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United StatesThe climate of Seattle
The current climate in Seattle features temperatures ranging from a high of 26°C to a low of 9°C throughout the year. The average yearly temperature is around 17°C. At night, temperatures in the colder months average around 3°C and in the warmer months around 16°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 Seattle, Washington.
Temperature records
The highest temperature recorded in Seattle in recent years was 41°C in June 2021. The lowest daytime temperature recorded was -5°C in December 2021.
Precipitation and snowfall
On average, Seattle gets 805 mm of precipitation each year. Of this, about 9,2 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Seattle?
The best time to visit Seattle for sunny weather is May through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Seattle. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Seattle
The climate table of Seattle 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) | 10 | 10 | 13 | 16 | 20 | 23 | 26 | 26 | 22 | 17 | 12 | 9 |
| Temp. min (°C) | 4 | 4 | 5 | 8 | 11 | 14 | 16 | 16 | 14 | 10 | 6 | 4 |
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| Precipitation (mm) | 103 | 117 | 87 | 59 | 31 | 25 | 5,5 | 11 | 34 | 92 | 119 | 121 |
| Snow (cm) | 1,6 | 3,7 | 0,4 | 0,3 | 0 | 0 | 0 | 0 | 0 | 0 | 0,5 | 2,7 |
| UV Index | 2 | 3 | 4 | 6 | 6 | 7 | 6 | 7 | 5 | 3 | 2 | 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 Seattle, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Seattle
Yearly Temperature in Seattle
Precipitation charts
These charts show the average amount of precipitation in Seattle, Washington. 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 Seattle
Total Yearly Precipitation in Seattle
Average Snowfall per Month in Seattle
Total Yearly Snowfall in Seattle
UV index chart
This chart shows the average UV index per month in Seattle, Washington. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Seattle
Weather experiences in Seattle
The weather in Seattle is rated an average of 0 out of 5 stars by 6 visitors. Have you been to Seattle? Share your weather experience to help other visitors.
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Average weather in Seattle by month
Click on a month below to see detailed weather info for Seattle. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.