Climate and monthly weather forecast
Ketchikan, AK

Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska

Weather in January

January, the same as December, is a wintry winter month in Ketchikan, Alaska, with an average temperature fluctuating between 31.6°F (-0.2°C) and 36.5°F (2.5°C). In Ketchikan, the average high-temperature in January is essentially the same as in December - a still wintry 36.5°F (2.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Ketchikan, Alaska, with temperature in the range of an average high of 37°F (2.8°C) and an average low of 30.6°F (-0.8°C). In February, the average high-temperature is relatively the same as in January - a still wintry 37°F (2.8°C). Weather in February »

Weather in March

March, the first month of the spring in Ketchikan, is still a cold month, with an average temperature varying between 40.3°F (4.6°C) and 32.4°F (0.2°C). In March, the average high-temperature is almost the same as in February - a still wintry 40.3°F (4.6°C). Weather in March »

Weather in April

April is a frosty spring month in Ketchikan, Alaska, with an average temperature ranging between max 46°F (7.8°C) and min 37.2°F (2.9°C). In Ketchikan, the average high-temperature in April slightly increases from a wintry 40.3°F (4.6°C) in March to a chilly 46°F (7.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a cool month in Ketchikan, Alaska, with an average temperature ranging between min 43.5°F (6.4°C) and max 53.4°F (11.9°C). In Ketchikan, the average high-temperature in May slightly increases from a chilly 46°F (7.8°C) in April to a fresh 53.4°F (11.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderate month in Ketchikan, Alaska, with an average temperature varying between 56.7°F (13.7°C) and 47.3°F (8.5°C). In June, the average high-temperature is essentially the same as in May - a mild 56.7°F (13.7°C). Weather in June »

Weather in July

July is an enjoyable summer month in Ketchikan, Alaska, with temperature in the range of an average low of 51.4°F (10.8°C) and an average high of 60.8°F (16°C). July and August, with an average high-temperature of 60.8°F (16°C), are the warmest months. Weather in July »

Weather in August

The last month of the summer, August, is another comfortable month in Ketchikan, Alaska, with an average temperature ranging between min 52°F (11.1°C) and max 60.8°F (16°C). July and August, with an average high-temperature of 60.8°F (16°C), are the warmest months. Weather in August »

Weather in September

September, the first month of the autumn in Ketchikan, is still a mild month, with an average temperature ranging between min 48.7°F (9.3°C) and max 56.3°F (13.5°C). In September, the average high-temperature is essentially the same as in August - a moderate 56.3°F (13.5°C). Weather in September »

Weather in October

October, like September, is another chilly autumn month in Ketchikan, Alaska, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 48.2°F (9°C). In October, the average high-temperature slightly decreases from a mild 56.3°F (13.5°C) in September to a chilly 48.2°F (9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Ketchikan, Alaska, with an average temperature varying between 40.8°F (4.9°C) and 36.1°F (2.3°C). In November, the average high-temperature marginally drops from a frosty 48.2°F (9°C) in October to a cold 40.8°F (4.9°C). Weather in November »

Weather in December

December, the first month of the winter in Ketchikan, is still a cold month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 35.8°F (2.1°C). The coldest month is December, with an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 31.5°F (-0.3°C). Weather in December »
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FAQ

What is the most humid month in Ketchikan?

The most humid month in Ketchikan, Alaska, is January, with an average relative humidity of 88%.

What is the wettest month in Ketchikan?

January is the month with the most rainfall in Ketchikan. Rain falls for 19.2 days and accumulates 9.69" (246mm) of precipitation.

How much does it rain in Ketchikan?

In Ketchikan, Alaska, during the entire year, the rain falls for 221.8 days and collects up to 80" (2032mm) of precipitation.

When does it snow in Ketchikan?

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

How much does it snow in Ketchikan?

In Ketchikan, during the entire year, snow falls for 40.7 days and aggregates up to 48.35" (1228mm) of snow.

What is the month with the least sunshine in Ketchikan?

With an average of 3h of sunshine, January has the least sunshine of the year in Ketchikan.

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

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.

When does it snow the most in Ketchikan?

The month with the most snowfall in Ketchikan is February, when snow falls for 8 days and typically aggregates up to 13.11" (333mm) of snow.

When is the ocean coldest in Ketchikan?

With an average ocean temperature of 42.4°F (5.8°C), March is the month with the coldest seawater.

When is Daylight Saving Time (DST) in Ketchikan?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from AKST to AKDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from AKDT to AKST.

What is the least humid month in Ketchikan?

The least humid month is May, with an average relative humidity of 82%.

What is the driest month in Ketchikan?

The month with the least rainfall is May, when the rain falls for 17.1 days and typically collects 3.46" (88mm) of precipitation.

What month has the most sunshine in Ketchikan?

With an average of 7.2h of sunshine, May has the most sunshine of the year.

When it does not snow in Ketchikan?

June through October are months without snowfall in Ketchikan, Alaska.

When are the longest days in Ketchikan?

With an average of 17h and 22min of daylight, June has the longest days of the year.

What is the warmest month in Ketchikan?

Warmest months in Ketchikan are July and August, with an average high-temperature of 60.8°F (16°C).

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

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

What month is the ocean warmest in Ketchikan?

With an average ocean temperature of 55.9°F (13.3°C), August is the month with the warmest seawater in Ketchikan.

What is the coldest month in Ketchikan?

With an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 31.5°F (-0.3°C), December is the coldest month.

What is the month with the shortest days in Ketchikan?

December has the shortest days of the year, with an average of 7h and 13min of daylight.

Average temperature
Ketchikan, AK

Average temperature - Ketchikan, AK

The warmest months (with the highest average high temperature) are July and August (60.8°F).
The month with the lowest average high temperature is December (35.8°F).

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is February (30.6°F).

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Average pressure
Ketchikan, AK

Average pressure - Ketchikan, AK

The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).

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Average wind speed
Ketchikan, AK

Average wind speed - Ketchikan, AK

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average rainfall
Ketchikan, AK

Average rainfall - Ketchikan, AK

The wettest month (with the highest rainfall) is January (9.69").
The driest month (with the least rainfall) is May (3.46").

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Average rainfall days
Ketchikan, AK

Average rainfall days - Ketchikan, AK

The month with the highest number of rainy days is November (21.4 days).
The month with the least rainy days is February (14.2 days).

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Average snowfall
Ketchikan, AK

Average snowfall - Ketchikan, AK

The month with the highest snowfall is February (13.11").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Ketchikan, AK

Average snowfall days - Ketchikan, AK

The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature
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).

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Average daylight / Average sunshine
Ketchikan, AK

Average daylight / Average sunshine - Ketchikan, AK

The month with the longest days is June (Average daylight: 17h and 22min).
The month with the shortest days is December (Average daylight: 7h and 13min).

The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days
Ketchikan, AK

Average sunshine days - Ketchikan, AK

The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is November (5.6 days).

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Average UV index
Ketchikan, AK

Average UV index - Ketchikan, AK

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

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Average visibility
Ketchikan, AK

Average visibility - Ketchikan, AK

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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