October weather - Autumn 2024

Weather in October
Frequently asked questions
Average temperature in October
Average pressure in October
Average wind speed in October
Average humidity in October
Average rainfall in October
Average rainfall days in October
Average snowfall in October
Average snowfall days in October
Average sea temperature in October
Average daylight in October
Average sunshine in October
Average sunshine days in October
Average UV index in October
Average cloud cover in October
Average visibility in October

Blooming fireweed in Juneau, Alaska with snowy mountain peaks in the distance

Weather in October

October is the definitive arrival of fall in Juneau, characterized by lower temperatures and a significant increase in rainfall. Damp and chilly, it brings the first sign of the approaching winter as snow begins to fall, registering an average of 9.29" (236mm). The sea's temperature continues to decrease, signaling the end of the swimming season. Despite the changing weather, the blend of rich fall colors and lingering daylight hours makes October a visually striking month in Juneau.

Temperature

Juneau in October undergoes a mild reduction in the average high-temperature, shifting from September's frosty 48.2°F (9°C) to an icy 39°F (3.9°C). Juneau reports an average low temperature of 32.9°F (0.5°C) in October, a minor decrease from the day's highs.

Humidity

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

Rainfall

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

Snowfall

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

Ocean temperature

In October, the average ocean temperature is 46.9°F (8.3°C).
Note: With the appropriate swimsuit, one can swim in 46.9°F (8.3°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.

Daylight

In October, the average length of the day is 10h and 13min.
On the first day of October, sunrise is at 7:04 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:09 pm AKDT.

Sunshine

In Juneau, the average sunshine in October 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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 1 in October translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during October?

In Juneau, in October, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 32.9°F (0.5°C).

What is the average humidity in October?

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

What is the rainiest month?

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

How many days does it rain in October?

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

When does it start to snow?

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, the average seawater temperature in October is 46.9°F (8.3°C). 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.

What is the average length of the day in October?

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

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 7:04 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:09 pm AKDT.

How many hours of sunshine does Juneau have in October?

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

What are the months with the lowest UV index?

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

What is the UV index reading in October?

The average daily maximum UV index in October is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S October N D

Sep

October

Nov

Average high temperature

48.2°F 9°C

39°F 3.9°C

29.8°F -1.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph 8.5km/h

5.8mph 9.3km/h

6.6mph 10.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

5.8

19.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

7.5

6.1

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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").

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).

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").

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).

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: 10h and 1min

The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).

Average sunshine in October: 3h and 1min

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).

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).

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).

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).

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).

October weather forecast
Juneau, AK

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