Last updated: February 24, 2025
In October, the weather in Princeton, United States showcases a delightful transition into autumn, with temperatures ranging from a brisk 1°C (34°F) at night to a warm 35°C (96°F) during peak daytime hours, averaging a comfortable 16°C (61°F). This month experiences 121 mm (4.8 in) of rainfall over approximately 10 days, giving the landscape a refreshing vibrancy. With an average humidity level of 74%, the air carries a crisp, invigorating quality, inviting residents and visitors alike to enjoy the season's beauty.
In October, Princeton experiences a notable transition as the summer warmth begins to wane. With minimum temperatures averaging around 1°C (34°F) and maxing out at a pleasant 35°C (96°F), the month offers a gentle coolness that invites outdoor activities and scenic fall foliage. The average temperature settles at 16°C (61°F), striking a balance that is ideal for enjoying the crisp autumn air. This seasonal shift is evident from the preceding months, as October represents a pivot from the highs of summer to the more moderate temperatures, signaling an approach towards winter. The comfortable days and cooler nights make it a delightful time for locals and visitors alike to engage with the rich surroundings, highlighting October as a perfect month for both exploration and relaxation.
October in Princeton, United States, brings a noteworthy average precipitation of 121 mm (4.8 in) over approximately 10 rainy days. This month typically sees a robust uptick in rainfall compared to the preceding September, which only recorded 87 mm with similar rainfall frequency. October often marks a transition into the wetter fall season, with precipitation amounts surpassing most earlier months, except for the peak summer months of July (139 mm) and August (135 mm). This trend underlines October's role as part of a seasonal cycle, as it aligns with a gradual increase in rainfall from late summer through early winter, preparing the landscape for the colder months ahead. The balanced spread of rainy days throughout October also hints at a more varied weather pattern, perfect for the vibrant fall foliage that characterizes the region during this time.
As October settles in Princeton, the humidity typically hovers around 74%, striking a balance between the higher levels of late summer and the sharper drops of late fall. This month sees a slight uptick from September's 68%, reflecting the lingering warmth of autumn while hinting at the coming chill. Typically, humidity levels gradually decrease through the spring and summer months, peaking at a comfortable 69% in June and July before dipping into the lower sixties. With October's humidity being notably higher than the preceding summer months, it serves as a gentle reminder of the transitioning season, setting the stage for November's return to 82%. This trend showcases Princeton's dynamic climate, where shifts in humidity often mirror the changing temperature and seasonal essence.
Throughout the year in Princeton, the UV Index makes significant fluctuations that highlight the changing seasons' effect on sun exposure. As summer peaks, from May to August, the UV Index consistently reaches very high levels of 10 and 9, prompting a burn time of just 15 minutes. Even as the warmth of summer fades, September and October follow closely with high indices of 8 and 6, indicating that sun protection remains essential as fall sets in. These trends reflect a gradual transition from the highs of summer to the milder autumn, where despite cooler temperatures, the risk of UV exposure persists. Before heading outdoors, it’s wise to stay informed about the UV Index, especially in the transitional months. For more details, visit Princeton UV Index.
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In Princeton, October marks a shift in the seasonal sunshine, with 226 hours of daylight illuminating the vibrant fall foliage. While this is a significant dip from the summer peak of 349 hours in July, it still holds its own when compared to the earlier months of the year. The gradual decline from August’s 312 hours reflects the transition to cooler temperatures and shorter days, yet October's brightness remains a delightful complement to the rich autumn landscape. This month stands out not just for its moderate sunshine, but also for the lively outdoor activities it inspires, making it a favored time for residents and visitors alike to enjoy the crisp air and breathtaking scenery.
As October rolls into Princeton, the likelihood of enjoying sunny days drops to 37%, a trend reflective of the transition into the cooler months. This figure is slightly above the summer lows in June and August but significantly lower than the sunny spells found in March and November, which boast 56% and 55% chances respectively. Though October's sun could be elusive, it still offers a glimpse of warmth before winter fully sets in, making it an ideal time for crisp walks amid the beautiful fall foliage.
In Princeton, United States, October heralds a gradual retreat into shorter days, with daylight lasting about 11 hours. This slight decline follows the peak summer months, where June through August bask in a generous 14 hours of sunlight. As autumn settles in, October brings a notable transition, reminiscent of earlier months, as daylight hours dwindle from 14 hours in May down to 11 hours. The gradual decrease in daylight serves as a reminder of nature's cycle, bridging the warmth of summer to the starkness of winter. With November and December both offering only 9 hours of light, October stands as a pivotal month, striking a balance between the lingering warmth of fall and the impending chill of winter’s approach.
As October sweeps into Princeton, the wind begins to whisper through the rustling leaves, averaging 3.0 m/s (7 mph)—a gentle reminder that autumn is in full swing. After the summer's calm with average speeds dwindling to 2.3 m/s (5 mph) in July and August, the winds start to pick up again, reflecting a natural ebb and flow throughout the year. This slight increase carries over from September's 2.9 m/s (7 mph), making October a transitional month where the crisp air invigorates the surroundings. Interestingly, November sees a continuation of this trend with a slight rise to 3.1 m/s (7 mph), suggesting that the cooling temperatures can often stir up a refreshing breeze, enticing both residents and visitors to enjoy the vibrant scenery. The rhythmic shifts in Princeton's wind speed encapsulate the essence of the seasons, painting a vivid picture of the oncoming chill and the beauty of fall.
The weather in Princeton 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 Princeton and find detailed weather information for every month.
October and January present stark contrasts in weather patterns. October boasts a wide temperature range, with minimums of 1°C (34°F) and maximums soaring up to 35°C (96°F), creating an overall average of 16°C (61°F). The month experiences considerable rainfall, with 121 mm (4.8 in) over about 10 days, and a humidity level of 74%. In contrast, January is much colder, with temperatures plunging to a minimum of -17°C (2°F) and an average of just 2°C (35°F), while highs reach only up to 20°C (68°F). Precipitation decreases to 64 mm (2.5 in) over about 8 days, accompanied by a higher humidity of 84%. For more detailed information, check out Princeton weather in January.
When comparing the weather in October and February, the contrasts are striking. October experiences warmer temperatures, with averages around 16°C (61°F) and highs reaching up to 35°C (96°F), while February sees much colder conditions, with average temperatures of only 3°C (38°F) and lows dropping to -16°C (4°F). Precipitation levels are somewhat similar, with October receiving 121 mm over 10 days and February having 109 mm in 11 days, but the humidity in February is slightly higher at 82% compared to October's 74%. For more specific details about February weather, you can check out Princeton weather in February.
Comparing the weather in October and March reveals some stark contrasts. In October, temperatures typically range from a chilly 1°C (34°F) at night to a warm 35°C (96°F) during the day, averaging around 16°C (61°F). The month sees about 121 mm (4.8 in) of precipitation spread over approximately 10 days, with humidity levels sitting at 74%. In contrast, March experiences much colder conditions, with minimum temperatures dropping to -12°C (10°F) and daytime maximums reaching 28°C (83°F), averaging 6°C (43°F). Precipitation is slightly less at 109 mm (4.3 in) over the same number of days, and humidity is higher at 81%. For more specific details about March weather, you can visit Princeton weather in March.
When comparing the weather in October and April, we see notable differences in temperature and precipitation. October generally enjoys milder conditions with average temperatures around 16°C (61°F) and a maximum of 35°C (96°F), while April tends to be cooler, with an average of 12°C (54°F) and highs reaching 31°C (88°F). In terms of precipitation, October sees slightly higher totals with 121 mm (4.8 in) across about 10 rainy days compared to April’s 106 mm (4.2 in) over 12 days. Both months have relatively high humidity, with October at 74% and April at 78%. For more details about April's weather, you can visit Princeton weather in April.
October and May exhibit quite similar temperature ranges, with both months experiencing minimums around 1°C (34°F), average highs of approximately 16-17°C (61-63°F), and maximum temperatures reaching up to 35°C (94-96°F). However, October tends to be slightly wetter, with 121 mm (4.8 in) of precipitation over about 10 days, compared to May's 131 mm (5.1 in) over 13 days. Additionally, humidity levels are higher in October at 74%, while May experiences a more comfortable 69%. For more detailed information about May weather, you can check Princeton weather in May.
When comparing the weather of October and June, notable differences emerge. October experiences a wider temperature range, with minimums dropping to 1°C (34°F) and averages around 16°C (61°F), while June maintains warmer temperatures with a minimum of 9°C (48°F) and an average of 22°C (73°F). Both months see significant rainfall, with October receiving about 121 mm (4.8 in) over 10 days and June slightly less at 100 mm (3.9 in) over 12 days. Humidity is also higher in October at 74%, compared to June's 69%. To explore more about the specifics of June weather, you can check Princeton weather in June.
October and July present quite a contrast in weather conditions. In October, the temperature ranges from a chilly 1°C (34°F) at its lowest to a warm 35°C (96°F) at its peak, with an average of 16°C (61°F). This month also sees significant precipitation, totaling 121 mm (4.8 in) over about 10 days, accompanied by a higher humidity level of 74%. In contrast, July features milder temperatures, with a minimum of 13°C (56°F) and a maximum of 37°C (98°F), averaging 26°C (78°F). It experiences slightly more rainfall than October, at 139 mm (5.5 in) over 14 days, but with lower humidity at 62%. Overall, July tends to be warmer and more humid, while October brings cooler temperatures and a higher chance of rain. For more detailed insights on July weather, visit Princeton weather in July.
When comparing the weather in October and August, we notice significant differences in temperature and precipitation patterns. October experiences cooler temperatures, with a minimum of 1°C (34°F) and an average of 16°C (61°F), whereas August is much warmer, featuring a minimum of 14°C (57°F) and an average of 24°C (76°F). Both months reach a maximum temperature of 35°C (96°F), but October tends to be more variable with higher humidity at 74% compared to August's 65%. Precipitation is also notable, with October receiving 121 mm (4.8 in) over about 10 days, while August sees slightly more, at 135 mm (5.3 in) over 14 days. For more details, you can check out Princeton weather in August.
When comparing the weather in October to that of September, several key differences emerge. October experiences a broader temperature range with minimum temperatures dropping to 1°C (34°F), whereas September's minimum is warmer at 6°C (43°F). The average temperature in October is cooler at 16°C (61°F) compared to September's more comfortable 21°C (70°F). Interestingly, both months have similar maximum temperatures, peaking at 35°C (96°F) in October and 35°C (95°F) in September. However, October tends to be wetter, receiving 121 mm (4.8 in) of precipitation over 10 days, compared to September's 87 mm (3.4 in) with the same number of rainy days. Additionally, October's humidity level is slightly higher at 74%, compared to 68% in September. For more details about September weather, you can visit Princeton weather in September.
October and November exhibit distinct weather patterns, with October experiencing a much wider temperature range, from a chilly minimum of 1°C (34°F) to a scorching maximum of 35°C (96°F). In contrast, November tends to be cooler overall, with temperatures ranging from a low of -9°C (15°F) to a high of 25°C (77°F) and an average temperature of 8°C (46°F). In terms of precipitation, October sees more rain with 121 mm (4.8 in) over 10 days, compared to November's 83 mm (3.3 in) over 9 days. Additionally, November is slightly more humid, with humidity levels reaching 82% compared to October's 74%. For more detailed insights, check Princeton weather in November.
October and December present quite different weather patterns. In October, temperatures range from a mild minimum of 1°C (34°F) to a warm maximum of 35°C (96°F), with an average of 16°C (61°F). The month sees significant rainfall, with 121 mm (4.8 in) over approximately 10 days and humidity averaging around 74%. In contrast, December experiences much colder conditions, with temperatures dropping to a minimum of -12°C (11°F) and an average of only 4°C (39°F), peaking at 19°C (67°F). Precipitation is slightly less at 104 mm (4.1 in), also spread over about 10 days, but humidity increases to 80%. For further details on December weather, you can check Princeton weather in December.
As October unfolds in Princeton, the weather showcases a distinct shift from the warmer months, ushering in a cooler, more comfortable climate. While the highs provide a mild warmth, the evenings can dip significantly, creating a refreshing contrast. With an average humidity of 74% and about 10 days of precipitation scattered throughout the month, this time signals the transition to the wetter fall season. Whether you're enjoying the vibrant autumn foliage or preparing for a cozy indoor retreat, October's unique charm makes it a delightful month to experience in Princeton. For more insights, explore Princeton Climate.