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October Weather in Princeton, United States

Last updated: June 24, 2025

In October, the average temperature in Princeton, United States hovers around 16°C (61°F), offering a comfortable climate for exploration. Be prepared for a range in temperatures, as it can drop to a chilly -1°C (30°F) at its lowest and soar to a sweltering 35°C (95°F) at its peak. During this month, expect approximately 111 mm (4.4 in) of precipitation spread over about 10 days, contributing to an average humidity level of 79%.

October Temperature in Princeton

In October in Princeton, the average temperature is 16°C (61°F). Maximums can reach 35°C (95°F), and minimums can be as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cool conditions.

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

The chart illustrates October temperature patterns in Princeton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Princeton, October typically has an average temperature of 16°C (61°F), with highs reaching up to 35°C (95°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec353848566877807773614541
Data source: Temperature data for Princeton 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 Princeton

In Princeton in October, the precipitation amount is 111 mm (4.4 in) over a span of 10 days.

October Precipitation Trends in Princeton

The chart displays monthly precipitation patterns in Princeton, 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. In Princeton, October typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9511914611813112473877711193102
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Princeton

In Princeton in October humidity is 79%. With an average temperature of 16°C (61°F), this humidity feels like a warm, moist embrace, making travel a bit more challenging as the air tends to weigh heavily, but it also offers a refreshing atmosphere perfect for exploring local sights and enjoying nature.

October Average Humidity in Princeton

This chart illustrates the average monthly humidity levels in Princeton, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Princeton is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Princeton

In Princeton in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Princeton.

Maximum UV Index Levels in Princeton for October

The chart shows the monthly maximum UV Index (UVI) for Princeton 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. In October, the maximum UV index in Princeton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3571010111099743
Data source: Princeton 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.

How October Weather in Princeton Compares to Other Months

Weather in Princeton varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Princeton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Princeton, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)95 mm (3.7 inches)84%moderate
February Weather3°C (38°F)119 mm (4.7 inches)82%moderate
March Weather9°C (48°F)146 mm (5.7 inches)84%high
April Weather14°C (57°F)118 mm (4.6 inches)83%very high
May Weather20°C (69°F)131 mm (5.2 inches)80%very high
June Weather25°C (77°F)124 mm (4.9 inches)83%extreme
July Weather27°C (80°F)73 mm (2.9 inches)82%very high
August Weather25°C (78°F)87 mm (3.4 inches)82%very high
September Weather23°C (73°F)77 mm (3.0 inches)79%very high
October Weather16°C (61°F)111 mm (4.4 inches)79%high
November Weather7°C (45°F)92 mm (3.6 inches)88%moderate
December Weather5°C (41°F)102 mm (4.0 inches)87%moderate

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