Anchorage (AK) Weather and Climate: A Comprehensive Guide
The climate in Anchorage is marked by big temperature swings throughout the year.
Temperatures range from mild during the warmest months
to very cold in the cooler months.
It maintains moderate precipitation patterns.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
In Anchorage, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a moderate 18°C in July to a very cold -5°C in the coolest month, January.
Nights are cooler, with lows often dropping to around -10°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
On average, Anchorage receives a reasonable amount of rain/snowfall, with an annual precipitation of 900 mm. The climate in Anchorage shows significant variation throughout the year. Expect high rainfall in September, with an average of 131 mm of precipitation over 14 rainy days. In contrast, May offers drier and sunnier days, with around 39 mm of rainfall over 8 rainy days. For more details, please visit our Anchorage Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Anchorage serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 9.6 hours of sunshine daily, and embrace the darker days in December, offering only 1.8 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Anchorage.
The city experiences its highest humidity in November, reaching 77%. In May, the humidity drops to its lowest level at 62%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed over the year ranges from 2 m/s in January, February, March, August, September, October, November and December to 3 m/s in April, May, June and July.
The mean monthly wind speed over the year (meters per second)
overcast and chance of snow overcast and no rain overcast and small chance of slight snowForecast for Anchorage (AK)
4 m/s
3 m/s
2 m/s
The best time of year to visit Anchorage in the United States of America
Other facts from our historical weather data:July has an average maximum temperature of 18°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -5°C.
September tops the wettest month list with 131 mm of rainfall.
May is the driest month with 39 mm of precipitation.
May is the sunniest month with an average of 289 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
