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October Weather in Princeton, Canada

Last updated: June 18, 2025

In October, the average temperature in Princeton, Canada hovers around 3°C (38°F), providing a chilly atmosphere that can see lows of -13°C (8°F) and highs of 22°C (72°F). Be prepared for some moist conditions as precipitation typically accumulates to 88 mm (3.5 in) over 12 days, accompanied by a notably high average humidity of 88%.

October Temperature in Princeton

In October in Princeton, the average temperature is 3°C (38°F), with maximums reaching 22°C (72°F) and minimums dropping as low as -13°C (8°F). Travelers should be prepared for a wide range of temperatures, making layers essential for a comfortable visit.

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 3°C (38°F), with highs reaching up to 22°C (72°F) and lows dropping to around -13°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec252130374652585850373225
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 88 mm (3.5 in) over a span of 12 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 88 mm (3.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec84886458474420175288124114
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Princeton

In Princeton in October, humidity is 88%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%88%86%82%82%85%77%76%88%88%89%
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 reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, 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 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799997521
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 Weather-4°C (25°F)83 mm (3.3 inches)87%low
February Weather-6°C (21°F)88 mm (3.5 inches)86%moderate
March Weather-1°C (30°F)64 mm (2.5 inches)88%moderate
April Weather3°C (37°F)58 mm (2.3 inches)86%high
May Weather8°C (47°F)47 mm (1.8 inches)82%very high
June Weather11°C (52°F)44 mm (1.7 inches)82%very high
July Weather14°C (58°F)20 mm (0.8 inches)85%very high
August Weather14°C (58°F)17 mm (0.7 inches)77%very high
September Weather10°C (50°F)52 mm (2.1 inches)76%high
October Weather3°C (38°F)88 mm (3.5 inches)88%moderate
November Weather0°C (32°F)124 mm (4.9 inches)88%low
December Weather-4°C (25°F)114 mm (4.5 inches)89%low

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