January weather forecast
Ketchikan, AK

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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

In Ketchikan, Alaska, January's weather is marked by a predominance of wet conditions and a chill in the air. Average temperatures range from 31.6°F (-0.2°C) to 36.5°F (2.5°C) this month, noticeably lower than the eminently impending spring months. Also noteworthy is the snowfall comprising 10.31" (262mm) in total which sets the city into a winter wonderland. Due to the polar latitude, Ketchikan experiences only 7.9 hours of daylight which makes for short, frosty days. The city, nevertheless, dons a beautiful snow-capped look during this period.

Temperature

The shift into January finds Ketchikan at an average high-temperature of a still icy 36.5°F (2.5°C), closely comparable to December's conditions. Ketchikan registers a steady nighttime temperature averaging a freezing cold 31.6°F (-0.2°C) throughout January.

Humidity

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

Rainfall

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

Snowfall

January through May, November and December are months with snowfall. In Ketchikan, in January, during 7.3 snowfall days, 10.31" (262mm) of snow is typically accumulated. Throughout the year, in Ketchikan, there are 40.7 snowfall days, and 48.35" (1228mm) of snow is accumulated.

Ocean temperature

In January, the average ocean temperature in Ketchikan is 43.3°F (6.3°C).
Note: Danger awaits those who swim in 43.3°F (6.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.

Daylight

In January, the average length of the day in Ketchikan is 7h and 52min.
On the first day of the month, sunrise is at 8:13 am and sunset at 3:26 pm. On the last day of January, sunrise is at 7:40 am and sunset at 4:19 pm AKST.

Sunshine

The month with the least sunshine in Ketchikan is January, with an average of 3h of sunshine.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Ketchikan, Alaska. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 1 in January converts into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

How cold is it in Ketchikan in January?

The high-temperature in Ketchikan, Alaska, during January is 36.5°F (2.5°C) and the low-temperature is 31.6°F (-0.2°C).

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 average humidity in January in Ketchikan?

The average relative humidity in January in Ketchikan, Alaska, is 88%.

What is the wettest month in Ketchikan?

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

How much does it rain in Ketchikan in January?

In Ketchikan, Alaska, during January, the rain falls for 19.2 days and regularly aggregates up to 9.69" (246mm) of precipitation.

How many days does it snow in January in Ketchikan?

In Ketchikan, Alaska, during January, snow falls for 7.3 days and regularly aggregates up to 10.31" (262mm) of snow.

How cold is the water in January in Ketchikan?

In Ketchikan, in January, the average water temperature is 43.3°F (6.3°C). Swimming in 43.3°F (6.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in January in Ketchikan?

In Ketchikan, Alaska, the average day length in January is 7h and 52min.

When is the sunrise / sunset in January in Ketchikan?

In January, on the first day of the month, sunrise is at 8:13 am and sunset at 3:26 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:19 pm AKST.

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.

How many hours of sunshine does Ketchikan have in January?

In January, the average sunshine duration in Ketchikan is 3h.

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

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

What is the UV index intensity in January in Ketchikan?

The average daily maximum UV index in January in Ketchikan, Alaska, is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Ketchikan, AK

Average temperature in January - Ketchikan, AK
  • Average high temperature in January: 36.5°F

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).

  • Average low temperature in January: 31.6°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 in January
Ketchikan, AK

Average pressure in January - Ketchikan, AK
  • Average pressure in January: 29.86"Hg

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 in January
Ketchikan, AK

Average wind speed in January - Ketchikan, AK
  • Average wind speed in January: 8.7mph

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 humidity in January
Ketchikan, AK

Average humidity in January - Ketchikan, AK
  • Average humidity in January: 88%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (82%).

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Average rainfall in January
Ketchikan, AK

Average rainfall in January - Ketchikan, AK
  • Average rainfall in January: 9.69"

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 in January
Ketchikan, AK

Average rainfall days in January - Ketchikan, AK
  • Average rainfall days in January: 19.2 days

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 in January
Ketchikan, AK

Average snowfall in January - Ketchikan, AK
  • Average snowfall in January: 10.31"

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 in January
Ketchikan, AK

Average snowfall days in January - Ketchikan, AK
  • Average snowfall days in January: 7.3 days

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 in January
Ketchikan, AK

Average sea temperature in January - Ketchikan, AK
  • Average sea temperature in January: 43.3°F

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 in January /
Average sunshine in January
Ketchikan, AK

Average daylight in January / Average sunshine in January - Ketchikan, AK
  • Average daylight in January: 7h and 5min

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 12min).

  • Average sunshine in January: 3h and 0min

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 in January
Ketchikan, AK

Average sunshine days in January - Ketchikan, AK
  • Average sunshine days in January: 7.8 days

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 in January
Ketchikan, AK

Average UV index in January - Ketchikan, AK
  • Average UV index in January: 1

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 cloud cover in January
Ketchikan, AK

Average cloud cover in January - Ketchikan, AK
  • Average cloud cover in January: 71

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 55).

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Average visibility in January
Ketchikan, AK

Average visibility in January - Ketchikan, AK
  • Average visibility in January: 5mi

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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Ketchikan, Alaska, USA

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