October weather forecast and climate
Juneau, AK

Blooming fireweed in Juneau, Alaska, with snowy mountain peaks in the distance
Blooming fireweed in Juneau, Alaska, with snowy mountain peaks in the distance
October, the same as September, in Juneau, Alaska, is a chilly autumn month, with temperature in the range of an average low of 37.8°F (3.2°C) and an average high of 46.9°F (8.3°C).

Temperature

In Juneau, the average high-temperature is 46.9°F (8.3°C), and the average low-temperature is 37.8°F (3.2°C).

Humidity

The average relative humidity in Juneau, Alaska, is 87.7%.

Rainfall

In Juneau, during 23.9 rainfall days, 8.6" (219.2mm) of precipitation is typically accumulated. In Juneau, during the entire year, the rain falls for 229.8 days and collects up to 62.3" (1581.6mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Juneau.

Ocean temperature

In Juneau, the average seawater temperature in October is 46.9°F (8.3°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.

Daylight

In October, the average length of the day in Juneau is 10.2h.

Sunshine

In Juneau, Alaska, the average sunshine is 2.1h.

UV index

In Juneau, the average daily maximum UV index in October is 1. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Juneau?

In Juneau, in October, the average high-temperature is 46.9°F (8.3°C), and the average low-temperature is 37.8°F (3.2°C).

What is the average humidity in October in Juneau?

The average relative humidity in October in Juneau, Alaska, is 87.7%.

How much does it rain in Juneau in October?

In Juneau, Alaska, in October, during 23.9 rainfall days, 8.6" (219.2mm) of precipitation is typically accumulated.

When does it start to snow in Juneau?

October is the first month it typically snows in Juneau, Alaska. Throughout October, in the average 0.6 snowfall days, it receives 0.8" (20.3mm) of snow.

What is the ocean temperature in October in Juneau?

In Juneau, the average seawater temperature in October is 46.9°F (8.3°C). Swimming in 46.9°F (8.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Juneau have in October?

In October, the average length of the day in Juneau, Alaska, is 10.2h.

How long on average sun shines in October in Juneau?

In October, the average sunshine in Juneau is 2.1h.

What is the UV index reading in October in Juneau?

In Juneau, Alaska, the average daily maximum UV index in October is 1. A UV Index of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV radiation.
Average temperature in October - Juneau, AK
  • Average high temperature in October: 47°F

The warmest month (with the highest average high temperature) is July (63.9°F).
The month with the lowest average high temperature is January (32.8°F).

  • Average low temperature in October: 37.8°F

The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average humidity in October - Juneau, AK
  • Average humidity in October: 87.7%

The month with the highest relative humidity is September (87.9%).
The month with the lowest relative humidity is May (76.3%).

Average rainfall in October - Juneau, AK
  • Average rainfall in October: 8.6"

Wettest months (with the highest rainfall) are September and October (8.6").
The driest month (with the lowest rainfall) is April (2.9").

Average rainfall days in October - Juneau, AK
  • Average rainfall days in October: 23.9 days

The month with the highest number of rainy days is October (23.9 days).
The month with the lowest number of rainy days is June (15.8 days).

Average snowfall in October - Juneau, AK
  • Average snowfall in October: 0.8"

The month with the highest snowfall is January (27.7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in October - Juneau, AK
  • Average snowfall days in October: 0.6 days

The month with the highest number of snowfall days is January (10.6 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in October - Juneau, AK
  • Average sea temperature in October: 47°F

The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is March (40.3°F).

Average daylight in October / Average sunshine in October - Juneau, AK
  • Average daylight in October: 10.2h

The month with the longest days is June (Average daylight: 18.2h).
The month with shortest days is December (Average daylight: 6.5h).

  • Average sunshine in October: 2.1h

The month with most sunshine is May (Average sunshine: 7.5h).
The month with least sunshine is December (Average sunshine: 1.3h).

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

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

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