Seattle, United States skyline

Seattle Weather in October

Typical October weather in Seattle, United States, based on 2006–2025 climate averages.

In October, Seattle averages a high of 14.7°C (58.5°F) and a low of 8.3°C (46.9°F), with about 14 rainy days (126 mm of rain) and 6.7 hours of sunshine a day.

Avg high

14.7°C (58.5°F)

Avg low

8.3°C (46.9°F)

Rainfall

126 mm (5 in)

Rainy days

14 days

Sunshine

6.7 h / day

Humidity

82%

October vs the rest of the year

Here is how every month in Seattle stacks up against October — the 5th wettest month for rain.

MonthAvg highvs OctoberRainRainy days
January7.5°C (45.5°F)−7.2°C (−13°F)177 mm18
February8.1°C (46.6°F)−6.6°C (−11.9°F)116 mm15
March10.6°C (51.1°F)−4.1°C (−7.4°F)135 mm17
April13.3°C (55.9°F)−1.4°C (−2.5°F)96 mm14
May17.3°C (63.1°F)+2.6°C (+4.7°F)67 mm11
June20.2°C (68.4°F)+5.5°C (+9.9°F)52 mm8
July24.4°C (75.9°F)+9.7°C (+17.5°F)17 mm4
August24.3°C (75.7°F)+9.6°C (+17.3°F)29 mm5
September20.6°C (69.1°F)+5.9°C (+10.6°F)66 mm9
October14.7°C (58.5°F)—126 mm14
November9.9°C (49.8°F)−4.8°C (−8.6°F)191 mm18
December6.9°C (44.4°F)−7.8°C (−14°F)179 mm18

What October feels like in Seattle

October is mid-autumn in Seattle. Daytime feels cool and fresh rather than cold. The gap between afternoon and night is small, so nights are cool and the temperature hardly changes after dark. Moisture in the air gives the cold a damp edge.

Rain in Seattle in October

October is persistently wet here: some rain falls on about every other day. Rain tends to come in heavy bursts: about 9 mm (0.4 in) on an average rainy day. Across the year Seattle averages about 8.3 mm per rainy day, so October is typical.

Daylight and sunshine in October

In mid-October, sunrise is at about 7:26 am and sunset at about 6:24 pm (local time) — 10 h 57 min of daylight. Evenings are drawing in — 1 h 42 min less daylight than mid-September. Measured sunshine covers about 61% of the daylight — there are plenty of bright spells.

How October compares to the rest of the year

Ranked by average high, October comes out as the 6th warmest month in Seattle. Against September, the average high is 5.9°C (10.6°F) lower, with 61 mm more rain. Temperatures keep falling into November. November averages a high of 9.9°C (49.8°F).

Who October suits

  • Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
  • Parks & outdoor: less ideal — too cool to sit outside for long.
  • Beach: less ideal — the sea air is too cool.
  • Hiking: less ideal — trails are cool.

Tips for visiting Seattle in October

Rain Protection

A compact umbrella and a light waterproof jacket.

Light Jacket

A light jacket or knit layer is enough for most of the day.

Quick questions

How warm is Seattle in October?

Afternoons average 14.7°C (58.5°F) and nights about 8.3°C (46.9°F) — cool by most people's standards. It is the 6th warmest month of the year.

Does it rain a lot in Seattle in October?

Quite a lot — 126 mm spread over about 14 days.

What should I wear in Seattle in October?

Pack rain protection and a light jacket. There is little need to change for the evening.

Is October or November better for visiting Seattle?

October scores better on our climate ranking (#7 of 12 vs #10), rated Good against Poor. November is cooler and has more rainy days.

Is October a good time to visit Seattle?

Good

Good — mild but cool days, frequent rain (about 14 rainy days). Within Seattle's own year, October ranks #7 of 12.

October in other United States cities

Warmer or drier places in October

Plan a trip to Seattle

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Seattle weather by month.