October Weather in Washington, United States

Last updated: February 24, 2025

October in Washington, United States, showcases a dynamic climate that transitions from warm to cool. With maximum temperatures soaring up to 36°C (97°F), coupled with an average of 17°C (62°F), residents can experience a wide range of thermal sensations, making layered clothing a staple. However, as temperatures dip to a minimum of 1°C (34°F), the crispness of autumn sets in. This month also brings 104 mm (4.1 in) of precipitation over 9 days, contributing to a notably high humidity level of 81%. As the season shifts, October encapsulates the beauty and variability of Washington’s weather, inviting both exploration and preparation for winter’s approach.

October Temperature in Washington

As the crisp autumn air settles in October, temperatures in Washington, United States, showcase a notable transition. The month experiences a minimum of 1°C (34°F), hinting at the encroaching chill of winter, while the average climbs to a comfortable 17°C (62°F)—perfect for enjoying the vibrant fall foliage. Daytime highs can still reach a summery 36°C (97°F), a remnant of the fading warmth from September. This contrast illustrates how early autumn still embraces warmth, yet begins to hint at the cooler months ahead. The gradual dip from summer’s peak leaves residents savoring mild afternoons and brisk evenings, making October a delightful blend of both warmth and the anticipation of winter's approach.

October Weather in Washington: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Washington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec374146566675807772624740
Data source: Temperature data for Washington generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Washington

In Washington, October marks a transition into the wetter months, with precipitation reaching 104 mm (4.1 in), a slight increase compared to September's 95 mm. This uptick occurs over 9 rainy days, indicating that while the downpours are frequent, they don’t usually dominate the month. Traditionally, October’s rain begins to set the stage for the heavy precipitation of winter, as seen in the progressive monthly increase since the drier summer months like July and August. With the fall foliage still vibrant, many residents appreciate October's blend of crisp air and the gentle patter of rain, reminding us that the Pacific Northwest is in the throes of change.

October Precipitation Trends in Washington

The chart displays monthly precipitation patterns in Washington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec619887100127118157140951058193
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Washington

As October settles in Washington, the humidity levels experience a slight increase, averaging around 81%. This marks a resurgence from the drier summer months, where humidity dropped to its lowest at 72% in August. Following a gradual decrease through the summer, the September humidity of 75% hints at the impending autumn transition. October’s humidity is reminiscent of the spring months, such as April's 81%, showcasing a seasonal shift that prepares the region for the cooler, wetter months ahead. As the landscape transforms with fall foliage, residents can expect a dampening atmosphere that lingers into November, which sees a further rise to 85%, rekindling the more humid conditions typical of winter.

October Average Humidity in Washington

This chart illustrates the average monthly humidity levels in Washington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Washington

As October arrives in Washington, the UV Index begins to taper off from the intense summer months, presenting a moderate risk for sun exposure. With a UV Index of 7, the exposure category is classified as high, indicating a burn time of approximately 25 minutes for those sensitive to sunlight. This trend continues the gradual decline from the very high UV levels experienced in the peak summer months, yet caution is still advised, especially during midday hours. As the days grow shorter and the leaves change color, it’s essential to remain aware of UV exposure to protect your skin while enjoying the beautiful fall scenery. For more information on UV levels throughout the year, visit Washington UV Index.

Maximum UV Index Levels in Washington for October

The chart shows the monthly maximum UV Index (UVI) for Washington 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.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Washington 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 Washington

In October, Washington experiences a delightful transition as the days grow shorter and the autumn leaves burst into color, yet the sunshine still graces the region with an impressive 246 hours of daylight. This marks a slowdown from the sunniest months of July and June, which boast a vibrant 356 and 330 hours, respectively. Interestingly, the gradual decline in sunlight begins as summer yields to fall, with October capturing more sunshine than the preceding September with its 277 hours. Despite the diminishing daylight, October remains a month of ample sunshine, encapsulating the essence of autumn as nature prepares for the approaching winter.

Monthly Sunshine Duration in Washington: October Highlighted

The October sunshine duration represents the total number of hours Washington 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.
JanFebMarAprMayJunJulAugSepOctNovDec150h180h259h259h281h330h356h321h277h246h226h191h
Data source: Washington October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Washington During October

In Washington, United States, the likelihood of sunny weather sees some intriguing fluctuations throughout the year. October captures the essence of this variability, with a 39% chance of sunshine, which is slightly above the mid-year months like June and August. The trend indicates that as the year wanes, the chances of sun tend to rise, peaking in November at 56%. This suggests that while October may not be the sunniest month, it offers a brief transition into brighter days as fall unfolds. Overall, Washington's weather reveals a tapestry of seasonal change, each month bringing its own surprises in the quest for sunshine.

Percentage of Sunny Days in October in Washington

The chart illustrates the percentage of sunny days in Washington 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 Washington experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%28%53%48%40%38%49%34%53%40%56%37%
Data source: Washington October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Washington in October

As October rolls in, Washington experiences a noticeable shift in daylight duration, with the sun gracing the sky for approximately 11 hours each day. This marks a slight decline from the long, sun-drenched days of summer, where up to 14 hours of daylight illuminated the landscape. Following the slow descent that begins in August, October's daylight mirrors the gradual waning of summer's warmth, giving way to the crispness of autumn. As the month progresses, the daylight diminishes further, foreshadowing the shorter days of November and December. This transitional phase captures the essence of fall, where the vibrant hues of changing leaves set the backdrop for shorter, yet still delightful, sunlit hours.

Average Daylight Hours in Washington for October

The chart illustrates the variation in daylight duration in Washington throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 46m10h 44m11h 58m13h 14m14h 18m14h 50m14h 32m13h 36m12h 23m11h 7m10h 1m9h 28m
Data source: Washington daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Washington

As October rolls in, Washington, United States experiences a gentle shift in its winds, with an average speed of 2.8 m/s (6 mph). This marks a subtle increase from the languid summer months, where the winds slowed to their lowest at 1.9 m/s (4 mph) in August. The cool, crisp air of fall begins to weave through the city, maintaining a comfortable breeze that is reminiscent of spring's earlier gusts. Interestingly, the wind speeds see a gradual recovery as the year progresses, with October’s numbers aligning closely with those of both November and December, which hover around 2.9 m/s and 2.8 m/s respectively. This transition signals the approach of winter, while still inviting residents to experience the vibrant fall sights amidst the playful autumn winds.

Average October Wind Speed in Washington

The chart displays monthly wind speed patterns in Washington, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.23.33.32.82.52.21.92.62.8 m/s2.92.8
Data source: Washington October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Washington Compares to Other Months

The weather in Washington 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 Washington and find detailed weather information for every month.

In October, temperatures can vary significantly, ranging from a chilly minimum of 1°C (34°F) to a warm maximum of 36°C (97°F), with an average of 17°C (62°F). The month experiences about 104 mm (4.1 in) of precipitation, falling over approximately 9 days, and the humidity hovers around 81%. In stark contrast, January brings much colder weather, with temperatures plummeting to a minimum of -15°C (5°F) and averaging only 3°C (37°F), peaking at 22°C (71°F). This month has less rainfall, totaling 61 mm (2.4 in) over about 8 days, but slightly higher humidity at 84%. For a more detailed look at January weather in Washington, you can visit Washington weather in January.

When comparing the weather in October and February, it's clear that the two months present contrasting climates. October offers a milder temperature range with minimums around 1°C (34°F) and maximums reaching up to 36°C (97°F), while February features much colder temperatures, dipping down to a minimum of -16°C (4°F) and averaging just 5°C (41°F). Precipitation levels are similar, with October receiving 104 mm (4.1 in) over about 9 days, whereas February sees slightly less at 98 mm (3.9 in) across 11 days. Both months exhibit high humidity levels, around 81% in October and slightly higher at 83% in February. For a more detailed look at February weather, you can check Washington weather in February.

In October, temperatures range significantly from a chilly minimum of 1°C (34°F) to a warm maximum of 36°C (97°F), with an average of 17°C (62°F). Precipitation is relatively high at 104 mm (4.1 in) over about 9 days, and the humidity hovers around 81%. In contrast, March experiences cooler conditions, where temperatures can dip to a minimum of -7°C (20°F) and reach a maximum of 28°C (83°F), averaging 8°C (46°F). Although it has slightly less precipitation at 87 mm (3.4 in) across 10 days, the humidity is marginally higher at 83%. For more detailed information, you can check Washington weather in March.

When comparing the weather in October and April, both months exhibit a notable range in temperatures and precipitation. October sees a wider temperature span, with a minimum of 1°C (34°F) and maximum reaching up to a sweltering 36°C (97°F), while April's temperatures dip slightly lower, starting at -2°C (28°F) and peaking at 32°C (91°F). Additionally, both months experience similar average precipitation levels, with October bringing 104 mm (4.1 in) over 9 days and April slightly trailing with 100 mm (4.0 in) over 11 days. Humidity remains constant at 81% in both months, providing a moist atmosphere throughout. For further insights on April weather, you can visit Washington weather in April.

When comparing the weather in October to that of May, we see some notable differences. October features a wider temperature range, with a minimum of 1°C (34°F) and a maximum of 36°C (97°F), while May typically experiences milder temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 34°C (94°F). Precipitation is more frequent in May, with about 127 mm (5.0 in) over 13 days compared to October's 104 mm (4.1 in) over 9 days. Humidity levels are relatively high in both months, but October is slightly more humid at 81%, compared to May's 78%. For more detailed insights into May weather, you can refer to this link: Washington weather in May.

In comparing the weather of October and June, October presents a cooler climate with temperatures ranging from a minimum of 1°C (34°F) to an average of 17°C (62°F), while June enjoys milder conditions with temperatures starting at a minimum of 9°C (48°F) and an average high of 24°C (75°F). Both months can reach similar maximum temperatures, peaking at 36°C (97°F in October and 98°F in June). However, October experiences slightly higher precipitation levels at 104 mm (4.1 in) over about 9 days, compared to June's 118 mm (4.7 in) across 12 days. Humidity levels are comparable, with October at 81% and June slightly lower at 79%. For a detailed look at the weather specifics, you can check Washington weather in June.

In comparing the weather in October and July, we can see notable differences in temperature and precipitation. October experiences a much lower range of temperatures, with a minimum of 1°C (34°F) and a maximum of 36°C (97°F), alongside an average of 17°C (62°F). In contrast, July tends to be warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 38°C (101°F), and an average of 27°C (81°F). Precipitation is also a factor: October has 104 mm (4.1 in) over 9 days, whereas July sees higher rainfall at 157 mm (6.2 in) during 12 days, though the humidity is slightly lower in July at 74%, compared to October’s 81%. For more detailed insights, check out Washington weather in July.

In comparing the weather between August and October, a notable difference in temperature and precipitation emerges. October experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 17°C (62°F), while August is significantly warmer, showcasing a minimum of 14°C (58°F) and an average of 25°C (77°F). Additionally, October tends to have more variability in its temperature, reaching a maximum of 36°C (97°F), compared to August’s peak of 37°C (99°F). On the precipitation front, October records 104 mm (4.1 in) over 9 days, whereas August sees higher rainfall amounts at 140 mm (5.5 in) spread across 15 days. Humidity is also higher in October at 81%, compared to 72% in August. For more detailed insights, see Washington weather in August.

In comparing the weather of October and September, October generally sees a more pronounced range in temperatures, with a minimum of 1°C (34°F) compared to September's minimum of 5°C (42°F). While both months can reach a maximum of 36°C (97°F), October's average temperature dips to 17°C (62°F), notably cooler than September's warmer average of 22°C (72°F). Precipitation levels in October are slightly higher, with 104 mm (4.1 in) over 9 days, compared to September's 95 mm (3.8 in) over 11 days. Additionally, October tends to be more humid, with humidity levels at 81%, as opposed to September's 75%. For more detailed information, visit Washington weather in September.

October and November present a notable shift in weather patterns. In October, temperatures fluctuate significantly, with a minimum of 1°C (34°F), an average of 17°C (62°F), and a maximum of 36°C (97°F), along with higher humidity levels averaging 81%. Precipitation is also relatively high, totaling 104 mm (4.1 in) over about 9 days. In contrast, November sees cooler conditions, with a minimum dropping to -6°C (21°F), an average of 8°C (47°F), and a maximum of 25°C (78°F). While precipitation decreases to 81 mm (3.2 in) over 7 days, humidity rises slightly to an average of 85%. This shift marks a transition to a cooler, wetter late autumn climate. For more detailed weather insights, check Washington weather in November.

October and December present notably different weather experiences. In October, temperatures range from a minimum of 1°C (34°F) to a warm maximum of 36°C (97°F), averaging around 17°C (62°F). This month also sees significant rainfall, with 104 mm (4.1 in) of precipitation occurring across 9 days, all while maintaining a humidity level of 81%. In contrast, December brings a chillier atmosphere, with temperatures dropping to a minimum of -10°C (13°F) and averaging around 5°C (41°F), peaking at a milder 20°C (69°F). Precipitation slightly decreases to 93 mm (3.7 in) over the same number of rainy days, accompanied by a marginally higher humidity level of 84%. For more detailed insights, check out Washington weather in December.

Compare Washington's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Washington

As October unfolds in Washington, D.C., the city's weather presents a striking transition from the warmer summer months. With an average temperature that dips significantly, residents can expect cooler days with highs reaching a maximum of 36°C and chilly nights that can drop as low as 1°C. This shift not only brings a welcome respite from the summer heat but also ushers in increased humidity and occasional rainfall, averaging around 104 mm over just nine days. The picturesque autumn scenery is complemented by these changes, making October a unique time to experience the charm of the capital. For a deeper dive into Washington's diverse climate patterns, explore Washington Climate.