What’s the climate like in Ketchikan?
The current climate of Ketchikan features average monthly temperatures ranging from highs of 19°C during the day to lows of 5°C. 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.
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.
On average, Ketchikan gets 4115 mm of precipitation each year. Of this, about 98 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Ketchikan?
The best time to visit Ketchikan for pleasant to warm weather is May through September. There might be some rain during this period, but the temperatures are just right for exploring Ketchikan.
Climate Table of Ketchikan
The climate table of Ketchikan shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation 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.
- Average yearly temperature: 12°C
- Highest temperature: 19°C in July and August
- Lowest temperature: 5°C in February and December
- Precipitation*: 4115 mm per year, averaging 343 mm per month
- Snowfall: 98 cm per year
- Driest months: 173 mm in May, 187 mm in July and 213 mm in June
- Wettest months: 645 mm in November, 472 mm in January and 430 mm in October
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Ketchikan
This graph shows the average maximum temperatures per month in Ketchikan, Alaska. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Ketchikan
This graph shows how much precipitation Ketchikan, Alaska, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Ketchikan
This graph shows how much snow Ketchikan, Alaska, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Ketchikan
This graph 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.
Yearly Temperature in Ketchikan
This graph shows the average yearly temperature in Ketchikan, Alaska. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Ketchikan
This chart shows the total yearly precipitation in Ketchikan, Alaska, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Ketchikan
This chart shows the total yearly snowfall in Ketchikan, Alaska, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
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.
