Last updated: August 21, 2025
October in the USA and Japan showcases a fascinating transition in weather, characterized by a maximum temperature of 29°C (85°F), an average of 19°C (67°F), and a minimum dipping to 10°C (50°F). This month sees a notable precipitation total of 138 mm (5.4 in) spread across approximately 9 days, resulting in a humidity level of 83% that adds a lingering touch to the crisp autumn air. Whether you're enjoying the vibrant fall foliage in the U.S. or experiencing Japan's serene autumn landscapes, October offers a unique blend of warmth and refreshing rain, making it a memorable time for both countries.
As October rolls in, both the USA and Japan experience a delightful transition into autumn, characterized by mild temperatures and crisp air. In the USA, the month ushers in averages of 19°C (67°F), with temperatures peaking at a comfortable 29°C (85°F) during the day. Meanwhile, Japan mirrors this seasonal charm, showcasing an enchanting blend of warmth and coolness, as its versatile climate promotes outdoor explorations and vibrant fall foliage. With minimums around 10°C (50°F), October serves as a gentle reminder of the approaching winter, allowing both nations to revel in the beauty of mid-autumn. This delightful weather creates the perfect backdrop for festivals and harvest celebrations, inviting residents and travelers alike to immerse themselves in the rich cultural tapestries that flourish during this picturesque season.
In October, the United States experiences a notable dip in precipitation, averaging 138 mm (5.4 in) over 9 days of rain, which marks a decrease from the peak summer months. This trend of diminishing rainfall continues from September, reflecting the shift toward drier autumn conditions. Comparatively, Japan's October weather mirrors this pattern, as both regions transition away from the heavier monsoon influences seen in earlier months. The onset of fall prompts a gradual reduction in the number of precipitation days, which is evident when we observe a sharp rise in rainfall days earlier in the year. This evolving precipitation behavior not only influences the landscapes but also sets the stage for the seasonal transformations that define the climatic characteristics of both nations as they approach winter.
As October unfolds, the humidity levels in the United States show a slight decline to 83%, following the peak of summer months. This indicates a gradual transition from the intense humidity of July and August, where levels reached an overwhelming 92% and 91%, respectively. The fall months bring a welcome decrease, yet keep a notable humidity compared to earlier in the year, remaining higher than the winter months where humidity usually stabilizes around the 81% to 79% range. In contrast, Japan experiences a similar trend, marked by high humidity in summer, tapering off to match the comfortable conditions of October. Both regions, thus, reflect a shared rhythm in their climatic shifts, as they move from sweltering summer into the crisp air of autumn.
As October arrives in both the USA and Japan, the UV Index reflects a notable shift as autumn settles in. With a UV Index of 7, categorized as high, sun exposure can pose risks, and the recommended burn time is 25 minutes. This is a decline from the scorching extremes of summer, where UV levels peaked at 12, demanding vigilance with only 10 minutes of safe exposure. However, compared to the higher months, October still calls for caution, as UV levels remain significantly elevated, highlighting the importance of sun protection even in fall. To stay informed and safe, check out the latest updates on the Usa UV Index.
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As October rolls in, both the USA and Japan experience a delightful transition in sunshine hours, boasting 249 hours of sunshine that reflects the lingering warmth of summer. This month mirrors the trend seen throughout the year, where sunshine hours peaked in August with 297 hours, showcasing a vibrant summer glow. Following this peak, a gradual decline occurs, yet October maintains a satisfying brightness, slightly higher than the 233 hours recorded in November. Overall, the patterns reveal a clear summer bounce, followed by a steady tapering as the deepening autumn casts its charming colors, inviting both countries to embrace the beauty of the changing seasons.
As the seasons shift into autumn, October emerges as a standout month for sunny weather in both the USA and Japan, boasting a remarkable 62% chance of sun. This marks a significant increase compared to the preceding months, where the likelihood of clear skies languished in the low percentages—often below 40%. The transition to October not only signifies a departure from the sultry summer but also invites a refreshing change, making it one of the sunniest months of the year. The rise in sunshine is a welcome treat, offering vibrant foliage and ideal conditions for outdoor activities as fall reaches its peak. Thus, October stands out as a prime time to soak in the sun before the chill of winter sets in.
As the year progresses, the daylight duration in the USA and Japan reflects the ebb and flow of the seasons. In October, daylight reaches 11 hours, marking a transition from the long, sunlit days of summer to shorter fall evenings. Following a peak of 14 hours in June and July, the gradual decline begins—first reducing to 13 hours in August, then to 12 hours in September, before settling at 11 hours in October. This trend indicates the onset of autumn, as daylight slowly dwindles toward November's 10 hours. The annual rhythm of daylight serves as a reminder of nature's cyclical changes, leading us towards the cozy, darker months of winter ahead.
As October unfolds, the wind whispering through the landscapes of the USA and Japan reaches an average speed of 2.2 m/s (5 mph), a gentle breeze that complements the cooling temperatures. This month marks a noteworthy decline since the windy days of spring, where average speeds hovered closer to 3.0 m/s. In fact, October continues a trend seen throughout the warmer months, as wind speeds gradually decreased from the brisker conditions of earlier in the year. Looking back, the strongest winds emerge in spring—notably in February with 3.6 m/s—before tapering off by fall. As the weather transitions, this calming October wind serves as a reminder of the serene beauty of autumn, inviting moments of reflection amidst shifting seasons.
Weather in Usa varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Usa, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present starkly contrasting weather conditions. In October, temperatures range from a mild 10°C (50°F) at night to a warm 29°C (85°F) during the day, with an average of 19°C (67°F) and high humidity at 83%. This month also sees substantial rain, with about 138 mm (5.4 in) of precipitation spread over 9 days. In sharp contrast, January experiences colder temperatures, with lows dipping to -4°C (25°F) and an average of only 6°C (42°F), peaking at 16°C (61°F). Additionally, January is significantly drier, with just 52 mm (2.0 in) of rainfall occurring over 6 days and lower humidity levels at 75%. For more insights on January weather, you can visit Usa weather in January.
October and February present strikingly different weather patterns. October boasts an average temperature of 19°C (67°F), with highs reaching 29°C (85°F) and a relatively high humidity of 83%. It's a transitional month, marked by frequent rainfall, totaling about 138 mm over approximately 9 days. In contrast, February is much colder, with an average temperature of just 6°C (44°F). While it can reach up to 20°C (68°F), the lows plummet to -4°C (26°F). February experiences less precipitation overall, at 71 mm over about 10 days, coupled with lower humidity at 71%. For more detailed information, check out Usa weather in February.
In October, the weather is generally warmer, with temperatures ranging from a minimum of 10°C (50°F) to a pleasant average of 19°C (67°F) and a maximum of 29°C (85°F). The month experiences high humidity at 83% and notable rainfall, averaging 138 mm (5.4 in) over about 9 days. In contrast, March presents cooler temperatures, with a minimum of 2°C (36°F) and a modest average of 11°C (51°F), peaking at 21°C (71°F). This month sees slightly less precipitation at 122 mm (4.8 in) across roughly 12 days and lower humidity levels at 71%. For more detailed information on weather patterns, you can check Usa weather in March.
When comparing October and April weather, it's clear that October tends to be warmer, with average temperatures ranging from 10°C (50°F) to a maximum of 29°C (85°F), while April sees cooler temperatures, averaging between 5°C (41°F) and 25°C (78°F). Both months experience a similar number of rainy days, with precipitation recorded on 9 days in each month; however, October has slightly higher rainfall at 138 mm (5.4 in) compared to April's 114 mm (4.5 in). Humidity is also a bit elevated in October at 83%, compared to April’s 78%. For more insights on weather trends in April, you can visit Usa weather in April.
October and May offer somewhat similar temperature ranges, with October experiencing a minimum of 10°C (50°F) and an average of 19°C (67°F), while May has a slightly lower minimum of 9°C (48°F) and an average of 20°C (68°F). The maximum temperatures are comparable, with October peaking at 29°C (85°F) and May reaching 30°C (86°F). However, May tends to be wetter, with a total precipitation of 156 mm (6.2 in) over 11 days, compared to October's 138 mm (5.4 in) over 9 days. Humidity levels are quite similar as well, with October at 83% and May slightly higher at 84%. For more detailed weather patterns, check out Usa weather in May.
In comparing the weather of October and June, October presents a cooler climate with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), while June features warmer conditions with temperatures between 16°C (61°F) and 31°C (87°F). October experiences more frequent but lighter rainfall, accumulating 138 mm (5.4 inches) over approximately 9 days, as opposed to June, which records higher precipitation at 194 mm (7.6 inches) over about 14 days. Humidity levels are fairly similar, with June slightly higher at 86% compared to October's 83%. For a detailed look at weather patterns, you can refer to this link: Usa weather in June.
In comparing the weather between October and July, October presents a cooler climate with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F) and an average of 19°C (67°F). In contrast, July features significantly warmer conditions with temperatures varying from a minimum of 19°C (67°F) to a peak of 34°C (93°F) and an average of 27°C (80°F). Additionally, July experiences more rainfall, accumulating 329 mm (13.0 in) over 19 days, compared to October's 138 mm (5.4 in) across just 9 days. Humidity levels are slightly higher in July at 92% versus 83% in October. For a deeper understanding of July weather trends, you can visit Usa weather in July.
October and August present quite different weather patterns. In August, temperatures are typically warmer, with a minimum of 20°C (68°F) and an average of 28°C (83°F), peaking at 35°C (95°F). The month experiences higher humidity at 91% and more precipitation, with 224 mm (8.8 in) falling over 14 days. In contrast, October sees cooler temperatures, with a minimum of 10°C (50°F) and an average of 19°C (67°F), culminating in a maximum of 29°C (85°F). Although October has slightly lower humidity at 83%, it also brings a notable amount of rainfall, totaling 138 mm (5.4 in) over 9 days. For a more detailed look at weather patterns, you can visit Usa weather in August.
In comparing the weather of October and September, October tends to be cooler overall, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), whereas September boasts warmer averages, with minimums of 16°C (62°F) and maximums reaching up to 33°C (91°F). Precipitation is also slightly lower in October, with 138 mm (5.4 in) falling over 9 days compared to September's 173 mm (6.8 in) over 15 days. Despite October having a slightly lower humidity level of 83% compared to September's 84%, both months exhibit a fairly humid climate. For more detailed insights, check out Usa weather in September.
In October, the weather is generally warmer with minimum temperatures around 10°C (50°F) and average highs reaching up to 29°C (85°F). This month experiences significant rainfall, totaling 138 mm (5.4 in) across 9 days, and the humidity is fairly high at 83%. In contrast, November sees a noticeable drop in temperatures, with minimums plummeting to 4°C (40°F) and an average maximum of 26°C (79°F). Additionally, November is much drier, with only 47 mm (1.9 in) of precipitation over 6 days and slightly lower humidity at 81%. For a deeper dive into November weather conditions, you can visit Usa weather in November.
In October, the weather is typically warm, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F) and an average of 19°C (67°F). The month experiences significant rainfall, totaling 138 mm (5.4 in) over about 9 days, while humidity levels remain high at 83%. In contrast, December brings a much cooler climate, with temperatures dropping to a minimum of -1°C (31°F) and an average of 8°C (46°F), peaking at 21°C (71°F). Precipitation is lower in December, at 59 mm (2.3 in) over 8 days, and humidity decreases slightly to 79%. For more details, you can check Usa weather in December.
As October unfolds in the USA, the weather takes on a distinct character compared to the sweltering summer months. Temperatures cool down significantly, with pleasant averages inviting outdoor activities, while nights hint at the chill of approaching winter. With a higher humidity level and occasional rainfall, this month brings a refreshing contrast to the drier spells earlier in the year. The vibrant autumn foliage adds to the allure, making it an ideal time for exploration. For a deeper understanding of seasonal shifts, check out Usa Climate.