Sitka Average Rainfall by Month

This page shows the average precipitation in each month of the year in Sitka, Alaska. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Sitka?
In Sitka, October has the greatest precipitation of any month. On average, Sitka gets 11.8 inches of precipitation in October.
October is also the month where rain is most common. 76.5% of days in October will have at least some rain.
What's the Driest Month in Sitka?
In Sitka, June has the least precipitation of any month. On average, Sitka gets 2.93 inches of precipitation in June.
May is the month with the lowest chance of precipitation. 53.1% of days in May will have measurable rain.
Month Precipitation % Chance
January 8.40 in 68.5
February 5.88 in 59.2
March 5.62 in 59.4
April 4.30 in 58.2
May 3.82 in 53.1
June 2.93 in 55.7
July 4.54 in 60.8
August 7.32 in 62.7
September 11.73 in 74.7
October 11.83 in 76.5
November 10.00 in 73.2
December 8.47 in 69.7
Year 84.58 in 64.3
Weather Station Details
Years Station Coordinates
1945–2024 Sitka Airport location
1899–1944 Sitka Magnetic Observatory location
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