October weather forecast
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

Weather in October

October, like September, in Juneau, Alaska, is a wintry autumn month, with an average temperature fluctuating between 39°F (3.9°C) and 32.9°F (0.5°C).

Temperature

In Juneau, the average high-temperature in October decreases from a frosty 48.2°F (9°C) in September to a wintry 39°F (3.9°C). In October, in Juneau, the average low-temperature is 32.9°F (0.5°C).

Humidity

In October, the average relative humidity in Juneau is 88%.

Rainfall

The month with the most rainfall in Juneau is October, when the rain falls for 20 days and typically aggregates up to 9.88" (251mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows in Juneau. Throughout October, in the average 5.8 snowfall days, it receives 9.29" (236mm) of snow. In Juneau, Alaska, during the entire year, snow falls for 126.6 days and aggregates up to 290.12" (7369mm) of snow.

Ocean temperature

In Juneau, Alaska, the average water temperature is 46.9°F (8.3°C).
Note: Swimming in 46.9°F (8.3°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

In Juneau, the average length of the day in October is 10h and 13min.
On the first day of the month, sunrise is at 7:03 am and sunset at 6:31 pm. On the last day of October, sunrise is at 8:11 am and sunset at 5:10 pm AKDT.

Sunshine

The average sunshine in October in Juneau, Alaska, is 3.1h.

UV index

January, April, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 in October transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in October in Juneau?

In October, the average relative humidity in Juneau is 88%.

What is the wettest month in Juneau?

October is the month with the most rainfall. Rain falls for 20 days and accumulates 9.88" (251mm) of precipitation.

How many days does it rain in October in Juneau?

In Juneau, in October, during 20 rainfall days, 9.88" (251mm) of precipitation is typically accumulated.

When does it start snowing in Juneau?

October is the first month it typically snows. Throughout October, in the average 5.8 snowfall days, it receives 9.29" (236mm) of snow.

What is the water temperature in October in Juneau?

In Juneau, Alaska, 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.

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

In Juneau, Alaska, the average day length in October is 10h and 13min.

What time are sunrise and sunset in October in Juneau?

In October, on the first day of the month, sunrise is at 7:03 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:10 pm AKDT.

How many hours of sunshine does Juneau have in October?

In October, the average sunshine duration in Juneau, Alaska, is 3.1h.

When is the lowest UV index in Juneau?

The months with the lowest UV index are January, April, October through December, with an average maximum UV index of 1.

What is the UV index intensity in October in Juneau?

In Juneau, the average daily maximum UV index in October is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Juneau, AK

Average temperature in October - Juneau, AK
  • Average high temperature in October: 39°F

The warmest month (with the highest average high temperature) is July (55.8°F).
The months with the lowest average high temperature are January and December (25.7°F).

  • Average low temperature in October: 32.9°F

The month with the highest average low temperature is July (45.1°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).

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Average pressure in October
Juneau, AK

Average pressure in October - Juneau, AK
  • Average pressure in October: 29.86"Hg

The month with the highest atmospheric pressure is July (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed in October
Juneau, AK

Average wind speed in October - Juneau, AK
  • Average wind speed in October: 5.6mph

The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest months (with the lowest average wind speed) are June and July (3.7mph).

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Average humidity in October
Juneau, AK

Average humidity in October - Juneau, AK
  • Average humidity in October: 88%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (86%).

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Average rainfall in October
Juneau, AK

Average rainfall in October - Juneau, AK
  • Average rainfall in October: 9.88"

The wettest month (with the highest rainfall) is October (9.88").
The driest month (with the least rainfall) is May (4.13").

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Average rainfall days in October
Juneau, AK

Average rainfall days in October - Juneau, AK
  • Average rainfall days in October: 20 days

The month with the highest number of rainy days is September (21.9 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in October
Juneau, AK

Average snowfall in October - Juneau, AK
  • Average snowfall in October: 9.29"

The month with the highest snowfall is December (62.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Juneau, AK

Average snowfall days in October - Juneau, AK
  • Average snowfall days in October: 5.8 days

The month with the highest number of snowfall days is January (21.9 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
Juneau, AK

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).

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

Average daylight in October / Average sunshine in October - Juneau, AK
  • Average daylight in October: 10h and 13min

The month with the longest days is June (Average daylight: 18h and 9min).
The month with the shortest days is December (Average daylight: 6h and 31min).

  • Average sunshine in October: 3h and 6min

The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is November (Average sunshine: 2h and 36min).

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Average sunshine days in October
Juneau, AK

Average sunshine days in October - Juneau, AK
  • Average sunshine days in October: 7 days

The month with the most sunshine days is May (10 days).
The month with the least sunshine days is November (6.1 days).

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Average UV index in October
Juneau, AK

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

The months with the highest UV index are May and July (UV index 3).
The months with the lowest UV index are January, April, October, November and December (UV index 1).

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Average cloud cover in October
Juneau, AK

Average cloud cover in October - Juneau, AK
  • Average cloud cover in October: 69

The months with the most cloud cover are January and November (Cloud cover 72).
The month with the least cloud cover is May (Cloud cover 61).

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Average visibility in October
Juneau, AK

Average visibility in October - Juneau, AK
  • Average visibility in October: 4mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).

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