October weather forecast
Seattle, WA

Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington
Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington

Weather in October

October, like September, is a moderate autumn month in Seattle, Washington, with an average temperature ranging between min 45.3°F (7.4°C) and max 58.6°F (14.8°C).

Temperature

In October, the average high-temperature decreases from an agreeable 69.6°F (20.9°C) in September to a mild 58.6°F (14.8°C). The average low-temperature, in Seattle, is 45.3°F (7.4°C).

Humidity

In October, the average relative humidity is 79%.

Rainfall

In Seattle, during October, the rain falls for 7.2 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 84.2 rainfall days, and 5.2" (132mm) of precipitation is accumulated.

Snowfall

April through October and December are months without snowfall.

Ocean temperature

In Seattle, the average water temperature is 50.9°F (10.5°C).
Note: Swimming in 50.9°F (10.5°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Seattle, the average length of the day in October is 10h and 50min.
On the first day of October in Seattle, Washington, sunrise is at 7:08 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:53 pm PDT.

Sunshine

The average sunshine in October is 5.6h.

UV index

The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 3 in October transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in October in Seattle?

In October, in Seattle, the average high-temperature is 58.6°F (14.8°C), and the average low-temperature is 45.3°F (7.4°C).

What is the average humidity in October in Seattle?

The average relative humidity in October in Seattle is 79%.

How much does it rain in Seattle in October?

In October, the rain falls for 7.2 days. Throughout October, 0.51" (13mm) of precipitation is accumulated.

When it does not snow in Seattle?

April through October and December are months without snowfall.

Does it snow in Seattle in October?

In Seattle, Washington, in October, it doesn't snow. In November, it regularly snows.

How cold is the water in October in Seattle?

In October, the average ocean temperature in Seattle, Washington, is 50.9°F (10.5°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in October in Seattle?

The average day length in October in Seattle is 10h and 50min.

When is the sunrise / sunset in October in Seattle?

In October, on the first day of the month, sunrise is at 7:08 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:53 pm PDT.

How many hours of sunshine does Seattle have in October?

In Seattle, the average sunshine duration in October is 5.6h.

What is the UV index intensity in October in Seattle?

In Seattle, Washington, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Seattle, WA

Average temperature in October - Seattle, WA
  • Average high temperature in October: 58.6°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 (43.7°F).

  • Average low temperature in October: 45.3°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.1°F).

[Resources]

Average pressure in October
Seattle, WA

Average pressure in October - Seattle, WA
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

[Resources]

Average wind speed in October
Seattle, WA

Average wind speed in October - Seattle, WA
  • Average wind speed in October: 4.4mph

The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

[Resources]

Average humidity in October
Seattle, WA

Average humidity in October - Seattle, WA
  • Average humidity in October: 79%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (69%).

[Resources]

Average rainfall in October
Seattle, WA

Average rainfall in October - Seattle, WA
  • Average rainfall in October: 0.51"

The wettest month (with the highest rainfall) is December (0.87").
The driest months (with the least rainfall) are July and August (0.12").

[Resources]

Average rainfall days in October
Seattle, WA

Average rainfall days in October - Seattle, WA
  • Average rainfall days in October: 7.2 days

The month with the highest number of rainy days is November (9.1 days).
The month with the least rainy days is August (2.8 days).

[Resources]

Average snowfall in October
Seattle, WA

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

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

[Resources]

Average snowfall days in October
Seattle, WA

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

The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average sea temperature in October
Seattle, WA

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).

[Resources]

Average daylight in October /
Average sunshine in October
Seattle, WA

Average daylight in October / Average sunshine in October - Seattle, WA
  • Average daylight in October: 10h and 50min

The month with the longest days is June (Average daylight: 15h and 55min).
The month with the shortest days is December (Average daylight: 8h and 31min).

  • Average sunshine in October: 5h and 36min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

[Resources]

Average sunshine days in October
Seattle, WA

Average sunshine days in October - Seattle, WA
  • Average sunshine days in October: 21.1 days

The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is November (16.8 days).

[Resources]

Average UV index in October
Seattle, WA

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in October
Seattle, WA

Average cloud cover in October - Seattle, WA
  • Average cloud cover in October: 41

The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

[Resources]

Average visibility in October
Seattle, WA

Average visibility in October - Seattle, WA
  • Average visibility in October: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location