October weather forecast
Girdwood, AK

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Weather in October

Cooler weather takes hold in October as Girdwood transitions into full-fledged autumn. The month compares closely to November with similar temperature lows, daylight hours, and observable snowfall. The congruity in climatological conditions makes it challenging to discern October weather from that of November, one notable exception being the increased rainfall in November.

Temperature

October involves a decrease in temperature, down from a frosty 45.5°F (7.5°C) in September to an icy 35.1°F (1.7°C). Girdwood documents a consistent average low-temperature of 27.3°F (-2.6°C) at night during October.

Humidity

In Girdwood, the average relative humidity in October is 87%.

Rainfall

The month with the most rainfall is October, when the rain falls for 16.6 days and typically aggregates up to 3.03" (77mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Girdwood, during October, snow falls for 3.5 days and regularly aggregates up to 1.89" (48mm) of snow. Throughout the year, there are 92.4 snowfall days, and 43.31" (1100mm) of snow is accumulated.

Daylight

In October, the average length of the day is 10h and 1min.
On the first day of the month, sunrise is at 8:05 am and sunset at 7:26 pm. On the last day of October, sunrise is at 9:23 am and sunset at 5:57 pm AKDT.

Sunshine

The average sunshine in October is 3.8h.

UV index

The months with the lowest UV index in Girdwood, Alaska, are January through March, October through December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 1 in October leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Frequently asked questions

How cold is October?

Girdwood in October has an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 27.3°F (-2.6°C).

What is the average humidity in October?

In Girdwood, the average relative humidity in October is 87%.

What is the wettest month?

The month with the most rainfall is October, when the rain falls for 16.6 days and typically aggregates up to 3.03" (77mm) of precipitation.

How much does it rain in October?

In Girdwood, in October, during 16.6 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

How many days does it snow in October?

In Girdwood, in October, snow falls for 3.5 days, with typically accumulated 1.89" (48mm) of snow.

What is the average length of the day in October?

In October, the average day length in Girdwood is 10h and 1min.

When are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 8:05 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 9:23 am and sunset at 5:57 pm AKDT.

How long on average sun shines in October?

In Girdwood, Alaska, the average sunshine duration in October is 3.8h.

What is the month with the lowest UV index?

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

What is the UV index reading in October?

The average daily maximum UV index in October is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Girdwood, AK

Average temperature in October - Girdwood, AK
  • Average high temperature in October: 35.1°F

The warmest month (with the highest average high temperature) is July (56.8°F).
The month with the lowest average high temperature is January (18°F).

  • Average low temperature in October: 27.3°F

The month with the highest average low temperature is July (44.1°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

Average pressure in October
Girdwood, AK

Average pressure in October - Girdwood, AK
  • Average pressure in October: 29.7"Hg

The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is November (29.66"Hg).

Average wind speed in October
Girdwood, AK

Average wind speed in October - Girdwood, AK
  • Average wind speed in October: 5.7mph

The windiest months (with the highest average wind speed) are November and December (5.9mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

Average humidity in October
Girdwood, AK

Average humidity in October - Girdwood, AK
  • Average humidity in October: 87%

The months with the highest relative humidity are March and December (92%).
The month with the lowest relative humidity is June (79%).

Average rainfall in October
Girdwood, AK

Average rainfall in October - Girdwood, AK
  • Average rainfall in October: 3.03"

The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in October
Girdwood, AK

Average rainfall days in October - Girdwood, AK
  • Average rainfall days in October: 16.6 days

The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is February (6 days).

Average snowfall in October
Girdwood, AK

Average snowfall in October - Girdwood, AK
  • Average snowfall in October: 1.89"

The month with the highest snowfall is December (9.57").
The months with the least snowfall are June, July and August (0").

Average snowfall days in October
Girdwood, AK

Average snowfall days in October - Girdwood, AK
  • Average snowfall days in October: 3.5 days

The month with the highest number of snowfall days is December (17.6 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in October / Average sunshine in October - Girdwood, AK
  • Average daylight in October: 10h and 0min

The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).

  • Average sunshine in October: 3h and 5min

The month with the most sunshine is May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).

Average sunshine days in October
Girdwood, AK

Average sunshine days in October - Girdwood, AK
  • Average sunshine days in October: 11.1 days

The month with the most sunshine days is January (14.2 days).
The month with the least sunshine days is August (8 days).

Average UV index in October
Girdwood, AK

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

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

Average cloud cover in October
Girdwood, AK

Average cloud cover in October - Girdwood, AK
  • Average cloud cover in October: 65

The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is May (Cloud cover 55).

Average visibility in October
Girdwood, AK

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

The month with the highest visibility is June (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (4mi).

Girdwood, Alaska, USA

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