Climate and monthly weather forecast
Thorne Bay, AK

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The climate of Thorne Bay

Thorne Bay, situated on Prince of Wales Island in Alaska, subscribes to a Marine west coast, warm summer climate or Cfb as per Köppen climate classification. This classification reflects a climate marked by its moderate to high rainfall, cool summers, and mild winters commonly associated with coastal weather patterns influenced by the nearby sea.

Observations over the year indicate that Thorne Bay remains relatively cool throughout. High temperatures range from 37°F (2.8°C) in the first two months of the year to an annual high of 60.4°F (15.8°C) in July and August, while low temperatures move between 30.2°F (-1°C) in February and 49.8°F (9.9°C) in August. Relative humidity stays primarily high throughout the year, fluctuating between a margin of 84-90%, signifying the moist maritime influence.

Rainfall dominates the annual weather pattern in Thorne Bay, with monthly averages ranging from a low of 2.83" (72mm) in May to a peak of 8.03" (204mm) in November. Correspondingly, the number of rainy days ranges from 14.8 in February to 22.5 in November, suggesting the prevalence of rain throughout the majority of the year. Peculiar to Thorne Bay is a period from December to March marked by significant snowfall that peaks at 10.35" (263mm) in March, accompanied by the maximum number of snowy days (10.3) in the same month.

The best time to visit Thorne Bay

Assessing across the various meteorological parameters, the most pleasant time to visit Thorne Bay can be determined to be between late spring and early summer, specifically from May to July. This period combines the maximum daylight hours (ranging from 16.3h in May to 17.4h in June) with the warmest and driest conditions of the year. Additionally, these months also witness the highest sunshine hours, particularly May with 5.7h and July with 5.2h. The UV index, although generally low throughout the year, reaches an annual peak of 4 during July and August.

The worst time to visit Thorne Bay

Comparatively, the least favorable period to visit Thorne Bay would be towards the end and start of the year, specifically November to January. These months are marked by the highest rainfall (from 7.48" (190mm) in December to 8.03" (204mm) in November), the lowest temperature (from 36.5°F (2.5°C) in December to 37°F (2.8°C) in January), and the lowest daylight hours (from 7.1h in December to 7.8h in January). The UV index is also minimal during this time, recorded at a constant 1, indicative of the lack of sunshine.

Spring weather in Thorne Bay

Spring weather in Thorne Bay, from March to May, is characterized by a gradual decrease in rainfall and progressively warming temperatures. The highest average temperature during this period is 53.1°F (11.7°C) in May, a noticeable rise from 40.8°F (4.9°C) in March. Rainfall decreases from 5.12" (130mm) in March to the annual low of 2.83" (72mm) in May.

Summer weather in Thorne Bay

Summer, from June to August, is the season of longest daylight hours in Thorne Bay, peaking at 17.4h in June. It also has the highest average temperatures, reaching an annual peak of 60.4°F (15.8°C) in both July and August. Rainfall remains moderate in summer with a range of 3.5" (89mm) in June to 5.24" (133mm) in August.

Autumn weather in Thorne Bay

Autumn in Thorne Bay, spanning September to November, is distinctly marked by a steady increase in rainfall, culminating in the year's highest monthly average of 8.03" (204mm) in November. The average temperature sees a steady decrease, from 56.5°F (13.6°C) in September to 41°F (5°C) in November.

Winter weather in Thorne Bay

Winter in Thorne Bay, which extends from December to February, is characterized by the lowest temperatures of the year, averaging between 37°F (2.8°C) in January and 37.2°F (2.9°C) in February. Significant snowfall is also seen, reaching its maximum in February with 8.43" (214mm) and lowest daylight hours are observed, standing at 7.8h in January. Rainfall is high during this period, ranging from 7.48" (190mm) in December to 7.95" (202mm) in January.

Weather in January

January is considered the coldest month in Thorne Bay, Alaska with temperatures hovering between a chilling low of 31.8°F (-0.1°C) and a high of 37°F (2.8°C). Marked by a high relative humidity of 90%, the month experiences dense clouds covering 74% of the sky. Weather in January »

Weather in February

In February, weather conditions in Thorne Bay, Alaska moderate slightly from January, with the month's lowest and highest temperatures being marginally warmer at 30.2°F (-1°C) and 37.2°F (2.9°C), respectively. A slightly lower cloud cover of 63% is seen this month, allowing for more sunlight hours during the day. Weather in February »

Weather in March

March, in Thorne Bay, Alaska sees a noticeable increase in temperature, the mercury fluctuating from 31.8°F (-0.1°C) to 40.8°F (4.9°C), as well as an upsurge in daylight hours to 11.9. However, despite the added sunlight, the city continues to experience high levels of snowfall, recording 10.35" (263mm) during this period. Weather in March »

Weather in April

With average temperatures rising between 35.8°F (2.1°C) and 45.7°F (7.6°C), April in Thorne Bay, Alaska brings thawing landscapes and melting snow, as the spring season fully sets in. The change in season also signals a decrease in the city's snowfall, with only 1.1" (28mm) recorded in this month. Weather in April »

Weather in May

In Thorne Bay, Alaska, May marks the advent of milder weather, with temperatures ranging from a mild 41°F (5°C) to a warmer 53.1°F (11.7°C). The minimal snowfall typically witnessed in April all but vanishes, and rainfall also substantially decreases to 2.83" (72mm). Weather in May »

Weather in June

June signals the start of summer in Thorne Bay, Alaska, and comes with a warm temperature range of 44.6°F (7°C) to 56.5°F (13.6°C). The transition to summer denotes an escalation in humidity to 86% and a lengthening of daylight hours to 17.4. Weather in June »

Weather in July

In Thorne Bay, Alaska, July is recorded as the warmest month of the year, with the mercury rising anywhere from 48.9°F (9.4°C) to a pleasant 60.4°F (15.8°C). However, the city experiences increased rainfall amounts to 3.78" (96mm) compared to the preceding months. Weather in July »

Weather in August

August brings cooler weather to Thorne Bay, Alaska, with a slight drop in temperatures to between 49.8°F (9.9°C) and 60.4°F (15.8°C). Despite the temperatures remaining similar to July, rainfall sees an increase, hitting a substantial 5.24" (133mm) over the course of the month. Weather in August »

Weather in September

September in Thorne Bay, Alaska features a further temperature drop, with it ranging from a cool 46.9°F (8.3°C) to a high of 56.5°F (13.6°C). Coinciding with the onset of the fall season, the rainfall increases to 6.02" (153mm), making it the city's wettest month. Weather in September »

Weather in October

October brings about an air of winter in Thorne Bay, Alaska, as temperatures dip further between 41.2°F (5.1°C) and 48.6°F (9.2°C). Meanwhile, the rainfall heightens to reach a considerable 7.28" (185mm) throughout the month. Weather in October »

Weather in November

November marks the start of the winter season in Thorne Bay, Alaska, featuring colder temperatures lying between 36°F (2.2°C) and 41°F (5°C). Snowfall reappears with a significant measure of 2.48" (63mm) and the city begins to take on a blanket of white. Weather in November »

Weather in December

December in Thorne Bay, Alaska is a winter wonderland, with temperatures dropping to a low of 31.3°F (-0.4°C) and reaching a chilly high of 36.5°F (2.5°C). Characterized by a substantial snowfall of 3.5" (89mm), it transforms the city into a snowy retreat. Weather in December »
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Frequently asked questions

What is the most humid month in Thorne Bay?

With an average relative humidity of 90%, January is the most humid month.

How many days does it rain in Thorne Bay?

In Thorne Bay, during the entire year, the rain falls for 231.7 days and collects up to 67.83" (1723mm) of precipitation.

When does it snow in Thorne Bay?

Months with snowfall are January through April, November and December.

How much does it snow in Thorne Bay?

In Thorne Bay, during the entire year, snow falls for 37.2 days and aggregates up to 34.61" (879mm) of snow.

What is the month with the least sunshine in Thorne Bay?

January has the least sunshine of the year in Thorne Bay, Alaska, with an average of 2.6h of sunshine.

What is the month with the lowest UV index in Thorne Bay?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Thorne Bay, Alaska.

What is the least humid month in Thorne Bay?

March and May, with an average relative humidity of 84%, are the least humid months.

What is the snowiest month in Thorne Bay?

March is the month with the most snowfall. Snow falls for 10.3 days and accumulates 10.35" (263mm) of snow.

When is Daylight Saving Time (DST) in Thorne Bay?

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 driest month in Thorne Bay?

The month with the least rainfall in Thorne Bay is May, when the rain falls for 18.1 days and typically collects 2.83" (72mm) of precipitation.

When it does not snow in Thorne Bay?

May through October are months without snowfall.

What is the month with the most sunshine in Thorne Bay?

The months with the most sunshine in Thorne Bay, Alaska, are May and September, with an average of 5.7h of sunshine.

When are the longest days in Thorne Bay?

June has the longest days of the year in Thorne Bay, Alaska, with an average of 17h and 24min of daylight.

What is the warmest month in Thorne Bay?

Thorne Bay's temperature peaks during July and August, with an average high-temperature of 60.4°F (15.8°C).

When is the highest UV index in Thorne Bay?

July and August, with an average maximum UV index of 4, are months with the highest UV index in Thorne Bay, Alaska.

What is the wettest month in Thorne Bay?

The month with the most rainfall in Thorne Bay, Alaska, is November, when the rain falls for 22.5 days and typically aggregates up to 8.03" (204mm) of precipitation.

What are the coldest months in Thorne Bay?

In Thorne Bay, Alaska, the average lowest temperatures are observed in December, with a high of 36.5°F (2.5°C) and a low of 31.3°F (-0.4°C).

What is the month with the shortest days in Thorne Bay?

December has the shortest days of the year in Thorne Bay, Alaska, with an average of 7h and 6min of daylight.

Average temperature
Thorne Bay, AK

Average temperature - Thorne Bay, AK

The warmest months (with the highest average high temperature) are July and August (60.4°F).
The month with the lowest average high temperature is December (36.5°F).

The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is February (30.2°F).

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Average pressure
Thorne Bay, AK

Average pressure - Thorne Bay, AK

The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).

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Average wind speed
Thorne Bay, AK

Average wind speed - Thorne Bay, AK

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

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Average humidity
Thorne Bay, AK

Average humidity - Thorne Bay, AK

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are March and May (84%).

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Average rainfall
Thorne Bay, AK

Average rainfall - Thorne Bay, AK

The wettest month (with the highest rainfall) is November (8.03").
The driest month (with the least rainfall) is May (2.83").

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Average rainfall days
Thorne Bay, AK

Average rainfall days - Thorne Bay, AK

The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).

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Average snowfall
Thorne Bay, AK

Average snowfall - Thorne Bay, AK

The month with the highest snowfall is March (10.35").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Thorne Bay, AK

Average snowfall days - Thorne Bay, AK

The month with the highest number of snowfall days is March (10.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Thorne Bay, AK

Average daylight / Average sunshine - Thorne Bay, AK

The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 6min).

The months with the most sunshine are May and September (Average sunshine: 5h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

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Average sunshine days
Thorne Bay, AK

Average sunshine days - Thorne Bay, AK

The month with the most sunshine days is July (11.1 days).
The month with the least sunshine days is November (5.3 days).

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Average UV index
Thorne Bay, AK

Average UV index - Thorne Bay, AK

The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average visibility
Thorne Bay, AK

Average visibility - Thorne Bay, AK

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

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Thorne Bay, Alaska, USA

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