Anchorage, AK weather in May: average temperature & climate

For comparison, the hottest month in Anchorage , July , has days with highs of 65°F (18°C) and lows of 50°F (10°C) . The coldest month, January has days with highs of 22°F (-6°C) and lows of 14°F (-10°C) . This graph shows how an average day looks like in Anchorage in May based on historical data.

The average temperature in Anchorage in May for a typical day ranges from a high of 52°F (11°C) to a low of 38°F (3°C) . Some would describe it as cold, humid but cool .

The wettest month in Anchorage is August where a typical day has a 38 % chance of precipitation and gets 0.06 inches (1.5 mm) of precipitation, while the dryest month in Anchorage is April where a typical day has a 9 % chance of precipitation and gets 0.06 inches (1.5 mm) of precipitation. These graphs show the probability of it raining/snowing in May and the amount of rainfall.

In Anchorage in May , there’s a 14 % chance of rain or snow on an average day. And on the average day it rains or snows, we get 0.43 in ( 11.0 mm) of precipitation. In more common terms of how much that is, some would describe it as flurries .

How much does it rain or snow in May

The average amount of time that the sky is clear or sunny (partly cloudy or less) in Anchorage during May is 9.2 hours ( 39 % of the day). For comparison, the month with the most clear, sunny days in Anchorage is March with an average of 11.4 hours per day while December has the shortest amount of cloud-free hours with only 8.4 hours per day. This graph shows the average amount of sunshine in Anchorage in May based on historical data.

This graph shows the average amount of daylight in Anchorage in May based on historical data.

The day with the longest amount of daylight in Anchorage is June 21st with 19.4 hours while December 21st has the shortest amount of daylight with only 5.5 hours.

The average day in Anchorage during May has 17.4 hours of daylight, with sunrise at 5:13 AM and sunset at 10:39 PM .

In May , Anchorage is moderately humid with an average amount of 69 % (relative humidity), which could be described as humid but cool . December has the highest relative humidity at 87 % and is the least humid in May at 69 %. This graph shows the average amount of humidity in Anchorage throughout May based on historical data.

Historically, the wind in Anchorage during May blows at an average speed of 9.2 mph (14.8 kph) . The windiest month is December with an average wind speed of 12.0 mph (19.3 kph) , while the calmest month is July with an average wind speed of 7.8 mph (12.6 kph) . This graph shows the average wind speed in Anchorage in May based on historical data.

With an average high of 52°F (11°C) and a low of 38°F (3°C) , it generally feels cold, humid but cool . With that in mind, most people would dress in something warm like a jacket .

We’ve collected the weather data for Anchorage during all other months of the year too:

Where does this data come from

Weather data for Anchorage was collected from the MERRA-2 project from NASA, which used a climate model combined with historical data from weather stations around the world to estimate what the conditions were like for every point on the Earth.

For all data based on historical data, we’ve averaged the data from the past 11 years (2010-2020). For example, for the hourly temperature at 10am, we’ve looked at the temperature at 10am on every day in May (e.g., May 1, May 2, etc. in 2010, 2011, etc.) and took the arithmetic mean. We did not smooth the data, so for example, our daily temperature line will have some randomness due to the fact that weather is random in the first place.