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December Weather in Princeton, Canada

Last updated: June 18, 2025

In December, the average temperature in Princeton, Canada hovers around -4°C (25°F). While the mercury can plummet to a chilling -33°C (-27°F), it may also rise to a mild 9°C (48°F). Expect 114 mm (4.5 in) of precipitation over 16 days, coupled with a high average humidity of 89%. Prepare accordingly for a wintery experience!

December Temperature in Princeton

In December in Princeton, the average temperature is -4°C (25°F), with maximums reaching 9°C (48°F) and minimums plunging as low as -33°C (-27°F). Travelers should be prepared for chilly conditions and dress accordingly for fluctuating temperatures.

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

The chart illustrates December 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, December typically has an average temperature of -4°C (25°F), with highs reaching up to 9°C (48°F) and lows dropping to around -33°C (-27°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.

December Precipitation in Princeton

In Princeton in December, the precipitation amount is 114 mm (4.5 in), occurring over a span of 16 days.

December Precipitation Trends in Princeton

The chart displays monthly precipitation patterns in Princeton, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Princeton, December typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec84886458474420175288124114
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Princeton

In Princeton in December humidity is 89%. With an average temperature of -4°C (25°F), this humidity feels like an intense chill that seeps into your bones, making traveling uncomfortable as you navigate through the damp, cold air.

December Average Humidity in Princeton

This chart illustrates the average monthly humidity levels in Princeton, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Princeton is approximately 89%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Princeton

In Princeton in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Princeton.

Maximum UV Index Levels in Princeton for December

The chart shows the monthly maximum UV Index (UVI) for Princeton in December, 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 December, the maximum UV index in Princeton typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799997521
Data source: Princeton December 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 December 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 December’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 December’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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