Monthly weather forecast and climate
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 average temperature varying between 36.5°F (2.5°C) and 31.6°F (-0.2°C). In Ketchikan, the average high-temperature in January is almost the same as in December - a still wintry 36.5°F (2.5°C). Weather in January »

Weather in February

February, the last month of the winter, in Ketchikan, is also a wintry month, with temperature in the range of an average low of 30.6°F (-0.8°C) and an average high of 37°F (2.8°C). In Ketchikan, the average high-temperature is practically 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 average temperature ranging between max 40.3°F (4.6°C) and min 32.4°F (0.2°C). In Ketchikan, the average high-temperature is practically the same as in February - a still cold 40.3°F (4.6°C). Weather in March »

Weather in April

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

Weather in May

The last month of the spring, May, is a fresh month in Ketchikan, Alaska, with average temperature fluctuating between 43.5°F (6.4°C) and 53.4°F (11.9°C). In May, the average high-temperature marginally rises, from a frosty 46°F (7.8°C) in April, to a fresh 53.4°F (11.9°C). Weather in May »

Weather in June

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

Weather in July

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

Weather in August

The last month of the summer, August, is also an enjoyable month in Ketchikan, Alaska, with temperature in the range of an average low of 52°F (11.1°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 August »

Weather in September

September, the first month of the autumn, in Ketchikan, is also a moderate month, with average temperature fluctuating between 56.3°F (13.5°C) and 48.7°F (9.3°C). In Ketchikan, Alaska, 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 a frosty autumn month in Ketchikan, Alaska, with average temperature ranging between min 42.1°F (5.6°C) and max 48.2°F (9°C). In Ketchikan, the average high-temperature marginally drops, from a moderate 56.3°F (13.5°C) in September, to a chilly 48.2°F (9°C). Weather in October »

Weather in November

November, the last month of the autumn, in Ketchikan, is another cold month, with average temperature fluctuating between 40.8°F (4.9°C) and 36.1°F (2.3°C). In November, the average high-temperature slightly decreases, 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 average temperature ranging between min 31.5°F (-0.3°C) and max 35.8°F (2.1°C). 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. Weather in December »
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FAQ

What is the most humid month in Ketchikan?

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

How much does it rain in Ketchikan?

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

What is the wettest month in Ketchikan?

The month with the most rainfall in Ketchikan is January when the rain falls for 19.2 days and typically aggregates up to 9.69" (246mm) of precipitation.

When does it snow in Ketchikan?

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

How many days 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 is the month with the lowest UV index in Ketchikan?

Months with the lowest UV index in Ketchikan, Alaska, are January, November and December, with an average maximum UV index of 1.

What is the snowiest month in Ketchikan?

February is the month with the most snowfall. Snow falls for 8 days and accumulates 13.11" (333mm) of snow.

What is the month with the coldest ocean in Ketchikan?

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

What is the least humid month in Ketchikan?

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

What is the driest month in Ketchikan?

The month with the least rainfall in Ketchikan, Alaska, 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?

In Ketchikan snow does not fall in June through October.

When are the longest days in Ketchikan?

The month with the longest days is June, with an average of 17.4h of daylight.

What is the warmest month in Ketchikan?

Warmest months 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?

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

What is the month with the warmest ocean in Ketchikan?

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

What is the coldest month in Ketchikan?

December 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).

What is the month with the shortest days in Ketchikan?

December has the shortest days of the year in Ketchikan, Alaska, with an average of 7.2h 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").
The month with the lowest atmospheric pressure is November (29.8").

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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").
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).
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: 17.4h).
The month with the shortest days is December (Average daylight: 7.2h).

The month with the most sunshine is May (Average sunshine: 7.2h).
The month with the least sunshine is January (Average sunshine: 3h).

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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 visibility
Ketchikan, AK

Average visibility - Ketchikan, AK

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

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