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

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 another chilly autumn month, with average temperature varying between 46.9°F (8.3°C) and 37.8°F (3.2°C).

Temperature

In Juneau, the average high-temperature slightly decreases, from a mild 55.8°F (13.2°C) in September, to a chilly 46.9°F (8.3°C). In October, in Juneau, Alaska, the average low-temperature is 37.8°F (3.2°C).

Humidity

The average relative humidity in October is 87.7%.

Rainfall

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

Snowfall

Months with snowfall are January through April, October through December.

Ocean temperature

In Juneau, Alaska, the average seawater temperature is 46.9°F (8.3°C).
Note: 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, the average sunshine in October is 2.1h.

UV index

In Juneau, Alaska, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low threat to health 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:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 October, in Juneau, Alaska, 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?

In Juneau, the average relative humidity in October is 87.7%.

How much does it rain in Juneau in October?

In October, in Juneau, the rain falls for 23.9 days. Throughout October, 8.6" (219.2mm) of precipitation is 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 October, the average ocean temperature in Juneau, Alaska, 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.

How many hours of daylight does Juneau have in October?

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

How many hours of sunshine does Juneau have in October?

The average sunshine in October in Juneau, Alaska, is 2.1h.

How high is the UV index in October in Juneau?

In Juneau, Alaska, the average daily maximum UV index in October is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in October - Juneau, AK
  • Average high temperature in October: 8.3°C

The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is January (0.4°C).

  • Average low temperature in October: 3.2°C

The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is January (-4.6°C).

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: 219.2mm

The wettest month (with the highest rainfall) is September (219.5mm).
The driest month (with the lowest rainfall) is April (74.7mm).

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: 20.3mm

The month with the highest snowfall is January (703.6mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

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: 8.3°C

The best month for swimming (with the highest average sea temperature) is August (11.9°C).
The coldest month (with the lowest average sea temperature) is March (4.7°C).

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).