation.

How many days does it rain in October in Saint John Harbor?

In Saint John Harbor, in October, during 20.1 rainfall days, 6.3" (160mm) of precipitation is typically accumulated.

When does it start snowing in Saint John Harbor?

October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow.

How many hours of daylight does Saint John Harbor have in October?

In October, the average day length in Saint John Harbor is 10h and 21min.

When are sunrise and sunset in October in Saint John Harbor?

On the first day of October, sunrise is at 6:56 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:10 pm AKDT.

How long on average sun shines in October in Saint John Harbor?

The average sunshine duration in October is 4.2h.

What is the UV index intensity in October in Saint John Harbor?

In Saint John Harbor, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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 October
Saint John Harbor, AK

Average temperature in October - Saint John Harbor, AK
  • Average high temperature in October: 46°F

The warmest month (with the highest average high temperature) is July (59.7°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in October: 39.7°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).

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Average pressure in October
Saint John Harbor, AK

Average pressure in October - Saint John Harbor, AK
  • Average pressure in October: 29.87"Hg

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed in October
Saint John Harbor, AK

Average wind speed in October - Saint John Harbor, AK
  • Average wind speed in October: 6.7mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (3.9mph).

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Average humidity in October
Saint John Harbor, AK

Average humidity in October - Saint John Harbor, AK
  • Average humidity in October: 82%

The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).

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Average rainfall in October
Saint John Harbor, AK

Average rainfall in October - Saint John Harbor, AK
  • Average rainfall in October: 6.3"

The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").

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Average rainfall days in October
Saint John Harbor, AK

Average rainfall days in October - Saint John Harbor, AK
  • Average rainfall days in October: 20.1 days

The month with the highest number of rainy days is October (20.1 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall in October
Saint John Harbor, AK

Average snowfall in October - Saint John Harbor, AK
  • Average snowfall in October: 0.31"

The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Saint John Harbor, AK

Average snowfall days in October - Saint John Harbor, AK
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Saint John Harbor, AK

Average daylight in October / Average sunshine in October - Saint John Harbor, AK
  • Average daylight in October: 10h and 2min

The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).

  • Average sunshine in October: 4h and 1min

The month with the most sunshine is May (Average sunshine: 7h and 24min).
The months with the least sunshine are January and November (Average sunshine: 3h and 24min).

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Average sunshine days in October
Saint John Harbor, AK

Average sunshine days in October - Saint John Harbor, AK
  • Average sunshine days in October: 10.1 days

The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).

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Average UV index in October
Saint John Harbor, AK

Average UV index in October - Saint John Harbor, AK
  • Average UV index in October: 2

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in October
Saint John Harbor, AK

Average cloud cover in October - Saint John Harbor, AK
  • Average cloud cover in October: 58

The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are February and May (Cloud cover 54).

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Average visibility in October
Saint John Harbor, AK

Average visibility in October - Saint John Harbor, AK
  • Average visibility in October: 6mi

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

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Saint John Harbor, Alaska, USA

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