January weather forecast
Anchorage, AK

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Wintertime in Anchorage, Alaska with mountains blanketed in snow
Wintertime in Anchorage, Alaska with mountains blanketed in snow

Weather in January

January in Anchorage, Alaska reveals a somewhat bleak landscape, painted in hues of white and gray. Cold temperatures prevail, with averages oscillating between 13.1°F (-10.5°C) and 20.3°F (-6.5°C), marking January as one of the coldest months of the year. The landscapes are repeatedly dusted by snowfall, adding a whimsical touch to the overall chilly environment. Winds brush past lightly without significant gusts. Despite the bright winter sunshine reflecting off the snow, the city sees just a few hours of daylight, thus emphasizing the reputation of the Alaskan winter.

Temperature

With its high average temperature of 20.3°F (-6.5°C) and a low of 13.1°F (-10.5°C), January is regarded as the coldest month.

Humidity

The months with the highest humidity are January through March, with an average relative humidity of 86%.

Rainfall

In Anchorage, in January, during 7.8 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Anchorage, during the entire year, the rain falls for 139.9 days and collects up to 12.6" (320mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Anchorage, in January, during 9.3 snowfall days, 3.15" (80mm) of snow is typically accumulated. In Anchorage, during the entire year, snow falls for 59.3 days and aggregates up to 23.5" (597mm) of snow.

Ocean temperature

In Anchorage, in January, the average water temperature is 37°F (2.8°C).
Note: Regarding swimming, this is extremely cold, hazardous, and can lead to death. Hypothermia sets in rapidly without the protection of insulating waterproof gear.

Daylight

In January, the average length of the day is 6h and 35min.
On the first day of the month, sunrise is at 10:13 am and sunset at 3:52 pm. On the last day of January, sunrise is at 9:22 am and sunset at 5:03 pm AKST.

Sunshine

In Anchorage, the average sunshine in January is 4h.

UV index

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 during January translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What month is the coldest?

In Anchorage, the average lowest temperatures are observed in January, with a high of 20.3°F (-6.5°C) and a low of 13.1°F (-10.5°C).

How cold is it in January?

In January, in Anchorage, the average high-temperature is 20.3°F (-6.5°C), and the average low-temperature is 13.1°F (-10.5°C).

What is the most humid month?

The months with the highest humidity are January through March, with an average relative humidity of 86%.

What is the average humidity in January?

In January, the average relative humidity is 86%.

How many days does it rain in January?

In Anchorage, Alaska, during January, the rain falls for 7.8 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many days does it snow in January?

In Anchorage, during January, snow falls for 9.3 days and regularly aggregates up to 3.15" (80mm) of snow.

What is the water temperature in January?

In January, the average ocean temperature is 37°F (2.8°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the average length of the day in January?

In Anchorage, the average day length in January is 6h and 35min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 10:13 am and sunset at 3:52 pm. On the last day of the month, sunrise is at 9:22 am and sunset at 5:03 pm AKST.

How many hours of sunshine does Anchorage have in January?

In January, the average sunshine duration is 4h.

What is the UV index reading in January?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Anchorage, AK

Average temperature in January - Anchorage, AK
  • Average high temperature in January: 20.3°F

The warmest month (with the highest average high temperature) is July (61.9°F).
The month with the lowest average high temperature is January (20.3°F).

  • Average low temperature in January: 13.1°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in January
Anchorage, AK

Average pressure in January - Anchorage, AK
  • Average pressure in January: 29.7"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.67"Hg).

Average wind speed in January
Anchorage, AK

Average wind speed in January - Anchorage, AK
  • Average wind speed in January: 5.5mph

The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in January
Anchorage, AK

Average humidity in January - Anchorage, AK
  • Average humidity in January: 86%

The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is May (68%).

Average rainfall in January
Anchorage, AK

Average rainfall in January - Anchorage, AK
  • Average rainfall in January: 0.63"

The wettest month (with the highest rainfall) is September (1.93").
The driest month (with the least rainfall) is May (0.55").

Average rainfall days in January
Anchorage, AK

Average rainfall days in January - Anchorage, AK
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is February (7 days).

Average snowfall in January
Anchorage, AK

Average snowfall in January - Anchorage, AK
  • Average snowfall in January: 3.15"

The month with the highest snowfall is December (5.51").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Anchorage, AK

Average snowfall days in January - Anchorage, AK
  • Average snowfall days in January: 9.3 days

The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July and August (0 days).

Average sea temperature in January
Anchorage, AK

Average sea temperature in January - Anchorage, AK
  • Average sea temperature in January: 36.9°F

The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is February (35.8°F).

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

Average daylight in January / Average sunshine in January - Anchorage, AK
  • Average daylight in January: 6h and 4min

The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).

  • Average sunshine in January: 4h and 0min

The months with the most sunshine are May and June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).

Average sunshine days in January
Anchorage, AK

Average sunshine days in January - Anchorage, AK
  • Average sunshine days in January: 16.9 days

The month with the most sunshine days is January (16.9 days).
The month with the least sunshine days is September (11.1 days).

Average UV index in January
Anchorage, AK

Average UV index in January - Anchorage, AK
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in January
Anchorage, AK

Average cloud cover in January - Anchorage, AK
  • Average cloud cover in January: 40

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is May (Cloud cover 38).

Average visibility in January
Anchorage, AK

Average visibility in January - Anchorage, AK
  • Average visibility in January: 6mi

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

Anchorage, Alaska, USA

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