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

Monthly weather forecast and climate
Ketchikan, AK

Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
January, the same as December, is a wintry winter month in Ketchikan, Alaska, with temperature in the range of an average high of 38.5°F (3.6°C) and an average low of 28.8°F (-1.8°C). The coldest month is January, with an average high-temperature of 38.5°F (3.6°C) and an average low-temperature of 28.8°F (-1.8°C). Weather in January »
February, the last month of the winter, in Ketchikan, is also a wintry month, with average temperature ranging between min 31.3°F (-0.4°C) and max 41.4°F (5.2°C). In Ketchikan, the average high-temperature in February is essentially the same as in January - a still wintry 41.4°F (5.2°C). Weather in February »

The first month of the spring, March, is a frosty month in Ketchikan, Alaska, with average temperature ranging between min 33.1°F (0.6°C) and max 43.5°F (6.4°C). In March, the average high-temperature is practically the same as in February - a frosty 43.5°F (6.4°C). Weather in March »

April, the same as March, in Ketchikan, Alaska, is another chilly spring month, with average temperature ranging between max 49.3°F (9.6°C) and min 36.7°F (2.6°C). In April, the average high-temperature slightly increases, from 43.5°F (6.4°C) in March, to a still chilly 49.3°F (9.6°C). Weather in April »

May, the last month of the spring, in Ketchikan, is a fresh month, with temperature in the range of an average high of 55°F (12.8°C) and an average low of 41.7°F (5.4°C). In Ketchikan, the average high-temperature slightly increases, from a chilly 49.3°F (9.6°C) in April, to a cool 55°F (12.8°C). Weather in May »

June, the first month of the summer, in Ketchikan, is a mild month, with average temperature fluctuating between 60.4°F (15.8°C) and 47.1°F (8.4°C). In June, the average high-temperature marginally rises, from a fresh 55°F (12.8°C) in May, to a moderate 60.4°F (15.8°C). Weather in June »

July is a comfortable summer month in Ketchikan, Alaska, with average temperature ranging between max 64°F (17.8°C) and min 51.4°F (10.8°C). In Ketchikan, the average high-temperature is relatively the same as in June - a comfortable 64°F (17.8°C). Weather in July »

The last month of the summer, August, is also an enjoyable month in Ketchikan, Alaska, with average temperature varying between 52.2°F (11.2°C) and 64.6°F (18.1°C). The warmest month is August, with an average high-temperature of 64.6°F (18.1°C) and an average low-temperature of 52.2°F (11.2°C). Weather in August »

The first month of the autumn, September, is also a moderate month in Ketchikan, Alaska, with average temperature ranging between min 47.1°F (8.4°C) and max 59.2°F (15.1°C). In September, the average high-temperature slightly decreases, from an enjoyable 64.6°F (18.1°C) in August, to a moderate 59.2°F (15.1°C). Weather in September »

October, the same as September, is a cool autumn month in Ketchikan, Alaska, with average temperature ranging between min 40.6°F (4.8°C) and max 50.7°F (10.4°C). In Ketchikan, the average high-temperature slightly decreases, from a moderate 59.2°F (15.1°C) in September, to a cool 50.7°F (10.4°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Ketchikan, Alaska, with average temperature ranging between max 43.5°F (6.4°C) and min 34.2°F (1.2°C). In November, the average high-temperature marginally drops, from a cool 50.7°F (10.4°C) in October, to a chilly 43.5°F (6.4°C). Weather in November »

The first month of the winter, December, is also a wintry month in Ketchikan, Alaska, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 30.9°F (-0.6°C). In December, the average high-temperature is practically the same as in November - a wintry 39.9°F (4.4°C). Weather in December »

What is the coldest month in Ketchikan?

January is the coldest month in Ketchikan, with an average high-temperature of 38.5°F (3.6°C) and an average low-temperature of 28.8°F (-1.8°C).

How much does it rain in Ketchikan?

In Ketchikan, Alaska, during the entire year, the rain falls for 229 days and collects up to 153.2" (3892.3mm) of precipitation.

When does it snow in Ketchikan?

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

How much does it snow in Ketchikan?

Throughout the year, 39.5" (1003.2mm) of snow is accumulated.

When does it snow the most in Ketchikan?

The month with the most snowfall is January when 13.3" (337.8mm) of snow is typically aggregated.

What is the month with the lowest UV index in Ketchikan?

Months with the lowest UV index are January and December, with an average maximum UV index of 0.

What is the month with the coldest ocean in Ketchikan?

March is the month with the coldest seawater in Ketchikan, Alaska, with an average ocean temperature of 42.4°F (5.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What month has the most sunshine in Ketchikan?

May has the most sunshine of the year in Ketchikan, Alaska, with an average of 6h of sunshine.

What is the driest month in Ketchikan?

June is the month with the least rainfall in Ketchikan, Alaska. Rain falls for 16 days and accumulates 7.4" (187.2mm) of precipitation.

When are the longest days in Ketchikan?

June has the longest days of the year in Ketchikan, with an average of 17.4h of daylight.

When is the highest UV index in Ketchikan?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the warmest month in Ketchikan?

August is the warmest month, with an average high-temperature of 64.6°F (18.1°C) and an average low-temperature of 52.2°F (11.2°C).

When is the ocean warmest in Ketchikan?

The month with the warmest seawater in Ketchikan, Alaska, is August, with an average ocean temperature of 55.9°F (13.3°C). Swimming in 55.9°F (13.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the rainiest month in Ketchikan?

October is the month with the most rainfall. Rain falls for 24 days and accumulates 22.2" (563.1mm) of precipitation.

What is the month with the shortest days in Ketchikan?

With an average of 7.2h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Ketchikan?

With an average of 1h of sunshine, December has the least sunshine of the year in Ketchikan.
Average temperature - Ketchikan, AK
Average rainfall - Ketchikan, AK

The wettest month (with the highest rainfall) is October (22.2").
Driest months (with the lowest rainfall) are June and July (7.4").

Average rainfall days - Ketchikan, AK
Average snowfall - Ketchikan, AK
Average sea temperature - Ketchikan, AK

The best month for swimming (with the highest average sea temperature) is August (55.9°F).
The coldest month (with the lowest average sea temperature) is March (42.5°F).

Average daylight / Average sunshine - Ketchikan, AK