Last updated: February 24, 2025
October in Philadelphia heralds a transition into crisp autumn weather, with a maximum temperature of 26°C (80°F), cooling down to an average of 11°C (52°F) and dipping to a brisk minimum of -3°C (26°F) at times. This month witnesses significant precipitation, averaging 160 mm (6.3 in) over 14 days, contributing to the season’s vibrant foliage. With humidity levels hovering around 83%, the air feels moist, enhancing the cozy ambiance of this charming city. As fall unfolds, locals and visitors alike can indulge in the seasonal allure of Philadelphia, marked by both its colorful landscapes and rich cultural offerings.
In October, Philadelphia begins to shed the warmth of summer, as temperatures shift towards a cooler autumn. The average temperature settles at a crisp 11°C (52°F), with morning lows dipping to around -3°C (26°F) and daytime highs reaching a pleasant 26°C (80°F). This month showcases a balance between lingering warmth and the encroaching chill of winter, making it a perfect time for outdoor activities amidst the vibrant foliage. As we transition into November, the city braces for colder days ahead, but October offers a delightful respite, inviting both locals and visitors to enjoy the beautiful fall landscape.
October marks a significant shift in Philadelphia's precipitation patterns, with the city experiencing 160 mm (6.3 in) of rain over 14 days. This makes it the wettest month of the year, surpassing even the summer peak in July. The increase in rainfall is notable compared to September's drier conditions, where only 75 mm fell over just 9 days. As autumn progresses, the city's landscapes transform, nourished by this abundant moisture, setting the stage for vibrant fall foliage. This trend emphasizes October's role as a transitional month, bridging the warmth of summer with the chill of winter while delivering essential rainfall to the region.
In October, Philadelphia experiences a notable shift in humidity levels, with an average of 83%. This increase from the summer months—where humidity dipped to around 67% in August—signals the onset of fall as the air begins to cool and moisture returns to the atmosphere. Although October's humidity is lower than the peak winter months, consistently above 80%, it reflects a trend of rising moisture levels as the city transitions into the cooler seasons. As the month progresses, residents can expect a refreshing crispness in the air, accompanied by the rich scents of autumn foliage and the anticipation of winter's approach.
As October rolls into Philadelphia, the UV Index settles at a moderate level of 5, a notable drop from the very high levels experienced during the summer months. This change means that while protective measures are still advisable, the risk of harm from unprotected sun exposure increases after about 30 minutes. Following a trend of decreasing UV exposure through the fall, Philadelphia residents can enjoy the crisp autumn air while being mindful of their skin's safety. It's a reminder that even as temperatures cool, UV rays remain a factor; thus, keeping an eye on the daily forecast is key. For more detailed information, check out the Philadelphia UV Index.
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As October unfolds in Philadelphia, it brings a delightful 194 hours of sunshine, a notable shift from the sun-drenched peaks of summer, particularly July's striking 339 hours. This month marks a transition, as daylight begins to wane, yet its sunshine remains vibrant, outshining November's 149 hours. While the year starts slowly, with just 107 hours in January, there's a steady climb through spring and summer, showcasing a clear trend of increasing daylight that peaks mid-year. By October, the sunshine begins to retreat, hinting at the coziness of autumn days, where the gentle warmth of sunlight can still be felt amidst the vibrant fall foliage.
In Philadelphia, October enjoys a 32% chance of sunny weather, making it one of the more unpredictable months as fall sets in. This percentage is notably higher than the winter months of January and December, where the chances drop to a mere 24% and 23%, respectively. As summer transitions to autumn, the likelihood of sunny days shifts, peaking in the spring with March at 46% and descending through the summer. Interestingly, October's sun probability is closely aligned with September and November, both hovering around the 40% mark. Overall, while October doesn’t guarantee bright blue skies, it offers a refreshing break from the dreariness typical of winter, hinting at the bittersweet beauty of change that characterizes the season.
As October unfolds in Philadelphia, the city experiences a notable shift in daylight duration, averaging 10 hours of sunlight each day. This decrease marks a significant transition from the summer months, where residents enjoyed up to 15 hours of daylight in June and July. The gradual decline begins in August and continues through September, highlighting the onset of autumn. While the daylight hours are shorter, October's crisp air and vibrant foliage create a picturesque backdrop, inviting residents to embrace the seasonal change. The cycle of daylight is a reminder of nature's rhythm, as the city prepares for the shorter days that follow in November and December, eventually dropping to just 8 hours by the year’s end.
As October sweeps into Philadelphia, the wind begins to whisper tales of autumn with an average speed of 3.0 m/s (7 mph). This month shows a slight dip from the brisker breezes of March, where winds peaked at 4.0 m/s (9 mph), signaling the transitional nature of fall. Despite the cooler temperatures, October’s winds remain steady, echoing the gentle currents felt in the preceding September and the following November. This consistency at 7 mph invites locals to enjoy the vibrant foliage, as light gusts rustle leaves and introduce a refreshing crispness to the air. Thus, October serves as a bridge, balancing the departing warmth of summer with the cooler embrace of winter, all while maintaining a delightful dance of wind that enhances the city’s autumnal charm.
The weather in Philadelphia 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 Philadelphia and find detailed weather information for every month.
In October, the weather is characterized by a wide temperature range, with minimums dropping to -3°C (26°F) and maximums reaching up to 26°C (80°F), resulting in an average of 11°C (52°F). This month also sees frequent precipitation, with around 160 mm (6.3 in) falling over approximately 14 days, alongside a relatively high humidity of 83%. In contrast, January brings far colder conditions, with minimum temperatures plummeting to -33°C (-27°F) and maximums typically around 14°C (58°F), leading to an overall average of -6°C (22°F). Although January has less precipitation at 86 mm (3.4 in) over 12 days, the humidity rises to 93%, contributing to the chill in the air. For more detailed information, you can check Philadelphia weather in January.
October and February present stark contrasts in weather conditions. October features a more moderate temperature range, with averages around 11°C (52°F) and maximums reaching as high as 26°C (80°F), while February struggles with much colder conditions, with average temperatures of -4°C (25°F) and lows plummeting to -27°C (-16°F). The precipitation in October is significantly higher at 160 mm (6.3 in) over 14 days, compared to February's 84 mm (3.3 in) across 12 days. Despite February's slightly higher humidity at 93%, October's humidity levels of 83% still contribute to a damp environment. For more detailed insights, you can visit Philadelphia weather in February.
In comparing the weather of October and March, we see significant differences in temperature and precipitation patterns. October experiences milder average temperatures, ranging from a minimum of -3°C (26°F) to a maximum of 26°C (80°F), while March features colder conditions with a minimum of -22°C (-7°F) and a maximum of 21°C (70°F). Additionally, October brings more precipitation, totaling 160 mm (6.3 in) over 14 days, compared to March’s 88 mm (3.5 in) over 12 days. Humidity levels are relatively high in both months, with October at 83% and March slightly lower at 86%. For more detailed insights into March weather, you can check Philadelphia weather in March.
In comparing the weather of October and April, we observe notable differences in temperature and precipitation patterns. October features a broader temperature range, with minimums around -3°C (26°F) and maximums reaching up to 26°C (80°F), resulting in an average of approximately 11°C (52°F). In contrast, April tends to start cooler, with minimums dropping to -7°C (19°F) and averages around 7°C (44°F), but can spike to a maximum of 30°C (86°F). While both months experience about 14 days of precipitation, October receives a bit more rainfall, totaling 160 mm (6.3 in) versus April's 130 mm (5.1 in). Humidity levels are fairly comparable, with October at 83% and April slightly lower at 82%. For those interested in a more detailed look, you can check Philadelphia weather in April.
October and May present notable contrasts in weather patterns. In October, temperatures range from a chilly minimum of -3°C (26°F) to a warm maximum of 26°C (80°F), with an average of 11°C (52°F). This month also sees significant rainfall, totaling around 160 mm (6.3 in) across 14 days, coupled with high humidity levels at 83%. In contrast, May enjoys milder temperatures, with a minimum of -2°C (29°F) and a maximum soaring to 32°C (90°F), resulting in a pleasant average of 14°C (57°F). Rainfall is less intense during this month, totaling 104 mm (4.1 in) over 13 days, and humidity is lower at 75%. For those interested in further details, you can check Philadelphia weather in May.
October and June present quite different weather experiences. October features cooler temperatures, ranging from a minimum of -3°C (26°F) to a maximum of 26°C (80°F), with an average of 11°C (52°F). It also tends to be wetter, with precipitation reaching 160 mm (6.3 in) over 14 days and higher humidity at 83%. In contrast, June enjoys warmer temperatures, with a minimum of 3°C (38°F) and a maximum of 32°C (90°F), averaging 19°C (66°F). June is also drier, with 104 mm (4.1 in) of rain over 13 days and lower humidity at 68%. For more detailed insights, you can check out Philadelphia weather in June.
In comparing the weather of October and July, we observe notable differences in temperature and humidity levels. October experiences a broader temperature range, from a chilly minimum of -3°C (26°F) to a pleasant maximum of 26°C (80°F), with an average of 11°C (52°F). In contrast, July boasts much warmer temperatures, with a minimum of 9°C (49°F), an average of 22°C (72°F), and a maximum that can reach up to 35°C (95°F). Precipitation is slightly higher in October, totaling 160 mm (6.3 in) over 14 days, compared to July's 137 mm (5.4 in) over the same number of days. Additionally, October's humidity level stands at a relatively high 83%, while July is more comfortable at 69%. For more details about July's weather, you can visit Philadelphia weather in July.
October and August show significant differences in weather patterns. In August, temperatures are generally warmer, with a minimum of 7°C (44°F) and an average of 21°C (70°F), peaking at a maximum of 31°C (89°F). In contrast, October experiences cooler temperatures, with a minimum of -3°C (26°F) and an average of 11°C (52°F), reaching a maximum of 26°C (80°F). Additionally, October sees more precipitation, totaling 160 mm (6.3 in) over 14 days, compared to August's 106 mm (4.2 in) over the same number of days. The humidity level in October is also higher at 83%, while August maintains a lower humidity of 67%. For more detailed insights, you can check Philadelphia weather in August.
October weather shows a distinct shift compared to September, with lower average temperatures and a notable increase in precipitation. The minimum temperature in October drops to -3°C (26°F), while September maintains a milder minimum of 0°C (33°F). Average temperatures in October are significantly cooler at 11°C (52°F) compared to September's warmer average of 17°C (62°F). Additionally, October experiences almost double the precipitation, with 160 mm (6.3 in) over 14 days, compared to just 75 mm (3.0 in) on 9 days in September. Humidity levels also rise in October to 83%, compared to September's 72%. For more detailed information, you can visit Philadelphia weather in September.
In October, the weather showcases a wider temperature range, with lows around -3°C (26°F) and highs peaking at 26°C (80°F), accompanied by an average temperature of 11°C (52°F). This month experiences significant rainfall, totaling 160 mm (6.3 in) over 14 days, resulting in a humidity level of 83%. In contrast, November brings cooler conditions, with temperatures ranging from a minimum of -15°C (6°F) to a maximum of 22°C (73°F) and an average of just 3°C (37°F). Despite receiving slightly less precipitation at 119 mm (4.7 in) over the same number of rainy days, November experiences a higher humidity level of 88%. For more detailed information, you can check Philadelphia weather in November.
October and December present stark contrasts in weather conditions. In October, temperatures can vary significantly, with a minimum of -3°C (26°F) and an average of 11°C (52°F), reaching a high of 26°C (80°F). The month experiences relatively high precipitation levels, totaling 160 mm (6.3 in) over 14 days, and an average humidity of 83%. In contrast, December plunges into much colder temperatures, with a minimum of -27°C (-17°F) and an average of -2°C (28°F), while the maximum reaches only 16°C (61°F). Precipitation decreases to 98 mm (3.8 in) over 13 days, accompanied by a slight increase in humidity at 89%. For a detailed look at winter conditions, you can explore Philadelphia weather in December.
October in Philadelphia ushers in a crisp transition from the warmth of summer to the cool embrace of autumn. With temperatures averaging around 11°C (52°F) and the potential to reach a pleasant 26°C (80°F), the month offers a delightful mix of mild days and chilly nights. As foliage begins to transform into vibrant fall hues, precipitation becomes more frequent with about 14 rainy days, contributing to a humidity level of 83% that enhances the season's freshness. This shift in weather not only sets the stage for scenic fall strolls but also prepares the city for the upcoming winter chill. For a detailed overview of what to expect throughout the year, check out Philadelphia Climate.