Ketchikan Average Temperature by Month

This page shows the average temperature in each month of the year in Ketchikan, Alaska. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Ketchikan?
In Ketchikan, Alaska, the warmest month is August, with an average daily high temperature of 64.7 °F and an average low of 52.9 °F.
What's the Coldest Month in Ketchikan?
In Ketchikan, Alaska, the coolest month is January, with an average daily high temperature of 39.7 °F and an average low of 31.0 °F.
Month Avg. High Avg. Low
January 39.7 °F 31.0 °F
February 41.0 °F 31.1 °F
March 43.6 °F 31.9 °F
April 49.7 °F 36.6 °F
May 56.9 °F 42.7 °F
June 61.3 °F 48.7 °F
July 64.3 °F 52.8 °F
August 64.7 °F 52.9 °F
September 59.0 °F 47.9 °F
October 51.1 °F 40.9 °F
November 43.8 °F 35.2 °F
December 40.4 °F 32.2 °F
Year 51.4 °F 40.4 °F
Weather Station Details
Years Station Coordinates
1910–2024 Ketchikan International Airport location
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