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October Weather in Sequim Washington, United States

Daily high temperatures decrease by 9°F, from 62°F to 53°F, rarely falling below 48°F or exceeding 69°F.

Daily low temperatures decrease by 5°F, from 49°F to 44°F, rarely falling below 38°F or exceeding 54°F.

For reference, on August 2, the hottest day of the year, temperatures in Sequim typically range from 55°F to 72°F, while on December 31, the coldest day of the year, they range from 37°F to 44°F.

Average High and Low Temperature in October in Sequim

Average High and Low Temperature in October in SequimOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313130°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FSepNovOct 162°FOct 162°F49°F49°FOct 3153°FOct 3153°F44°F44°FOct 1159°FOct 1159°F47°F47°FOct 2156°FOct 2156°F46°F46°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in October in Sequim

Average Hourly Temperature in October in SequimOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSepNovvery coldvery coldcoldcoolcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Bristol, United Kingdom (4,720 miles away) is the far-away foreign place with temperatures most similar to Sequim (view comparison).

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The month of October in Sequim experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 45% to 61%.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 55% of the time.

For reference, on January 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 67%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 75%.

Cloud Cover Categories in October in Sequim

Cloud Cover Categories in October in SequimOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNovOct 155%Oct 155%Oct 3139%Oct 3139%Oct 1149%Oct 1149%Oct 2143%Oct 2143%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Sequim, the chance of a wet day over the course of October is very rapidly increasing, starting the month at 26% and ending it at 50%.

For reference, the year's highest daily chance of a wet day is 57% on November 17, and its lowest chance is 7% on July 31.

Probability of Precipitation in October in Sequim

Probability of Precipitation in October in SequimOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%60%60%SepNovOct 126%Oct 126%Oct 3150%Oct 3150%Oct 1133%Oct 1133%Oct 2142%Oct 2142%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during October in Sequim is very rapidly increasing, starting the month at 2.7 inches, when it rarely exceeds 5.1 inches or falls below 0.5 inches, and ending the month at 5.9 inches, when it rarely exceeds 9.4 inches or falls below 2.4 inches.

Average Monthly Rainfall in October in Sequim

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of October in Sequim, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 40 minutes, implying an average daily decrease of 3 minutes, 21 seconds, and weekly decrease of 23 minutes, 25 seconds.

The shortest day of the month is October 31, with 9 hours, 57 minutes of daylight and the longest day is October 1, with 11 hours, 38 minutes of daylight.

Hours of Daylight and Twilight in October in Sequim

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Sequim is 7:12 AM on October 1 and the latest sunrise is 44 minutes later at 7:57 AM on October 31.

The latest sunset is 6:50 PM on October 1 and the earliest sunset is 56 minutes earlier at 5:54 PM on October 31.

Daylight saving time is observed in Sequim during 2024, but it neither starts nor ends during October, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:12 AM and sets 16 hours, 4 minutes later, at 9:16 PM, while on December 21, the shortest day of the year, it rises at 8:00 AM and sets 8 hours, 22 minutes later, at 4:21 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in October in Sequim

Sunrise & Sunset with Twilight and Daylight Saving Time in October in SequimOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSepNov7:12 AM7:12 AMOct 16:50 PMOct 16:50 PM7:57 AM7:57 AMOct 315:54 PMOct 315:54 PM7:26 AM7:26 AMOct 116:30 PMOct 116:30 PM7:41 AM7:41 AMOct 216:11 PMOct 216:11 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of October. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in October in Sequim

Solar Elevation and Azimuth in October in SequimOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSepNov0010102020203040000101020203030
northeastsouthwest
Solar elevation and azimuth over the course of October 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for October 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in October in Sequim

Moon Rise, Set & Phases in October in SequimOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 26:56 PMSep 26:56 PMSep 177:35 PMSep 177:35 PMOct 211:50 AMOct 211:50 AMOct 174:27 AMOct 174:27 AMNov 15:48 AMNov 15:48 AMNov 151:29 PMNov 151:29 PMNov 3010:22 PMNov 3010:22 PM5:56 AM5:56 AM7:58 PM7:58 PM7:19 PM7:19 PM7:37 AM7:37 AM7:07 AM7:07 AM6:45 PM6:45 PM5:56 PM5:56 PM7:57 AM7:57 AM8:20 AM8:20 AM5:39 PM5:39 PM4:06 PM4:06 PM8:49 AM8:49 AM7:30 AM7:30 AM3:34 PM3:34 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Oct 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
1%6:01 AME6:33 PMW-12:20 PMS252,388 mi
2
0%7:07 AME6:45 PMW-12:58 PMS252,597 mi
3
1%8:14 AMESE6:59 PMWSW-1:37 PMS252,377 mi
4
4%9:21 AMESE7:14 PMWSW-2:18 PMS251,714 mi
5
9%10:31 AMESE7:33 PMWSW-3:02 PMS250,579 mi
6
15%11:42 AMSE7:58 PMSW-3:50 PMS248,934 mi
7
23%12:52 PMSE8:31 PMSW-4:42 PMS246,749 mi
8
32%1:58 PMSE9:16 PMSW-5:37 PMS244,021 mi
9
43%2:55 PMSE10:15 PMSW-6:35 PMS240,798 mi
10
50%3:40 PMSE11:27 PMSW-7:33 PMS237,194 mi
11
65%4:15 PMSE--8:31 PMS233,402 mi
12
75%-12:47 AMSW4:42 PMESE9:26 PMS229,690 mi
13
85%-2:11 AMWSW5:03 PMESE10:19 PMS226,379 mi
14
93%-3:36 AMWSW5:22 PME11:10 PMS223,807 mi
15
96%-5:02 AMW5:39 PME--
16
98%-6:29 AMW5:56 PMENE12:00 AMS222,275 mi
17
100%-7:57 AMWNW6:16 PMENE12:51 AMS221,988 mi
18
99%-9:27 AMWNW6:40 PMENE1:45 AMS223,009 mi
19
95%-10:57 AMNW7:12 PMNE2:41 AMS225,241 mi
20
88%-12:21 PMNW7:55 PMNE3:41 AMS228,440 mi
21
79%-1:33 PMNW8:51 PMNE4:42 AMS232,263 mi
22
69%-2:28 PMNW9:58 PMNE5:41 AMS236,334 mi
23
58%-3:07 PMNW11:11 PMNE6:38 AMS240,303 mi
24
50%-3:36 PMNW-7:30 AMS243,897 mi
25
37%12:25 AMENE3:57 PMWNW-8:17 AMS246,930 mi
26
28%1:36 AMENE4:14 PMWNW-9:00 AMS249,300 mi
27
20%2:45 AMENE4:28 PMW-9:41 AMS250,975 mi
28
12%3:52 AME4:41 PMW-10:19 AMS251,978 mi
29
7%4:58 AME4:53 PMW-10:58 AMS252,367 mi
30
3%6:04 AME5:06 PMWSW-11:36 AMS252,217 mi
31
0%7:11 AMESE5:21 PMWSW-12:17 PMS251,605 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Sequim is essentially constant during October, remaining around 0% throughout.

Humidity Comfort Levels in October in Sequim

Humidity Comfort Levels in October in SequimOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SepNovOct 160%Oct 160%Oct 10%Oct 10%Oct 310%Oct 310%drydrycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Sequim is increasing during October, increasing from 4.2 miles per hour to 5.4 miles per hour over the course of the month.

For reference, on December 3, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.

Average Wind Speed in October in Sequim

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Sequim during October is predominantly out of the west from October 1 to October 5 and the south from October 5 to October 31.

Wind Direction in October in Sequim

Wind Direction in October in SequimWSOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%SepNovwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Sequim is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Sequim is gradually decreasing during October, falling by 2°F, from 52°F to 50°F, over the course of the month.

Average Water Temperature in October in Sequim

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Sequim typically lasts for 9.7 months (294 days), from around February 13 to around December 3, rarely starting after March 13, or ending before November 2.

The month of October in Sequim is very likely fully within the growing season, with the chance that a given day is in the growing season gradually decreasing from 100% to 91% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in October in Sequim

Time Spent in Various Temperature Bands and the Growing Season in October in Sequimgrowing seasonOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNov100%Oct 1100%Oct 191%Oct 3191%Oct 31100%Oct 11100%Oct 1197%Oct 2197%Oct 21very coldcoldcoolcomfortablefreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Sequim are gradually increasing during October, increasing by 89°F, from 1,440°F to 1,529°F, over the course of the month.

Growing Degree Days in October in Sequim

Growing Degree Days in October in SequimOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031311,200°F1,200°F1,300°F1,300°F1,400°F1,400°F1,500°F1,500°F1,600°F1,600°F1,700°F1,700°F1,800°F1,800°FSepNovOct 11,440°FOct 11,440°FOct 311,529°FOct 311,529°FOct 111,484°FOct 111,484°FOct 211,512°FOct 211,512°F
The average growing degree days accumulated over the course of October, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Sequim is rapidly decreasing during October, falling by 1.7 kWh, from 3.5 kWh to 1.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in October in Sequim

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Sequim are 48.080 deg latitude, -123.102 deg longitude, and 180 ft elevation.

The topography within 2 miles of Sequim contains very significant variations in elevation, with a maximum elevation change of 991 feet and an average elevation above sea level of 256 feet. Within 10 miles contains very significant variations in elevation (4,003 feet). Within 50 miles also contains extreme variations in elevation (7,848 feet).

The area within 2 miles of Sequim is covered by cropland (58%) and artificial surfaces (39%), within 10 miles by trees (39%) and water (38%), and within 50 miles by trees (45%) and water (34%).

This report illustrates the typical weather in Sequim, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Sequim.

For each station, the records are corrected for the elevation difference between that station and Sequim according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Sequim is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sequim and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Sequim and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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