October weather forecast and climate
Seattle, WA

Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington
Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington
October experiences the fall under the most favorable conditions amid a humidity of 78.3%. Mildly warm and pleasant temperatures in the range of 46.4°F (8°C) and 60.8°F (16°C) make desirable touring the beautiful parks under the mildly cloudy skies. A golden look hangs over Seattle making the trees magnificent as they change leaf color and drop the brownish leaves.
Afternoon rain showers are a norm for thirteen days, making October slightly wet and raising the precipitation to 3.5" (88.9mm).
The sea temperature drop to 51.8°F (11°C) and the shore visitors prefer enjoying basking in the sun for up to five hours per day.

What is the temperature in October in Seattle?

The average high-temperature, in October, is 59.7°F (15.4°C), while the average low-temperature is 45.9°F (7.7°C).

How much does it rain in Seattle in October?

In Seattle, Washington, in October, it is raining for 13.1 days, with typically 3.5" (88.4mm) of accumulated precipitation.

Does it snow in Seattle in October?

In Seattle, Washington, in October, it doesn't snow. In November, it regularly snows.
Average temperature in October - Seattle, WA
  • Average high temperature in October: 59.7°F

The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (45.7°F).

  • Average low temperature in October: 45.8°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (35.6°F).

Average humidity in October - Seattle, WA
  • Average humidity in October: 78.6%

The month with the highest relative humidity is December (80.1%).
The month with the lowest relative humidity is July (65.4%).

Average rainfall in October - Seattle, WA
  • Average rainfall in October: 3.5"

The wettest month (with the highest rainfall) is November (6.6").
The driest month (with the lowest rainfall) is July (0.7").

Average rainfall days in October - Seattle, WA
  • Average rainfall days in October: 13.1 days

The month with the highest number of rainy days is November (18.4 days).
The month with the lowest number of rainy days is August (4.8 days).

Average snowfall in October - Seattle, WA
  • Average snowfall in October: 0"

Months with the highest snowfall are February and December (1.7").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in October - Seattle, WA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is December (1.6 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in October - Seattle, WA
  • Average sea temperature in October: 50.9°F

The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).

Average daylight in October / Average sunshine in October - Seattle, WA
  • Average daylight in October: 10.8h

The month with the longest days is June (Average daylight: 15.9h).
The month with shortest days is December (Average daylight: 8.5h).

  • Average sunshine in October: 4.6h

The month with most sunshine is July (Average sunshine: 10.1h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in October - Seattle, WA
  • Average UV index in October: 3

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

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