January weather forecast
Anchorage, AK

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

Weather in January

January, like December, is a freezing cold winter month in Anchorage, Alaska, with an average temperature ranging between max 20.3°F (-6.5°C) and min 13.1°F (-10.5°C).

Temperature

January is the coldest month, with an average high-temperature of 20.3°F (-6.5°C) and an average low-temperature of 13.1°F (-10.5°C).

Humidity

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

Rainfall

In January, in Anchorage, the rain falls for 7.8 days. Throughout January, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 139.9 rainfall days, and 12.6" (320mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Anchorage. In January, it is snowing for 9.3 days. Throughout January, 3.15" (80mm) of snow is 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, Alaska, the average water temperature is 37°F (2.8°C).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

In Anchorage, the average length of the day in January is 6h and 35min.
On the first day of January in Anchorage, Alaska, sunrise is at 10:13 am and sunset at 3:53 pm. On the last day of the month, sunrise is at 9:21 am and sunset at 5:04 pm AKST.

Sunshine

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

UV index

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. 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 coldest month in Anchorage?

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

What is the most humid month in Anchorage?

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 Anchorage?

The average relative humidity in January in Anchorage, Alaska, is 86%.

How many days does it rain in January in Anchorage?

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?

In January, in Anchorage, Alaska, it is snowing for 9.3 days. Throughout January, 3.15" (80mm) of snow is accumulated.

How cold is the water in January in Anchorage?

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?

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

What time are sunrise and sunset in January in Anchorage?

On the first day of January in Anchorage, sunrise is at 10:13 am and sunset at 3:53 pm. On the last day of the month, sunrise is at 9:21 am and sunset at 5:04 pm AKST.

How many hours of sunshine does Anchorage have in January?

The average sunshine duration in January is 4h.

How high is the UV index in January in Anchorage?

In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes 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
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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 35min

The month with the longest days is June (Average daylight: 19h and 13min).
The month with the shortest days is December (Average daylight: 5h and 38min).

  • 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).

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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).

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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).

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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).

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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).

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