October Weather in Friday Harbor, United States

Last updated: February 24, 2025

In October, Friday Harbor experiences a mild maritime climate, with maximum temperatures reaching 15°C (60°F) and an average of 11°C (52°F). The chill in the air is marked by a minimum temperature of 5°C (41°F), inviting cozy layers for outdoor exploration. This month sees a significant precipitation total of 128 mm (5.1 in) over approximately 15 rainy days, contributing to the region’s lush greenery. With an humidity level of 88%, visitors can expect a moist atmosphere that highlights the beauty of autumn in this picturesque locale.

October Temperature in Friday Harbor

In October, Friday Harbor experiences a delightful transition as temperatures begin to cool from the warmth of summer. The minimum temperature settles at a crisp 5°C (41°F), providing a fresh backdrop for autumn activities. With an average temperature of 11°C (52°F) and a maximum reaching 15°C (60°F), the month offers a comfortable range, ideal for enjoying the stunning fall foliage. As the days grow shorter, the milder climate encourages outdoor exploration, making October an enchanting time to visit. Notably, this month marks a shift from the warmer highs of summer, yet maintains a temperate feel, making it a perfect blend of brisk and pleasant days.

October Weather in Friday Harbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Friday Harbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444245485255575956524844
Data source: Temperature data for Friday Harbor generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Friday Harbor

In October, Friday Harbor experiences a notable uptick in precipitation, receiving 128 mm (5.1 in) of rain over approximately 15 days. This increase marks a distinct transition from the drier summer months, where July and August saw only 16 mm (0.6 in) and 15 mm (0.6 in), respectively. As the autumn chill begins to settle in, October's rainfall is significantly higher than the preceding month of September, which recorded 68 mm (2.7 in). The onset of wetter weather continues into November, which averages a striking 194 mm (7.6 in) over 19 days, heralding a shift to the region's wet season. This pattern underscores the climatic rhythm of Friday Harbor, where October serves as a bridge from the dryness of summer to the more consistently wet conditions that characterize the later autumn months.

October Precipitation Trends in Friday Harbor

The chart displays monthly precipitation patterns in Friday Harbor, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec14312684653932161568128194161
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Friday Harbor

In October, Friday Harbor experiences a noticeable uptick in humidity, reaching 88%, the highest level since the spring months. This increase reflects a trend of rising humidity as summer transitions into autumn. Throughout the year, the humidity remains relatively stable, with levels fluctuating only slightly from 76% in September to close to 86% in the earlier months. However, the jump in October suggests that the island is preparing for the wetter, cooler months ahead, as the lush Pacific Northwest environment embraces the onset of fall. As November approaches, the humidity dips only slightly to 87%, hinting at a continuation of this moist air that characterizes the region's climate.

October Average Humidity in Friday Harbor

This chart illustrates the average monthly humidity levels in Friday Harbor, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Friday Harbor

As October rolls in, Friday Harbor experiences a moderate UV Index of 5, requiring about 30 minutes of sun exposure before the risk of burning increases. This marks a notable decline from the peak summer months, where the UV Index soared to a very high 9. Throughout the year, we see a distinct trend: starting from a low 2 in January, the UV levels climb steadily, reaching their zenith in June and July, before tapering off again in the fall. While October's UV Index is still higher than the winter months, it's a reminder to enjoy the outdoors while being mindful of sun safety. For more detailed information, visit Friday Harbor UV Index.

Maximum UV Index Levels in Friday Harbor for October

The chart shows the monthly maximum UV Index (UVI) for Friday Harbor in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Friday Harbor October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

October Sunshine in Friday Harbor

In October, Friday Harbor basks in a reassuring 200 hours of sunshine, a delightful prelude to the winter months ahead. This transitional period marks a notable decrease from the 265 hours enjoyed in September, yet still offers a warm embrace for outdoor enthusiasts and nature lovers. As the summer sun begins its retreat after peaking in July with 390 hours, the gradual decline in daylight highlights the region's beautiful shifts in season. October’s golden rays continue to illuminate the picturesque landscapes, inviting residents and visitors alike to savor the crisp air and vibrant fall colors that define this charming coastal town. Despite the fading light, the spirit of autumn shines bright in Friday Harbor.

Monthly Sunshine Duration in Friday Harbor: October Highlighted

The October sunshine duration represents the total number of hours Friday Harbor experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec87h150h216h246h339h353h390h351h265h200h130h101h
Data source: Friday Harbor October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Friday Harbor During October

In Friday Harbor, October sees a 28% chance of sunny weather, marking a notable dip from the summer months, where July boasts a peak of 77% sun likelihood. This decline continues from September's 37% chance, signaling the transition into fall. While the chance of sunny days in October is significantly lower than the summer high, it still presents a more favorable outlook than the winter months ahead, where sun chances plummet to around 20% in both November and December. As autumn unfolds, residents can expect an interplay of fleeting sunny days amid the increasing clouds, inviting cozy moments both indoors and out.

Percentage of Sunny Days in October in Friday Harbor

The chart illustrates the percentage of sunny days in Friday Harbor throughout the year, with October highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Friday Harbor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%29%34%55%46%58%77%56%37%28%20%21%
Data source: Friday Harbor October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Friday Harbor in October

As October unfolds in Friday Harbor, the length of daylight begins to wane, embracing the cooler temperatures of autumn. With 10 hours of daylight, this month marks a noticeable transition from the summer's peak of 16 hours in June, as daylight gradually recedes, revealing the rhythm of the changing seasons. Following a sunlit September featuring 12 hours, October continues to signal shorter days ahead, similar to November’s 9 hours and December’s 8 hours. This gradual decline not only highlights the encroaching winter but also invites an appreciation for each hour of sunlight, transforming daily routines and activities in this charming Pacific Northwest locale. As daylight diminishes, the crispness of fall envelops Friday Harbor, creating a picturesque and reflective atmosphere.

Average Daylight Hours in Friday Harbor for October

The chart illustrates the variation in daylight duration in Friday Harbor throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 48m10h 12m11h 57m13h 44m15h 15m16h 2m15h 36m14h 13m12h 30m10h 44m9h 10m8h 21m
Data source: Friday Harbor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Friday Harbor

As October sweeps into Friday Harbor, the wind begins to pick up, reaching an average speed of 5.4 m/s (12 mph). This marks a noticeable shift from the calmer summer months, where winds lingered around 4.0 to 4.3 m/s (9 to 10 mph). The transition into autumn brings a refreshing breeze, hinting at the approaching winter months. In fact, as the year progresses, the wind speed steadily increases, culminating in the bluster of November and December, which average 6.4 m/s (14 mph) and 6.7 m/s (15 mph), respectively. October serves as a gentle prelude to this escalation, embracing chinook-like gusts while still allowing for the lingering warmth of autumn.

Average October Wind Speed in Friday Harbor

The chart displays monthly wind speed patterns in Friday Harbor, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.36.44.93.94.04.34.34.24.05.4 m/s6.46.7
Data source: Friday Harbor October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Friday Harbor Compares to Other Months

The weather in Friday Harbor changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Friday Harbor and find detailed weather information for every month.

When comparing the weather in October and January, October tends to be milder, with average temperatures ranging from 5°C (41°F) to a maximum of 15°C (60°F), while January experiences colder conditions, with temperatures dropping as low as -3°C (27°F) and averaging 7°C (44°F). Precipitation is slightly lower in October at 128 mm (5.1 in) over 15 days, compared to January's 143 mm (5.6 in) over 16 days. Both months share high humidity levels, but October is slightly more humid at 88% compared to January’s 86%. For a deeper insight into January weather, you can refer to Friday Harbor weather in January.

October and February in Friday Harbor present a stark contrast in temperature, with October enjoying milder conditions that range from a minimum of 5°C (41°F) to a maximum of 15°C (60°F), while February experiences chillier temperatures, dipping as low as -3°C (27°F) and peaking at 11°C (52°F). Precipitation levels are relatively similar, with October receiving 128 mm (5.1 in) over 15 days, compared to February's 126 mm (5.0 in) over 17 days, indicating a slightly wetter month. Additionally, although both months are characterized by high humidity, October is slightly more humid at 88%, compared to February's 85%. For more specifics on February weather, you can check Friday Harbor weather in February.

When comparing the weather in October and March, October generally presents a milder atmosphere with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 15°C (60°F). In contrast, March tends to be cooler, with average temperatures from a minimum of 2°C (35°F) to a maximum of 12°C (55°F). October also experiences more precipitation, with 128 mm (5.1 in) over 15 days, while March sees less rainfall at 84 mm (3.3 in) across 14 days. Humidity levels are slightly higher in October at 88%, compared to 86% in March. For those interested in specific details about March weather, you can check out Friday Harbor weather in March.

October and April present distinct weather patterns, with October generally being slightly warmer and wetter. In October, temperatures range from a minimum of 5°C (41°F) to a maximum of 15°C (60°F), while April has a narrower range, with temperatures from 4°C (39°F) to 14°C (57°F). Additionally, October experiences significantly more precipitation, with 128 mm (5.1 in) over 15 days compared to April's 65 mm (2.6 in) over 13 days. Humidity levels are also similar, with October at 88% and April at 86%. For a closer look at April weather, visit Friday Harbor weather in April.

In comparing the weather of October and May, one can observe distinct differences in temperature and precipitation patterns. October experiences cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 15°C (60°F), while May typically starts slightly warmer, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 18°C (64°F). Additionally, October sees significantly higher precipitation levels, averaging 128 mm (5.1 in) over 15 days, compared to May, which has only 39 mm (1.5 in) over just 7 days. Finally, humidity levels are higher in October at 88%, compared to 81% in May, further emphasizing the transitional nature of the seasons. For a closer look at the weather specifics for this spring month, check out Friday Harbor weather in May.

October and June present distinct weather patterns characterized by temperature and precipitation variations. In October, temperatures range from a chilly 5°C (41°F) to a mild max of 15°C (60°F), with an average of 11°C (52°F). The month is also quite wet, featuring approximately 128 mm (5.1 in) of precipitation over 15 days and a high humidity level of 88%. In contrast, June offers a warmer climate, with temperatures ranging from 10°C (49°F) to a pleasant maximum of 20°C (69°F), and an average of 13°C (55°F). Precipitation in June is significantly lower, totaling around 32 mm (1.3 in) over just 6 days, along with a slightly lower humidity of 83%. For a closer look at June weather specifics, you can visit Friday Harbor weather in June.

In comparing the weather of October and July, it is evident that October is significantly cooler and wetter. October's temperatures range from a minimum of 5°C (41°F) to a maximum of 15°C (60°F), with an average of 11°C (52°F). In contrast, July enjoys milder temperatures, with a minimum of 11°C (52°F), an average of 14°C (58°F), and a maximum of 20°C (68°F). Additionally, October experiences much higher precipitation, at 128 mm (5.1 in) over approximately 15 days, compared to July's mere 16 mm (0.6 in) across just 3 days. While both months have relatively high humidity levels, October's 88% slightly exceeds July's 84%. For those interested in the specifics of July weather, you can find more details here: Friday Harbor weather in July.

October weather is significantly cooler and wetter compared to August. While October's temperatures range from a minimum of 5°C (41°F) to a maximum of 15°C (60°F), August sees milder temperatures with a minimum of 12°C (55°F) and a maximum of 20°C (69°F). Additionally, October experiences much higher precipitation, averaging 128 mm (5.1 inches) over 15 days, whereas August only receives around 15 mm (0.6 inches) across just 3 days. Humidity levels are also more pronounced in October at 88%, compared to August's 77%. For more details on the summer weather, check out Friday Harbor weather in August.

In comparing the weather between October and September, we see a notable shift towards cooler temperatures and increased precipitation. October features a lower temperature range, with a minimum of 5°C (41°F) and a maximum of 15°C (60°F), compared to September's milder temperatures that range from a minimum of 11°C (51°F) to a maximum of 20°C (68°F). Additionally, October experiences significantly higher rainfall, totaling 128 mm (5.1 in) over 15 days, whereas September sees just 68 mm (2.7 in) over 9 days. The humidity also rises in October at 88%, up from September's 76%, contributing to a more pronounced chill in the air. For a detailed look at September's weather patterns, check out Friday Harbor weather in September.

October presents a slightly warmer climate with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 15°C (60°F). In contrast, November experiences cooler conditions, with average temperatures dropping to a minimum of 4°C (39°F) and a maximum of 13°C (56°F). Precipitation also increases from October's 128 mm (5.1 in) over 15 days to 194 mm (7.6 in) across 19 days in November, indicating a wetter month ahead. Despite the decrease in temperature, humidity remains fairly consistent, with October at 88% and November at 87%. For more details, check out Friday Harbor weather in November.

In October, temperatures typically range from a chilly 5°C (41°F) to a mild 15°C (60°F), with an average around 11°C (52°F). This month sees considerable rainfall, with about 128 mm (5.1 in) of precipitation spread over 15 days, contributing to a high humidity level of 88%. In contrast, December ushers in colder conditions, where temperatures dip as low as -7°C (20°F) and reach a maximum of 12°C (54°F), averaging 7°C (45°F). Despite being colder, December experiences slightly more precipitation at 161 mm (6.3 in) over 18 days, with humidity remaining relatively stable at 87%. For a detailed look at the weather specifics, you can check out Friday Harbor weather in December.

Compare Friday Harbor's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Friday Harbor

As October rolls into Friday Harbor, the weather transforms to signal the onset of fall, bringing cooler temperatures and increased humidity. Characterized by more frequent rains and a notable rise in precipitation days, this month stands apart from the drier summer months. The lush landscapes are rejuvenated, although visitors should be prepared for brisk breezes and the occasional downpour. With an average temperature that dips significantly below that of the preceding months, October offers a refreshing shift for those seeking the charm of autumn. For a deeper understanding of seasonal variations, check out Friday Harbor Climate.