October weather forecastUnalaska, AK
October
Weather in October
October speaks volumes about the shift towards colder weather in Unalaska with a further decrease in temperature. This month rings in the colder half of the year with an increase in rainfall to 3.62" (92mm), coupled with the reemergence of snowfall, albeit merely 0.12" (3mm). The moisture content in the air rises and the wind speeds pick up, contributing to the chill in the air. Daylight hours dwindle, corralled by progressive winter. The sea continues its cooling trend, falling in sync with the dropping air temperatures.Temperature
The initiation of October in Unalaska records an average high-temperature of a frosty 45°F (7.2°C), displaying a near consistency with the previous month. Unalaska's nights throughout October are marked by an average low temperature of 42.4°F (5.8°C), a minor drop from the day's high.Humidity
In Unalaska, the average relative humidity in October is 82%.Rainfall
In Unalaska, in October, during 21.8 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, there are 198.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.7 snowfall days, it receives 0.12" (3mm) of snow. In Unalaska, during the entire year, snow falls for 78.3 days and aggregates up to 30.39" (772mm) of snow.Ocean temperature
In October, the average ocean temperature is 46°F (7.8°C).Note: Without suitable protection, venturing into 46°F (7.8°C) waters cooler than 50°F (10°C) can lead to pronounced cold shock and rapid breaths.
Daylight
The average length of the day in October is 10h and 31min.On the first day of October, sunrise is at 9:09 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 10:06 am and sunset at 7:33 pm AKDT.
Sunshine
The average sunshine in October is 4.5h.UV index
In Unalaska, the average daily maximum UV index in October is 2. 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 maximum UV index of 2 during October leads to these instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Unalaska, AK
- Average high temperature in October: 45°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).
- Average low temperature in October: 42.4°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).
Average pressure in October
Unalaska, AK
- Average pressure in October: 29.63"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).
Average wind speed in October
Unalaska, AK
- Average wind speed in October: 15.2mph
The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in October
Unalaska, AK
- Average humidity in October: 82%
The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).
Average rainfall in October
Unalaska, AK
- Average rainfall in October: 3.62"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in October
Unalaska, AK
- Average rainfall days in October: 21.8 days
The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in October
Unalaska, AK
- Average snowfall in October: 0.12"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Unalaska, AK
- Average snowfall days in October: 0.7 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Unalaska, AK
- Average sea temperature in October: 46°F
The best month for swimming (with the highest average sea temperature) is August (50.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in October /
Average sunshine in October
Unalaska, AK
- Average daylight in October: 10h and 30min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in October: 4h and 30min
The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in October
Unalaska, AK
- Average sunshine days in October: 5.4 days
The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in October
Unalaska, AK
- Average UV index in October: 2
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).
Average cloud cover in October
Unalaska, AK
- Average cloud cover in October: 66
The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).
Average visibility in October
Unalaska, AK
- Average visibility in October: 6mi
The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).
