Sequim weather in October: Sequim, Washington: normal highs, lows, rain and records for October
Sequim in October has a normal high of 58°F and a normal low of 40°F, a daily mean of 49°F, falling from 62°F on the 1st to 54°F by the 31st. Measurable precipitation falls on 13 days in a normal October, 1.63 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 14°C and low of 4°C, 41 mm of precipitation in October.
- NOAA stationSequim (2 mi E)
- Station IDUSC00457544
- Location48.09°N 123.06°W
- Elevation50 ft (15 m)
- Population8,199
- Jan 46° 32°
- Feb 48° 32°
- Mar 51° 35°
- Apr 56° 38°
- May 62° 44°
- Jun 65° 49°
- Jul 70° 52°
- Aug 70° 51°
- Sep 66° 46°
- Oct 58° 40°
- Nov 50° 35°
- Dec 46° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sequim in October?
The normal high is 58°F and the normal low 40°F, for a daily mean of 48.7°F. October is 7.3°F cooler than September and 6.2°F warmer than November. October is the 6th warmest month of the year in Sequim and the 4th wettest. Across the month the normal high falls 8°F, from 62°F on October 1 to 54°F on October 31. From one year to the next October's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 47°F and 50°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 50%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 62°F | 43°F | 35% | 12% |
| October 8 | 60°F | 41°F | 39% | 14% |
| October 15 | 58°F | 40°F | 42% | 16% |
| October 22 | 56°F | 39°F | 46% | 19% |
| October 31 | 54°F | 37°F | 50% | 22% |
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 | 62°F | 43°F | 35% | 12% | 11 h 40 min |
| October 2 | 62°F | 43°F | 35% | 12% | 11 h 40 min |
| October 3 | 61°F | 43°F | 36% | 12% | 11 h 40 min |
| October 4 | 61°F | 42°F | 36% | 13% | 11 h 30 min |
| October 5 | 61°F | 42°F | 37% | 13% | 11 h 30 min |
| October 6 | 60°F | 42°F | 37% | 13% | 11 h 30 min |
| October 7 | 60°F | 42°F | 38% | 14% | 11 h 20 min |
| October 8 | 60°F | 41°F | 39% | 14% | 11 h 20 min |
| October 9 | 59°F | 41°F | 39% | 14% | 11 h 20 min |
| October 10 | 59°F | 41°F | 40% | 15% | 11 h 10 min |
| October 11 | 59°F | 41°F | 40% | 15% | 11 h 10 min |
| October 12 | 59°F | 41°F | 41% | 15% | 11 h 10 min |
| October 13 | 58°F | 40°F | 41% | 16% | 11 h |
| October 14 | 58°F | 40°F | 42% | 16% | 11 h |
| October 15 | 58°F | 40°F | 42% | 16% | 11 h |
| October 16 | 57°F | 40°F | 43% | 17% | 10 h 50 min |
| October 17 | 57°F | 40°F | 43% | 17% | 10 h 50 min |
| October 18 | 57°F | 39°F | 44% | 17% | 10 h 50 min |
| October 19 | 57°F | 39°F | 44% | 18% | 10 h 40 min |
| October 20 | 56°F | 39°F | 45% | 18% | 10 h 40 min |
| October 21 | 56°F | 39°F | 46% | 18% | 10 h 40 min |
| October 22 | 56°F | 39°F | 46% | 19% | 10 h 30 min |
| October 23 | 56°F | 39°F | 47% | 19% | 10 h 30 min |
| October 24 | 55°F | 38°F | 47% | 19% | 10 h 30 min |
| October 25 | 55°F | 38°F | 48% | 20% | 10 h 20 min |
| October 26 | 55°F | 38°F | 48% | 20% | 10 h 20 min |
| October 27 | 55°F | 38°F | 49% | 20% | 10 h 20 min |
| October 28 | 54°F | 38°F | 49% | 21% | 10 h 10 min |
| October 29 | 54°F | 37°F | 50% | 21% | 10 h 10 min |
| October 30 | 54°F | 37°F | 50% | 22% | 10 h 10 min |
| October 31 | 54°F | 37°F | 50% | 22% | 10 h |
- Normal high
- 58°FOctober average
- Normal low
- 40°FOctober average
- Precipitation
- 1.63 inmonth total
- Days with precipitation
- 130.01 inch or more
- Nights at 32°F or colder
- 4
- Daylight
- 11 h 40 min to 10 hOctober 1 to October 31
- Sunshine
- 64%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00457544; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sequim in October?
On a given October day the chance of 0.01 inch or more is 43% on average, highest around October 31 (50%). In all, 1.63 in falls on 13 days of a normal October.
In a normal October in Sequim, 4 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00457544.
What are the records for October in Sequim?
The warmest October temperature on this station's record (since 1980) is 75°F, on October 15, 2022; the coldest is 19°F, on October 30, 2002. The wettest October brought 4.36 in (1985).
The October mean against the 1991-2020 normal of 48.7°F: 2021 48.7°F (at normal), 2022 53.8°F (+5.1), 2024 51.7°F (+3.0), 2025 51.0°F (+2.3). 3 of 4 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.7°F | at normal | 2.10 in |
| 2022 | 53.8°F | +5.1°F | 2.14 in |
| 2024 | 51.7°F | +3.0°F | 1.55 in |
| 2025 | 51.0°F | +2.3°F | 1.57 in |
Source: records: ACIS, station USC00457544; recent months: ACIS, station USC00457544. Records and recent months use complete months only.
How does October in Sequim 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; Sequim's is 58°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.