Climate and monthly weather forecast
Whittier, AK

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The climate of Whittier

The climate in Whittier, Alaska falls under the Dfc zone according to Köppen climate classification. This signifies a subarctic climate, with severe winters, no dry season, and cool summers. Positioned in Alaska, the geographical location undoubtedly plays a major role in creating this cold-bound weather pattern.

Over the course of a year, the temperature fluctuates between a high of 10.8°F (-11.8°C) in January to a high of 55°F (12.8°C) in July. Lower temperatures cruise from a minimum of 10.8°F (-11.8°C) in January to a staggering low of 44.1°F (6.7°C) in July. Precipitation levels follow suit in maintaining higher patterns throughout the year, as rainfall climbs from 7.13" (181mm) in February to a peak of 12.13" (308mm) in October.

It is noteworthy the stronghold of humidity, which remains above the 80 percentile year-round, peaking at 92% in the months of March and April. Among the other significant weather-related phenomena, snowfall attracts considerable attention. The white blanket covers Whittier from a measure of 30.55" (776mm) in January, reaching its zenith at 46.38" (1178mm) in December.

The best time to visit Whittier

Visiting Whittier requires close scrutiny of weather conditions, in order to make the most of the journey. A suggested time would be between June and August. The temperatures during these months inch towards their highest, swinging from 41.4°F (5.2°C) to 55°F (12.8°C). Precipitation levels also tend to be comparatively lower, dropping down to 3.9" (99mm) in June. The levels of sunshine also increase during these months, peaking at 8 hours of daylight in June.

The worst time to visit Whittier

Venturing towards Whittier from December to February might pose certain challenges in terms of weather. These months experience severe subarctic conditions, with temperatures dropping to 13.6°F (-10.2°C) in December. Snowfall can reach a high of 46.38" (1178mm) in December, making it the most snow-covered part of the year.

Spring weather in Whittier

Springtime in Whittier, encompassing the months from March to May, slowly seizes the land away from the frosty grip of winter. During these months, temperatures rise from 26.4°F (-3.1°C) in March to a mild 32.5°F (0.3°C) in May, meanwhile, precipitation inches down from 7.13" (181mm) in March to 5.75" (146mm) in April.

Summer weather in Whittier

The months from June to August constitute the summer season in Whittier. The mercury hits a peak of 55°F (12.8°C) in July, marking the warmest period of the year. But these temperatures are by no means extreme, fitting well within the cool-summer classification of this subarctic region. The rainfall levels downtrend to 4.88" (124mm) in July making summer months comparably drier.

Autumn weather in Whittier

Autumn, extending from September to November, witnesses a departure of the relatively moderate summer temperatures. The mercury drops from a high of 44.4°F (6.9°C) in September to a cooler high of 25.5°F (-3.6°C) in November. Rainfall levels rise to a high of 12.13" (308mm) in October, lining the city in a damp fall canvas.

Winter weather in Whittier

Winter in Whittier is characterised by severely cold temperatures and snow-laden landscapes. Spanning from December to February, winter sees a plunge of temperatures to a frigid 13.6°F (-10.2°C) in December. Snowfall reaches a mesmerizing high of 46.38" (1178mm) in December, transforming this Alaskan city into a winter wonderland.

Weather in January

January in Whittier, Alaska brings on harsh and freezing conditions, reinforced by considerable cloud coverage and low sunshine hours that further encourage the chill. When compared to December, the initial month of the new year sees less snowfall but increased rainfall, encompassing more days with precipitation. Weather in January »

Weather in February

February’s weather builds upon January’s cold canvas, but with a slight uptick in average temperatures and a reduction in the number of rainfall days. Despite higher temperatures, February outdoes January in snowfall, astonished by the accumulation of 37.76" (959mm), making the month a compelling time for winter sports and activities. Weather in February »

Weather in March

Compared to its snowy predecessor, March in Whittier shifts towards mildness with warmer temperatures and less harsh weather. The month stands out with an increase in the duration of daylight. Meanwhile, a slight drop in snowfall from 37.76" (959mm) in February to 32.76" (832mm) in March signals the end of the heavy winter. Weather in March »

Weather in April

April sees a considerable leap from March in regard to warmer temperatures across Whittier. This welcome warmth pairs with a decrease in snowfall, a relief for the snow-shoveling citizens. The weather dances between the final chilled breezes of winter and the first gentle brushes of spring, leading to a beautiful amalgamation of the two seasons. Weather in April »

Weather in May

May in Whittier brings a significant improvement in climate conditions and visibility. As temperatures continue to escalate, the outdoor thermometer starts to display much friendlier readings than those in April. The month is characteristic of longer daylight hours, which dramatically increase to 17.4 hours from 14.7 hours in April, adding a luminous charm to the city. Weather in May »

Weather in June

June introduces Whittier to early summer, with temperatures and daylight hours continuing on an upward trend since May. The long-awaited summer sunshine pokes through the clouds more frequently, affording residents bountiful daylight. Weather in June »

Weather in July

July in Whittier is enveloped by intense warmer climatic conditions, with a swell in humidity and a slight drop in rain from June. As the peak of summer, July distinctly outscores June with the highest temperature of the year at 55°F (12.8°C). Weather in July »

Weather in August

August continues the warmth from July, albeit with slightly lower temperatures and increased rainfall. Even as summer reaches towards its tail-end, the sun remains vigorous, retaining the essence of long days and enjoyable warmth. Weather in August »

Weather in September

As the bridge between August's lingering summer and the upcoming winter, September brings noticeable change to Whittier's weather patterns. A considerable drop in sunshine hours and temperatures indicates the end of the bright and warm period. Weather in September »

Weather in October

In October, Whittier starts to give in to the cold winds of winter. The temperatures drastically plummet compared to September, signifying a clear transition to a colder season. Complemented by the maximum average cloud cover of 66% in the month, the city adopts a greyer and colder look. Weather in October »

Weather in November

November is the harbinger of winter in Whittier, with falling temperatures and the return of significant snowfall. The city undergoes a profound transformation as snug falls give way to hard frosts. Sunlight suffers a stark dip, plunging the city into darkness for more extended periods. Weather in November »

Weather in December

December in Whittier witnesses the full force of winter, with plunging temperatures and rigorous snowfall. The month is shrouded in a cold, dark ambiance, due to a dramatic decrease in daylight hours to a mere 5.8 hours. Contrasting against the gloom, snow starts accumulating rapidly, leading to a considerable snowfall of 46.38" (1178mm) throughout the month. Weather in December »

Frequently asked questions

What month is the coldest?

Whittier experiences its lowest temperatures in January, with an average peak of 20.1°F (-6.6°C) and a low of 10.8°F (-11.8°C).

How many days does it rain?

In Whittier, during the entire year, the rain falls for 199.9 days and collects up to 94.88" (2410mm) of precipitation.

When does it snow?

January through May, September through December are months with snowfall.

How much does it snow?

Throughout the year, there are 111.4 snowfall days, and 193.66" (4919mm) of snow is accumulated.

When is the lowest UV index?

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

What are the most humid months?

March and April, with an average relative humidity of 92%, are most humid months.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from AKDT to AKST.

What is the least humid month?

With an average relative humidity of 82%, June is the least humid month.

What is the driest month?

The month with the least rainfall is June, when the rain falls for 20.3 days and typically collects 3.9" (99mm) of precipitation.

When it does not snow?

In Whittier, snow does not fall in June through August.

When are the longest days?

June has the longest days of the year in Whittier, with an average of 19h and 0min of daylight.

What month has the most sunshine?

With an average of 8h of sunshine, June has the most sunshine of the year in Whittier.

What is the month with the highest UV index?

The months with the highest UV index in Whittier are June and July, with an average maximum UV index of 3.

What month is the hottest?

July, with average temperatures reaching a high of 55°F (12.8°C) and a low of 44.1°F (6.7°C), is the warmest month in Whittier.

What is the wettest month in Whittier?

The month with the most rainfall is October, when the rain falls for 21.6 days and typically aggregates up to 12.13" (308mm) of precipitation.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 21.9 days and accumulates 46.38" (1178mm) of snow.

What is the month with the shortest days?

With an average of 5h and 48min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

With an average of 2h of sunshine, December has the least sunshine of the year.

Average temperature
Whittier, AK

Average temperature - Whittier, AK

The warmest month (with the highest average high temperature) is July (55°F).
The month with the lowest average high temperature is January (20.1°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 (10.8°F).

Average pressure
Whittier, AK

Average pressure - Whittier, AK

The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).

Average wind speed
Whittier, AK

Average wind speed - Whittier, AK

The windiest month (with the highest average wind speed) is November (6.1mph).
The calmest month (with the lowest average wind speed) is July (4.1mph).

Average humidity
Whittier, AK

Average humidity - Whittier, AK

The months with the highest relative humidity are March and April (92%).
The month with the lowest relative humidity is June (82%).

Average rainfall
Whittier, AK

Average rainfall - Whittier, AK

The wettest month (with the highest rainfall) is October (12.13").
The driest month (with the least rainfall) is June (3.9").

Average rainfall days
Whittier, AK

Average rainfall days - Whittier, AK

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is February (7.7 days).

Average snowfall
Whittier, AK

Average snowfall - Whittier, AK

The month with the highest snowfall is December (46.38").
The months with the least snowfall are June, July and August (0").

Average snowfall days
Whittier, AK

Average snowfall days - Whittier, AK

The month with the highest number of snowfall days is December (21.9 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Whittier, AK

Average daylight / Average sunshine - Whittier, AK

The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).

The month with the most sunshine is June (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 2h).

Average sunshine days
Whittier, AK

Average sunshine days - Whittier, AK

The month with the most sunshine days is January (9.3 days).
The month with the least sunshine days is April (5.6 days).

Average UV index
Whittier, AK

Average UV index - Whittier, AK

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

Average visibility
Whittier, AK

Average visibility - Whittier, AK

The months with the highest visibility are May, June and July (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October, November and December (4mi).

Whittier, Alaska, USA

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