Anchorage
Alaska, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Anchorage, AK

Wintertime in Anchorage, Alaska, with mountains blanketed in snow
Wintertime in Anchorage, Alaska, with mountains blanketed in snow
January, the same as December, in Anchorage, Alaska, is another subzero cold winter month, with average temperature varying between 32°F (0°C) and 20.3°F (-6.5°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 32°F (0°C).

Humidity

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

Rainfall

In Anchorage, Alaska, during 7.8 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 139.9 rainfall days, and 12.6" (320mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Anchorage, Alaska, in January, during 9.3 snowfall days, 3.15" (80mm) of snow is typically accumulated. Throughout the year, there are 59.3 snowfall days, and 23.5" (597mm) of snow is accumulated.

Ocean temperature

In Anchorage, the average seawater 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 January, the average length of the day in Anchorage is 6.6h.

Sunshine

In January, the average sunshine is 4h.

UV index

In Anchorage, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for 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.

What is the coldest month in Anchorage?

January is the coldest month, with an average high-temperature of 20.3°F (-6.5°C) and an average low-temperature of 32°F (0°C).

What is the temperature in January in Anchorage?

The average high-temperature, in January, in Anchorage, Alaska, is 20.3°F (-6.5°C), while the average low-temperature is 32°F (0°C).

What is the most humid month in Anchorage?

January through March, with an average relative humidity of 86%, are most humid months.

What is the average humidity in January in Anchorage?

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

How many days does it rain in January in Anchorage?

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

How much does it snow in Anchorage in January?

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

How cold is the water in January in Anchorage?

In Anchorage, Alaska, in January, the average water temperature is 37°F (2.8°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

How many hours of daylight does Anchorage have in January?

In Anchorage, Alaska, the average length of the day in January is 6.6h.

How many hours of sunshine does Anchorage have in January?

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

What is the UV index reading in January in Anchorage?

In Anchorage, Alaska, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
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: 0°F

Months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (0°F).
Coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (0°F).

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

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: 0.63"

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

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 lowest number of rainy days is February (7 days).

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

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

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).
Months with the lowest number of snowfall days are June, July and August (0 days).

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: 6.6h

The month with the longest days is June (Average daylight: 19.2h).
The month with shortest days is December (Average daylight: 5.6h).

  • Average sunshine in January: 4h

Months with most sunshine are May and June (Average sunshine: 11.7h).
The month with least sunshine is December (Average sunshine: 3.8h).

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

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).