Anchorage Weather in December
United States · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Anchorage sees average temperatures ranging from a low of -10.7°C (12.7°F) to a high of -5.4°C (22.3°F), with a mean of -8.0°C (17.6°F). Compared to the annual average of 2.5°C (36.5°F), this month is 10.5°C cooler than the yearly norm. Precipitation averages 71.8mm, making it approximately 0.0mm drier than the monthly average of 72.0mm. The city receives an average of 1.3 hours of sunshine per day during December, with relative humidity averaging 83.9%. Wind speeds reach an average maximum of 14.8 km/h. Snowfall averages 44.9cm during December, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Anchorage, with drier-than-average conditions compared to the rest of the year.
Anchorage's subarctic climate creates long, cold winters and short, mild summers. I've tracked the daylight data and found that the city receives over 19 hours of daylight in June and barely 6 hours in December. The best time for visiting is June to August, when the temperatures are mild and the natural attractions are accessible.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | -6.1°C (21.0°F) | -8.0°C (17.6°F) | -9.4°C (15.1°F) |
| Rainfall | 75.7mm | 71.8mm | 46.9mm |
| Sunshine | 3.2 hrs | 1.3 hrs | 2.5 hrs |
| Humidity | 80.6% | 83.9% | 83.3% |
| Wind | 14.8 km/h | 14.8 km/h | 14.8 km/h |
| Rainy Days | 6.8 | 5.0 | 3.6 |
| Snowfall | 43.4 cm | 44.9 cm | 29.8 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Anchorage in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Anchorage in December?
The average temperature in Anchorage during December ranges from -10.7°C (12.7°F) to -5.4°C (22.3°F), with a mean of -8.0°C (17.6°F).
How much does it rain in Anchorage in December?
Anchorage receives an average of 71.8mm of precipitation in December, spread across approximately 5.0 rainy days.
What should I pack for Anchorage in December?
Based on December weather data, pack heavy winter clothing, thermal layers, and a warm coat.
Is December a good time to visit Anchorage?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Anchorage
Cities with Similar December Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 61.22°, -149.9°. Timezone: America/Anchorage. Last updated: 2026-07-30.