Climate and monthly weather forecastThorne Bay, AK
Climate and monthly weather forecast
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 »Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With an average relative humidity of 90%, January is the most humid month.
Throughout the year, there are 231.7 rainfall days, and 67.83" (1723mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
In Thorne Bay, during the entire year, snow falls for 37.2 days and aggregates up to 34.61" (879mm) of snow.
With an average of 2.6h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
March and May, with an average relative humidity of 84%, are the least humid months.
The month with the most snowfall is March, when snow falls for 10.3 days and typically aggregates up to 10.35" (263mm) of snow.
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.
The month with the least rainfall is May, when the rain falls for 18.1 days and typically collects 2.83" (72mm) of precipitation.
May through October are months without snowfall in Thorne Bay.
May and September, with an average of 5.7h of sunshine, are months with the most sunshine.
With an average of 17h and 24min of daylight, June has the longest days of the year.
The warmest period, with an average high-temperature of 60.4°F (15.8°C), falls in July and August.
July and August, with an average maximum UV index of 4, are months with the highest UV index.
The month with the most rainfall is November, when the rain falls for 22.5 days and typically aggregates up to 8.03" (204mm) of precipitation.
With average high temperatures of 36.5°F (2.5°C) and lows of 31.3°F (-0.4°C), December is the coldest month.
The month with the shortest days is December, with an average of 7h and 6min of daylight.
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).
Average pressure
Thorne Bay, AK
- Average pressure in January:
29.8"Hg - Average pressure in February:
29.91"Hg - Average pressure in March:
29.82"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.06"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.85"Hg - Average pressure in November:
29.77"Hg - Average pressure in December:
29.83"Hg
The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).
Average wind speed
Thorne Bay, AK
- Average wind speed in January:
8.5mph - Average wind speed in February:
7.4mph - Average wind speed in March:
7.1mph - Average wind speed in April:
6.7mph - Average wind speed in May:
5.4mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
5.1mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7mph - Average wind speed in November:
7.9mph - Average wind speed in December:
7.6mph
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).
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%).
Average rainfall
Thorne Bay, AK
- Average rainfall in January:
7.95" - Average rainfall in February:
5.31" - Average rainfall in March:
5.12" - Average rainfall in April:
5.28" - Average rainfall in May:
2.83" - Average rainfall in June:
3.5"
- Average rainfall in July:
3.78" - Average rainfall in August:
5.24" - Average rainfall in September:
6.02" - Average rainfall in October:
7.28" - Average rainfall in November:
8.03" - Average rainfall in December:
7.48"
The wettest month (with the highest rainfall) is November (8.03").
The driest month (with the least rainfall) is May (2.83").
Average rainfall days
Thorne Bay, AK
- Average rainfall days in January:
20.1 days - Average rainfall days in February:
14.8 days - Average rainfall days in March:
17.4 days - Average rainfall days in April:
21.1 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
18.8 days - Average rainfall days in August:
19.3 days - Average rainfall days in September:
19.4 days - Average rainfall days in October:
21.3 days - Average rainfall days in November:
22.5 days - Average rainfall days in December:
19.5 days
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).
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").
Average snowfall days
Thorne Bay, AK
- Average snowfall days in January:
7.2 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
10.3 days - Average snowfall days in April:
2.4 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
6.2 days
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).
Average daylight / Average sunshine
Thorne Bay, AK
- Average daylight in January:
7h and 48min - Average daylight in February:
9h and 42min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 12min - Average daylight in May:
16h and 18min - Average daylight in June:
17h and 24min
- Average daylight in July:
16h and 48min - Average daylight in August:
15h and 0min - Average daylight in September:
12h and 42min - Average daylight in October:
10h and 24min - Average daylight in November:
8h and 18min - Average daylight in December:
7h and 6min
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).
- Average sunshine in January:
2h and 36min - Average sunshine in February:
3h and 18min - Average sunshine in March:
4h and 6min - Average sunshine in April:
4h and 54min - Average sunshine in May:
5h and 42min - Average sunshine in June:
5h and 0min
- Average sunshine in July:
5h and 12min - Average sunshine in August:
5h and 36min - Average sunshine in September:
5h and 42min - Average sunshine in October:
3h and 36min - Average sunshine in November:
2h and 54min - Average sunshine in December:
3h and 0min
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).
Average sunshine days
Thorne Bay, AK
- Average sunshine days in January:
7.2 days - Average sunshine days in February:
9.5 days - Average sunshine days in March:
7.6 days - Average sunshine days in April:
7.5 days - Average sunshine days in May:
11 days - Average sunshine days in June:
8.6 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
10.4 days - Average sunshine days in September:
9.8 days - Average sunshine days in October:
8.2 days - Average sunshine days in November:
5.3 days - Average sunshine days in December:
7.9 days
The month with the most sunshine days is July (11.1 days).
The month with the least sunshine days is November (5.3 days).
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).
Average cloud cover
Thorne Bay, AK
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is September (Cloud cover 62).
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).
