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

Monthly weather forecast and climate
Unalaska, AK

January, the same as December, is a wintry winter month in Unalaska, Alaska, with average temperature fluctuating between 31.6°F (-0.2°C) and 35.1°F (1.7°C). In Unalaska, Alaska, the average high-temperature in January is relatively the same as in December - a still wintry 35.1°F (1.7°C). Weather in January »

The last month of the winter, February, is another cold month in Unalaska, Alaska, with average temperature fluctuating between 32°F (0°C) and 36°F (2.2°C). In Unalaska, the average high-temperature in February is almost the same as in January - a still wintry 36°F (2.2°C). Weather in February »

March, the first month of the spring, in Unalaska, is still a cold month, with average temperature fluctuating between 30.7°F (-0.7°C) and 34.7°F (1.5°C). With an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 30.7°F (-0.7°C), March is the coldest month. Weather in March »

April, the same as March, is a wintry spring month in Unalaska, Alaska, with average temperature ranging between min 33.4°F (0.8°C) and max 37.4°F (3°C). In April, the average high-temperature is practically the same as in March - a still wintry 37.4°F (3°C). Weather in April »

May, the last month of the spring, in Unalaska, is also a wintry month, with temperature in the range of an average high of 41.4°F (5.2°C) and an average low of 37.9°F (3.3°C). In Unalaska, the average high-temperature is practically the same as in April - a still wintry 41.4°F (5.2°C). Weather in May »

June, the first month of the summer, in Unalaska, is a chilly month, with average temperature varying between 46.4°F (8°C) and 43°F (6.1°C). In Unalaska, Alaska, the average high-temperature is practically the same as in May - a chilly 46.4°F (8°C). Weather in June »

July is a fresh summer month in Unalaska, Alaska, with temperature in the range of an average high of 50.5°F (10.3°C) and an average low of 46.8°F (8.2°C). In July, the average high-temperature is almost the same as in June - a cool 50.5°F (10.3°C). Weather in July »

August, the last month of the summer, in Unalaska, is also a fresh month, with average temperature ranging between min 49.6°F (9.8°C) and max 53.2°F (11.8°C). With an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 49.6°F (9.8°C), August is the warmest month. Weather in August »

The first month of the autumn, September, is still a cool month in Unalaska, Alaska, with average temperature varying between 47.1°F (8.4°C) and 50°F (10°C). In September, the average high-temperature is essentially the same as in August - a still cool 50°F (10°C). Weather in September »

October, the same as September, in Unalaska, Alaska, is a frosty autumn month, with average temperature ranging between max 45°F (7.2°C) and min 42.4°F (5.8°C). In October, the average high-temperature is essentially the same as in September - a chilly 45°F (7.2°C). Weather in October »

November, the last month of the autumn, in Unalaska, is also a wintry month, with temperature in the range of an average low of 37.2°F (2.9°C) and an average high of 40.6°F (4.8°C). In November, the average high-temperature is almost the same as in October - a wintry 40.6°F (4.8°C). Weather in November »

The first month of the winter, December, is also a wintry month in Unalaska, Alaska, with average temperature fluctuating between 37°F (2.8°C) and 33.8°F (1°C). In December, the average high-temperature is essentially the same as in November - a still wintry 37°F (2.8°C). Weather in December »

How many days does it rain in Unalaska?

Throughout the year, there are 198.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.

When does it snow in Unalaska?

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

How much does it snow in Unalaska?

In Unalaska, Alaska, during the entire year, snow falls for 78.3 days, and aggregates up to 30.39" (772mm) of snow.

What is the snowiest month in Unalaska?

The month with the most snowfall in Unalaska is January when snow falls for 14.2 days and typically aggregates up to 6.97" (177mm) of snow.

What are the months with the coldest ocean in Unalaska?

Months with the coldest seawater are February and March, with an average ocean temperature of 38.8°F (3.8°C).

What are the months with the lowest UV index in Unalaska?

February through April and November, with an average maximum UV index of 1, are months with the lowest UV index.

What is the coldest month in Unalaska?

The coldest month is March, with an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 30.7°F (-0.7°C).

When it does not snow in Unalaska?

In Unalaska snow does not fall in June through September.

When are the longest days in Unalaska?

June has the longest days of the year in Unalaska, Alaska, with an average of 17h of daylight.

What month has the most sunshine in Unalaska?

The month with the most sunshine in Unalaska, Alaska, is June, with an average of 5.8h of sunshine.

What is the most humid month in Unalaska?

The most humid month is July, with an average relative humidity of 91%.

What is the driest month in Unalaska?

July is the month with the least rainfall. Rain falls for 19.2 days and accumulates 1.85" (47mm) of precipitation.

When is the highest UV index in Unalaska?

July and August, with an average maximum UV index of 3, are months with the highest UV index.

What is the warmest month in Unalaska?

The warmest month is August, with an average high-temperature of 53.2°F (11.8°C) and an average low-temperature of 49.6°F (9.8°C).

What is the month with the warmest ocean in Unalaska?

The month with the warmest seawater is August, with an average ocean temperature of 50.2°F (10.1°C).

What is the least humid month in Unalaska?

November and December, with an average relative humidity of 80%, are the least humid months in Unalaska, Alaska.

What is the rainiest month in Unalaska?

December is the month with the most rainfall. Rain falls for 15.3 days and accumulates 4.21" (107mm) of precipitation.

What is the month with the shortest days in Unalaska?

The month with the shortest days in Unalaska is December, with an average of 7.5h of daylight.

What is the month with the least sunshine in Unalaska?

The month with the least sunshine in Unalaska, Alaska, is December, with an average of 2h of sunshine.
Average humidity - Unalaska, AK
Average rainfall - Unalaska, AK

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the lowest rainfall) is July (1.85").

Average rainfall days - Unalaska, AK

The month with the highest number of rainy days is October (21.8 days).
The month with the lowest number of rainy days is February (11.1 days).

Average snowfall - Unalaska, AK
Average snowfall days - Unalaska, AK

The month with the highest number of snowfall days is January (14.2 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature - Unalaska, AK

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 / Average sunshine - Unalaska, AK
Average UV index - Unalaska, AK