Anchorage Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Anchorage, Alaska. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Anchorage?

In Anchorage, September has the greatest precipitation of any month. On average, Anchorage gets 3.1 inches of precipitation in September.

September is also the month where rain is most common. 49.7% of days in September will have at least some rain or snow.

What's the Driest Month in Anchorage?

In Anchorage, April has the least precipitation of any month. On average, Anchorage gets 0.43 inches of precipitation in April.

April is also the month where rain is least common. 16.4% of days in April will have measurable rain or snow.

Month	Precipitation	% Chance
January	0.75 in	26.2
February	0.86 in	27.8
March	0.69 in	19.4
April	0.43 in	16.4
May	0.65 in	21.0
June	1.01 in	28.7
July	1.82 in	37.6
August	2.93 in	46.6
September	3.09 in	49.7
October	1.82 in	37.1
November	1.19 in	32.7
December	1.15 in	34.7
Year	16.39 in	31.5

Weather Station Details

Years	Station	Coordinates
1953–2024	Anchorage International Airport	location
1916–1952	Anchorage Merrill Field	location