Anchorage Weather in January

Winter weather peaks in January at Anchorage, Alaska. This is the city's coldest month of the year. Plus it's when there's the deepest build up of snow on the ground.

This page gives detailed information on typical January temperature, precipitation, snow, sun, humidity, wind and storms for Anchorage.

The numbers here are historical averages based on climate data gathered at the Ted Stevens Anchorage International Airport, located a few miles from downtown Anchorage.

Temperature Weather iconTemperature

23 °F January average high -5 °C
11 °F January average low -12 °C

In most years, Anchorage averages a daily maximum temperature for January that's between 17 and 29 degrees Fahrenheit (-8 to -2 degrees Celsius). The minimum temperature usually falls between 4 and 18 °F (-16 to -8 °C).

January is the coldest month overall for Anchorage, with the 16th and 17th as its chilliest days. They have daily highs averaging 22.7 °F (-5.2 °C) and lows of 10.7 °F (-11.8 °C).

2 days 40 °F max. or more (4 °C)
21 days 20 °F min. or less (-8 °C)

Anchorage averages 23 days in January when the thermometer remains below freezing for the entire day. Temperatures above 50 °F (10 °C) are not expected here this month.

Usually every night in Anchorage has freezing temperatures during January. The thermometer dips to 0 °F (-18 °C) or below on an average of 7 nights.

Rainy Weather iconPrecipitation

0.7 in total precipitation 19 mm
8 days of rain or snowfall

Half the time, Anchorage receives 0.4 to 1.0 inches (9 to 26 mm) of precipitation in January. One in four years has drier weather, while another one in four is wetter.

Snowy Weather iconSnow

11.3 in total snowfall 28.7 cm
9 days with new snow

January's snowfall varies a lot from year to year in Anchorage. Between 5 and 14 inches (12 to 37 cm) of fresh snow arrives in half the years. Less new snow lands in one out of four Januaries, while another twenty-five percent are snowier.

Anchorage has its heaviest accumulation of snow in January. The city typically has at least 5 inches (13 cm) of snow on the ground for 24 days this month. The snowpack normally builds up to 10 inches (25 cm) or deeper on 16 days.

Sunny Weather iconSun

34 % sunshine
7 days clear skies

The sun's rays reach the ground in Anchorage during 34 percent of daylight hours on average in January, for a total of 69 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in January at Anchorage lasts for 6 hours and 34 minutes a day on average. The shortest day of the month is the 1st with 5 hours and 40 minutes of daylight. By the end of the month, the days have lengthened to 7:44 from sunrise to sunset. These durations can vary by a minute or three from year to year.

Humid Weather iconHumidity

73 % January average humidity

The relative humidity in Anchorage during December remains, on average, fairly steady throughout the day.

Local Time12 am3 am6 am9 am12 pm3 pm6 pm9 pm
Humidity % 74 74 74 74 74 73 74 73

Windy Weather iconWind

6.4 mph January wind speed average 10.3 kph

January is less windy than most other months in Anchorage.

Stormy Weather iconStorms

1 day snowfall of 3 inches (8 cm) or more
0 days with thunderstorms in January

These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.

Anchorage Weather
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