Ketchikan
Alaska, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Ketchikan, AK

Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
October, the same as September, is a cool autumn month in Ketchikan, Alaska, with average temperature fluctuating between 40.6°F (4.8°C) and 50.7°F (10.4°C).

Temperature

In Ketchikan, the average high-temperature marginally drops, from a moderate 59.2°F (15.1°C) in September, to a fresh 50.7°F (10.4°C). In Ketchikan, in October, the average low-temperature is 40.6°F (4.8°C).

Rainfall

October is the month with the most rainfall. Rain falls for 24 days and accumulates 22.2" (563.1mm) of precipitation.

Snowfall

Months with snowfall in Ketchikan are January through May, October through December. October is the first month it typically snows in Ketchikan. Throughout October, Ketchikan receives 0.1" (2.5mm) of snow. In Ketchikan, during the entire year, snow aggregates up to 39.5" (1003.2mm).

Ocean temperature

In October, the average ocean temperature in Ketchikan, Alaska, is 50.5°F (10.3°C).
Note: Swimming in 50.5°F (10.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in Ketchikan, Alaska, is 10.4h.

Sunshine

In October, the average sunshine in Ketchikan is 2h.

UV index

The average daily maximum UV index in October is 1. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In October, the average maximum UV index of 1 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in October in Ketchikan?

The average high-temperature, in October, in Ketchikan, is 50.7°F (10.4°C), while the average low-temperature is 40.6°F (4.8°C).

How many days does it rain in October in Ketchikan?

In Ketchikan, Alaska, in October, it is raining for 24 days, with typically 22.2" (563.1mm) of accumulated precipitation.

What is the wettest month in Ketchikan?

The month with the most rainfall in Ketchikan is October when the rain falls for 24 days and typically aggregates up to 22.2" (563.1mm) of precipitation.

When does it start snowing in Ketchikan?

October is the first month it typically snows. Throughout October, Ketchikan receives 0.1" (2.5mm) of snow.

How cold is the water in October in Ketchikan?

In October, the average ocean temperature in Ketchikan, Alaska, is 50.5°F (10.3°C). Swimming in 50.5°F (10.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in October in Ketchikan?

In October, the average length of the day in Ketchikan is 10.4h.

How long on average sun shines in October in Ketchikan?

In Ketchikan, the average sunshine in October is 2h.

How high is the UV index in October in Ketchikan?

The average daily maximum UV index in October is 1. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in October - Ketchikan, AK
  • Average high temperature in October: 50.8°F

The warmest month (with the highest average high temperature) is August (64.5°F).
The month with the lowest average high temperature is January (38.4°F).

  • Average low temperature in October: 40.7°F

The month with the highest average low temperature is August (52.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average rainfall in October - Ketchikan, AK
  • Average rainfall in October: 22.2"

The wettest month (with the highest rainfall) is October (22.2").
Driest months (with the lowest rainfall) are June and July (7.4").

Average rainfall days in October - Ketchikan, AK
  • Average rainfall days in October: 24 days

The month with the highest number of rainy days is October (24 days).
The month with the lowest number of rainy days is July (15 days).

Average snowfall in October - Ketchikan, AK
  • Average snowfall in October: 0.1"

The month with the highest snowfall is January (13.3").
Months with the lowest snowfall are June, July, August and September (0").

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).

Average daylight in October / Average sunshine in October - Ketchikan, AK
  • Average daylight in October: 10.4h

The month with the longest days is June (Average daylight: 17.4h).
The month with shortest days is December (Average daylight: 7.2h).

  • Average sunshine in October: 2h

The month with most sunshine is May (Average sunshine: 6h).
The month with least sunshine is December (Average sunshine: 1h).

Average UV index in October - Ketchikan, AK
  • Average UV index in October: 1

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).