October weather forecast
Ketchikan, AK

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Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska

Weather in October

October in Ketchikan ushers in the fall season with cooler temperatures, frequent rain, and shorter days. Reading from 42.1°F (5.6°C) at the lower edge to 48.2°F (9°C) upper end, temperatures signify incoming wintry chills. October's rainfall is hefty, amassing approximately 8.19" (208mm) showing the cloud-laden harbinger of winter. Despite reduced daylight of 10.4 hours, Ketchikan in October delivers a unique blend of autumn charm and scenic fall foliage.

Temperature

October ushers in a minute temperature change, with average high-temperatures reducing from September's moderate 56.3°F (13.5°C) to a frosty 48.2°F (9°C). During October, Ketchikan's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a wintry 42.1°F (5.6°C).

Humidity

The average relative humidity in October in Ketchikan, Alaska, is 85%.

Rainfall

In Ketchikan, Alaska, in October, it is raining for 20.3 days, with typically 8.19" (208mm) of accumulated precipitation. Throughout the year, in Ketchikan, Alaska, there are 221.8 rainfall days, and 80" (2032mm) of precipitation is accumulated.

Snowfall

In Ketchikan, snow does not fall in June through October.

Ocean temperature

In October, the average ocean temperature is 50.5°F (10.3°C).
Note: Navigating the 50.5°F (10.3°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

The average length of the day in October is 10h and 25min.
On the first day of October, sunrise is at 6:51 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:09 pm AKDT.

Sunshine

The average sunshine in October is 4.2h.

UV index

In October, the average daily maximum UV index in Ketchikan is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 2 in October translates into these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the usual temperature for Ketchikan in October?

Ketchikan in October has an average high-temperature of 48.2°F (9°C) and an average low-temperature of 42.1°F (5.6°C).

What is the average humidity in October in Ketchikan?

In Ketchikan, Alaska, the average relative humidity in October is 85%.

How many days does it rain in October in Ketchikan?

In Ketchikan, Alaska, during October, the rain falls for 20.3 days and regularly aggregates up to 8.19" (208mm) of precipitation.

When it does not snow in Ketchikan?

June through October are months without snowfall in Ketchikan.

Does it snow in Ketchikan in October?

In Ketchikan, Alaska, in October, it doesn't snow. In November, it regularly snows.

What is the ocean temperature in October in Ketchikan?

In Ketchikan, Alaska, the average seawater temperature in October is 50.5°F (10.3°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Ketchikan have in October?

In Ketchikan, the average day length in October is 10h and 25min.

When are sunrise and sunset in October in Ketchikan?

On the first day of October in Ketchikan, sunrise is at 6:51 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:09 pm AKDT.

How many hours of sunshine does Ketchikan have in October?

In Ketchikan, Alaska, the average sunshine duration in October is 4.2h.

What is the UV index intensity in October in Ketchikan?

The average daily maximum UV index in October in Ketchikan, Alaska, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Ketchikan, AK

Average temperature in October - Ketchikan, AK
  • Average high temperature in October: 48.2°F

The warmest months (with the highest average high temperature) are July and August (60.8°F).
The month with the lowest average high temperature is December (35.8°F).

  • Average low temperature in October: 42.1°F

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is February (30.6°F).

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Average pressure in October
Ketchikan, AK

Average pressure in October - Ketchikan, AK
  • Average pressure in October: 29.88"Hg

The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed in October
Ketchikan, AK

Average wind speed in October - Ketchikan, AK
  • Average wind speed in October: 7.1mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in October
Ketchikan, AK

Average humidity in October - Ketchikan, AK
  • Average humidity in October: 85%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (82%).

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Average rainfall in October
Ketchikan, AK

Average rainfall in October - Ketchikan, AK
  • Average rainfall in October: 8.19"

The wettest month (with the highest rainfall) is January (9.69").
The driest month (with the least rainfall) is May (3.46").

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Average rainfall days in October
Ketchikan, AK

Average rainfall days in October - Ketchikan, AK
  • Average rainfall days in October: 20.3 days

The month with the highest number of rainy days is November (21.4 days).
The month with the least rainy days is February (14.2 days).

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Average snowfall in October
Ketchikan, AK

Average snowfall in October - Ketchikan, AK
  • Average snowfall in October: 0"

The month with the highest snowfall is February (13.11").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in October
Ketchikan, AK

Average snowfall days in October - Ketchikan, AK
  • Average snowfall days in October: 0.1 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 sea temperature in October
Ketchikan, AK

Average sea temperature in October - Ketchikan, AK
  • Average sea temperature in October: 50.5°F

The best month for swimming (with the highest average sea temperature) is August (55.9°F).
The coldest month (with the lowest average sea temperature) is March (42.5°F).

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Average daylight in October /
Average sunshine in October
Ketchikan, AK

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

The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 12min).

  • Average sunshine in October: 4h and 1min

The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in October
Ketchikan, AK

Average sunshine days in October - Ketchikan, AK
  • Average sunshine days in October: 9.3 days

The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is November (5.6 days).

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Average UV index in October
Ketchikan, AK

Average UV index in October - Ketchikan, 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 January, November and December (UV index 1).

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Average cloud cover in October
Ketchikan, AK

Average cloud cover in October - Ketchikan, AK
  • Average cloud cover in October: 60

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 55).

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Average visibility in October
Ketchikan, AK

Average visibility in October - Ketchikan, 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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Ketchikan, Alaska, USA

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