Seattle weather in October: Seattle, Washington: normal highs, lows, rain and records for October
Seattle in October has a normal high of 61°F and a normal low of 47°F, a daily mean of 54°F, falling from 66°F on the 1st to 56°F by the 31st. Measurable precipitation falls on 14 days in a normal October, 3.91 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 16°C and low of 8°C, 99 mm of precipitation in October.
- NOAA stationSeattle Tacoma International Airport
- Station IDUSW00024233
- Location47.44°N 122.31°W
- Elevation370 ft (113 m)
- From the center12 miles
- Population780,995
- Jan 48° 38°
- Feb 50° 38°
- Mar 54° 40°
- Apr 59° 43°
- May 66° 49°
- Jun 71° 53°
- Jul 77° 57°
- Aug 78° 57°
- Sep 72° 54°
- Oct 61° 47°
- Nov 52° 41°
- Dec 47° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Seattle in October?
The normal high is 61°F and the normal low 47°F, for a daily mean of 53.8°F. October is 8.8°F cooler than September and 7.3°F warmer than November. October is the 6th warmest month of the year in Seattle and the 5th wettest. Across the month the normal high falls 10°F, from 66°F on October 1 to 56°F on October 31. From one year to the next October's mean temperature typically moves about 1.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 52°F and 55°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 54%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 66°F | 51°F | 37% | 20% |
| October 8 | 63°F | 49°F | 41% | 23% |
| October 15 | 61°F | 47°F | 45% | 27% |
| October 22 | 58°F | 46°F | 49% | 31% |
| October 31 | 56°F | 44°F | 54% | 36% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 66°F | 51°F | 37% | 20% | 11 h 40 min |
| October 2 | 66°F | 50°F | 37% | 20% | 11 h 40 min |
| October 3 | 65°F | 50°F | 38% | 20% | 11 h 40 min |
| October 4 | 65°F | 50°F | 39% | 21% | 11 h 30 min |
| October 5 | 65°F | 50°F | 39% | 21% | 11 h 30 min |
| October 6 | 64°F | 49°F | 40% | 22% | 11 h 30 min |
| October 7 | 64°F | 49°F | 40% | 22% | 11 h 20 min |
| October 8 | 63°F | 49°F | 41% | 23% | 11 h 20 min |
| October 9 | 63°F | 49°F | 42% | 23% | 11 h 20 min |
| October 10 | 63°F | 48°F | 42% | 24% | 11 h 10 min |
| October 11 | 62°F | 48°F | 43% | 25% | 11 h 10 min |
| October 12 | 62°F | 48°F | 43% | 25% | 11 h 10 min |
| October 13 | 61°F | 48°F | 44% | 26% | 11 h |
| October 14 | 61°F | 47°F | 44% | 26% | 11 h |
| October 15 | 61°F | 47°F | 45% | 27% | 11 h |
| October 16 | 60°F | 47°F | 46% | 27% | 10 h 50 min |
| October 17 | 60°F | 47°F | 46% | 28% | 10 h 50 min |
| October 18 | 60°F | 47°F | 47% | 28% | 10 h 50 min |
| October 19 | 59°F | 46°F | 47% | 29% | 10 h 40 min |
| October 20 | 59°F | 46°F | 48% | 29% | 10 h 40 min |
| October 21 | 59°F | 46°F | 49% | 30% | 10 h 40 min |
| October 22 | 58°F | 46°F | 49% | 31% | 10 h 30 min |
| October 23 | 58°F | 45°F | 50% | 31% | 10 h 30 min |
| October 24 | 58°F | 45°F | 50% | 32% | 10 h 30 min |
| October 25 | 57°F | 45°F | 51% | 32% | 10 h 20 min |
| October 26 | 57°F | 45°F | 52% | 33% | 10 h 20 min |
| October 27 | 57°F | 45°F | 52% | 33% | 10 h 20 min |
| October 28 | 56°F | 44°F | 53% | 34% | 10 h 20 min |
| October 29 | 56°F | 44°F | 53% | 35% | 10 h 10 min |
| October 30 | 56°F | 44°F | 54% | 35% | 10 h 10 min |
| October 31 | 56°F | 44°F | 54% | 36% | 10 h 10 min |
- Normal high
- 61°FOctober average
- Normal low
- 47°FOctober average
- Precipitation
- 3.91 inmonth total
- Days with precipitation
- 140.01 inch or more
- Daylight
- 11 h 40 min to 10 h 10 minOctober 1 to October 31
- Days at 70°F or more
- 2
- Sunshine
- 63%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024233; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Seattle in October?
On a given October day the chance of 0.01 inch or more is 46% on average, highest around October 31 (54%). In all, 3.91 in falls on 14 days of a normal October, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024233.
How humid and windy is Seattle in October?
At 3 p.m. the normal temperature is 53°F with 68% relative humidity and a dew point of 43°F; at 6 a.m. it is 46°F with 86% humidity. The wind averages 7.6 mph, most often from the south-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 46°F | 42°F | 86% | 7.2 mph | – |
| 9 a.m. | 48°F | 42°F | 81% | 7.5 mph | – |
| noon | 52°F | 43°F | 71% | 8.2 mph | – |
| 3 p.m. | 53°F | 43°F | 68% | 8.2 mph | – |
| 6 p.m. | 50°F | 43°F | 76% | 7.8 mph | 19% |
| 9 p.m. | 48°F | 42°F | 79% | 7.8 mph | 31% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024233. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Seattle?
The warmest October temperature on this station's record (since 1945) is 89°F, on October 1, 1987; the coldest is 28°F, on October 19, 1949. The wettest October brought 10.05 in (2016); the snowiest, 2.0 inches (1971).
The October mean against the 1991-2020 normal of 53.8°F: 2021 51.8°F (−2.0), 2022 57.6°F (+3.8), 2023 54.6°F (+0.8), 2024 54.0°F (+0.2), 2025 53.3°F (−0.5). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 51.8°F | −2.0°F | 5.76 in |
| 2022 | 57.6°F | +3.8°F | 2.51 in |
| 2023 | 54.6°F | +0.8°F | 2.89 in |
| 2024 | 54.0°F | +0.2°F | 3.04 in |
| 2025 | 53.3°F | −0.5°F | 3.70 in |
Source: records: ACIS, station USW00024233; recent months: ACIS, station USW00024233. Records and recent months use complete months only.
How does October in Seattle compare across Washington?
Across the 96 places PlainClimate covers in Washington, October normal highs run from 56°F in Easton to 66°F in Kennewick; Seattle's is 61°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.