Anchorage Weather in May
By May, spring weather has arrived at Anchorage, Alaska. The snow is usually gone, and the temperature seldom goes below freezing. May is also Anchorage's sunniest month.
This page gives detailed information on the typical May temperature, precipitation, 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.
|56 °F||May average high||14 °C|
|40 °F||May average low||4 °C|
|27 days||50 °F max. or more (10 °C)|
|16 days||40 °F min. or less (4 °C)|
The temperature usually rises every day in May to over 40 degrees Fahrenheit (4 degrees Celsius) in Anchorage. The city averages 9 days this month when the thermometer reaches into the 60s °F (over 16 °C). Temperatures above 70 °F (21 °C) occur on an average of one or two days during May.
The thermometer dips to freezing or below on an average of 3 nights. But May does not normally get as cold as 20 °F (-8 °C).
|0.7 in||total precipitation||17 mm|
|7 days||of rain or snowfall|
Half the time, Anchorage receives 0.3 to 0.9 inches (9 to 23 mm) of rainfall in May. One in four years has drier weather, while another one in four is wetter. Every few years, some of May's precipitation falls as snow.
|4 days||clear skies|
May has more hours of sunshine than any other month at Anchorage. The sun's rays reach the ground during 50 percent of daylight hours on average in May, for a total of 272 hours in the month. Typically on 4 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in May at Anchorage lasts for 17 hours and 33 minutes a day on average. The shortest day of the month is the 1st with 16 hours and 16 minutes of daylight. By the end of the month, the days have lengthened to 18:42 from sunrise to sunset. These durations can vary by a minute or three from year to year.
|62 %||May average humidity|
The relative humidity in Anchorage during May usually peaks at 75 percent in the morning then drops to 50 percent by mid afternoon. This is the least humid time of year for Anchorage.
|Local Time||12 am||3 am||6 am||9 am||12 pm||3 pm||6 pm||9 pm|
|8.5 mph||May wind speed average||13.7 kph|
May is the windiest month for Anchorage.
|0 days||rainfall of 0.5 inches (13 mm) or more|
|0 days||with thunderstorms in May|
Every few years, Anchorage sees a thunderstorm during May.
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.