January weather forecast
Sitka, AK

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The glacial carved Three Sisters Mountains in Sitka, Alaska
The glacial carved Three Sisters Mountains in Sitka, Alaska

Weather in January

January in Sitka, Alaska is the heart of the winter season with significant snowfall and limited daylight. With an average of 8.4 days of snowfall and a total snow accumulation of 11.89" (302mm), the city is covered in a winter wonderland. This happens alongside higher levels of humidity, as January stands among the months with the highest relative humidity. Besides, wind speeds tend to be quite high as well, adding to the chill factor. Though the days are cold, the beauty of the snow is a sight to behold.

Temperature

January brings the lowest temperatures, with an average high of 34.7°F (1.5°C) and an average low of 30.4°F (-0.9°C).

Humidity

In January, the average relative humidity is 87%.

Rainfall

In Sitka, Alaska, during January, the rain falls for 20.8 days and regularly aggregates up to 9.13" (232mm) of precipitation. In Sitka, Alaska, during the entire year, the rain falls for 243.6 days and collects up to 82.76" (2102mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Sitka. In Sitka, in January, during 8.4 snowfall days, 11.89" (302mm) of snow is typically accumulated. In Sitka, during the entire year, snow falls for 52.4 days and aggregates up to 63.58" (1615mm) of snow.

Daylight

The average length of the day in January in Sitka is 7h and 32min.
On the first day of January, sunrise is at 8:39 am and sunset at 3:30 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 4:26 pm AKST.

Sunshine

With an average of 2.7h of sunshine, January has the least sunshine of the year in Sitka, Alaska.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 1 in January leads to these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What part of the year is the coldest in Sitka?

January, recording an average high temperature of 34.7°F (1.5°C) and a low temperature of 30.4°F (-0.9°C), is Sitka's coldest month.

How cold is January in Sitka?

The average high-temperature, in January, in Sitka, is 34.7°F (1.5°C), while the average low-temperature is 30.4°F (-0.9°C).

What is the average humidity in January in Sitka?

In Sitka, Alaska, the average relative humidity in January is 87%.

How many days does it rain in January in Sitka?

In January, in Sitka, Alaska, the rain falls for 20.8 days. Throughout January, 9.13" (232mm) of precipitation is accumulated.

How much does it snow in Sitka in January?

In Sitka, in January, snow falls for 8.4 days, with typically accumulated 11.89" (302mm) of snow.

How many hours of daylight does Sitka have in January?

The average day length in January is 7h and 32min.

When are sunrise and sunset in January in Sitka?

In January, on the first day of the month, sunrise is at 8:39 am and sunset at 3:30 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 4:26 pm AKST.

What is the month with the least sunshine in Sitka?

The month with the least sunshine is January, with an average of 2.7h of sunshine.

How long on average sun shines in January in Sitka?

In January, the average sunshine duration is 2.7h.

When is the lowest UV index in Sitka?

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

How high is the UV index in January in Sitka?

In January, the average daily maximum UV index in Sitka is 1. A UV Index value of 2, and less, symbolizes a low health risk 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
Sitka, AK

Average temperature in January - Sitka, AK
  • Average high temperature in January: 34.7°F

The warmest month (with the highest average high temperature) is August (57.9°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in January: 30.4°F

The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is February (29.7°F).

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Average pressure in January
Sitka, AK

Average pressure in January - Sitka, AK
  • Average pressure in January: 29.77"Hg

The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.72"Hg).

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Average wind speed in January
Sitka, AK

Average wind speed in January - Sitka, AK
  • Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

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Average humidity in January
Sitka, AK

Average humidity in January - Sitka, AK
  • Average humidity in January: 87%

The month with the highest relative humidity is August (89%).
The months with the lowest relative humidity are February and March (83%).

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Average rainfall in January
Sitka, AK

Average rainfall in January - Sitka, AK
  • Average rainfall in January: 9.13"

The wettest month (with the highest rainfall) is November (10.16").
The driest month (with the least rainfall) is May (3.82").

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Average rainfall days in January
Sitka, AK

Average rainfall days in January - Sitka, AK
  • Average rainfall days in January: 20.8 days

The month with the highest number of rainy days is October (23.5 days).
The month with the least rainy days is February (14.6 days).

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Average snowfall in January
Sitka, AK

Average snowfall in January - Sitka, AK
  • Average snowfall in January: 11.89"

The month with the highest snowfall is March (17.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Sitka, AK

Average snowfall days in January - Sitka, AK
  • Average snowfall days in January: 8.4 days

The month with the highest number of snowfall days is March (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Sitka, AK

Average daylight in January / Average sunshine in January - Sitka, AK
  • Average daylight in January: 7h and 3min

The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 48min).

  • Average sunshine in January: 2h and 4min

The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).

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Average sunshine days in January
Sitka, AK

Average sunshine days in January - Sitka, AK
  • Average sunshine days in January: 6.2 days

The month with the most sunshine days is May (8.8 days).
The month with the least sunshine days is June (4.8 days).

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Average UV index in January
Sitka, AK

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

The month with the highest UV index is July (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
Sitka, AK

Average cloud cover in January - Sitka, AK
  • Average cloud cover in January: 72

The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are February, May and September (Cloud cover 60).

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Average visibility in January
Sitka, AK

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

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

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Sitka, Alaska, USA

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