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Seattle Weather in October

Seattle in October sees moderate daytime temperatures of 16°C (61°F) and nighttime lows of 8°C (46°F). Rainfall is fairly high this month at around 100 mm (3.9 in), so pack a rain jacket to stay dry.

Rainfall in Seattle in October

Based on our climate data of the past 30 years, about 16 days of rain are anticipated, with 100 mm (3.9 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Seattle in October

Temperatures in Seattle in October top out at 16°C (61°F) and drop to 8°C (46°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Seattle in October

The month brings about 143 hours of sunlight, offering a comfortable mix of sun and overcast.

Wind Speed in Seattle in October

Wind speeds average 4 m/s (8 knots) during October. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Seattle.

Seattle Temperature in October

Min Temperature
8°C (46°F)
Max Temperature
16°C (61°F)
Chance of Rain
52%
Precipitation
100 mm (3.9 in)
Rainy days
16 days
Humidity
78%
Windspeed
4 m/s (8 knots)
Sunshine
143 hours
Percentage Sunshine
42%

Seattle Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Seattle - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Seattle typically drop from around 18°C (64°F) at the start of October to approximately 13°C (55°F) by the end. Nights are cool, with lows typically ranging from 6°C (43°F) to 10°C (50°F).

Average temperatures in October

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

Historical weather records for Seattle in October

Browse day-by-day weather records for Seattle spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Seattle historical weather extremes in October

According to our 49 years of weather records for Seattle, the following extremes were recorded between 1976 and 2025.

  • Seattle recorded its highest October temperature of 28°C (82°F) on October 11, 1991.
  • On October 31, 1984, Seattle saw its coldest October day with temperatures maxing out at 4°C (39°F).
  • The coldest night in October in Seattle was on October 31, 2003, with a minimum of -1°C (30°F).

Best Places in the United States of America in October

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Seattle in October

Pack for changing conditions in Seattle in October. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Seattle in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    5/10
  • Cycling
    6/10
  • Walking
    6/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Seattle 3-Day Forecast

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.