January 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).

Temperature

In Ketchikan, the average high-temperature in January is essentially the same as in December - a still wintry 36.5°F (2.5°C). In January, in Ketchikan, the average low-temperature is 31.6°F (-0.2°C).

Humidity

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

Rainfall

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

Snowfall

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

Ocean temperature

In Ketchikan, Alaska, the average water temperature is 43.3°F (6.3°C).
Note: Swimming in 43.3°F (6.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In January, the average length of the day is 7h and 52min.
On the first day of January in Ketchikan, Alaska, sunrise is at 8:13 am and sunset at 3:27 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:20 pm AKST.

Sunshine

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

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 1 in January transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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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%.

What is the average humidity in January in Ketchikan?

In January, the average relative humidity is 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 many days does it rain in January in Ketchikan?

In January, the rain falls for 19.2 days. Throughout January, 9.69" (246mm) of precipitation is accumulated.

How much does it snow in Ketchikan in January?

In Ketchikan, in January, snow falls for 7.3 days, with typically accumulated 10.31" (262mm) of snow.

What is the water temperature 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 dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Ketchikan have in January?

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

When is the sunrise / sunset in January in Ketchikan?

On the first day of January, sunrise is at 8:13 am and sunset at 3:27 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:20 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 in Ketchikan, Alaska.

How many hours of sunshine does Ketchikan have in January?

The average sunshine duration in January in Ketchikan, Alaska, is 3h.

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.

What is the UV index intensity in January in Ketchikan?

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
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 52min

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).

  • 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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