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United StatesThe climate of Ketchikan
The current climate in Ketchikan features temperatures ranging from a high of 19°C to a low of 5°C throughout the year. The average yearly temperature is around 12°C. At night, temperatures in the colder months average around 0°C and in the warmer months around 13°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Ketchikan, Alaska.
Temperature records
The highest temperature recorded in Ketchikan in recent years was 29°C in July 2018. The lowest daytime temperature recorded was -9°C in December 2022.
Precipitation and snowfall
On average, Ketchikan gets 4115 mm of precipitation each year. Of this, about 98 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Ketchikan?
The best time to visit Ketchikan for mild to warm weather is May up to September. You might get some rain, but the temperatures are just right to explore Ketchikan.
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Climate Table of Ketchikan
The climate table of Ketchikan shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 6 | 5 | 7 | 10 | 15 | 17 | 19 | 19 | 16 | 12 | 8 | 5 |
| Temp. min (°C) | 2 | 0 | 1 | 4 | 8 | 11 | 13 | 13 | 11 | 6 | 4 | 1 |
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| Precipitation (mm) | 472 | 308 | 292 | 320 | 173 | 213 | 187 | 306 | 398 | 430 | 645 | 371 |
| Snow (cm) | 18 | 24 | 21 | 4,5 | 0,1 | 0 | 0 | 0 | 0 | 0 | 9,6 | 21 |
| UV Index | 1 | 2 | 4 | 4 | 6 | 6 | 5 | 5 | 4 | 2 | 1 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Ketchikan, Alaska. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Ketchikan
Yearly Temperature in Ketchikan
Precipitation charts
These charts show the average amount of precipitation in Ketchikan, Alaska. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Ketchikan
Total Yearly Precipitation in Ketchikan
Average Snowfall per Month in Ketchikan
Total Yearly Snowfall in Ketchikan
UV index chart
This chart shows the average UV index per month in Ketchikan, Alaska. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Ketchikan
Weather experiences in Ketchikan
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Average weather in Ketchikan by month
Click on a month below to see detailed weather info for Ketchikan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.