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December Weather in Arnprior, Canada

Last updated: June 18, 2025

In December, the average temperature in Arnprior, Canada hovers around -6°C (22°F), with extremes dropping to a chilling -30°C (-21°F) and peaking at a mild 15°C (58°F). Expect 76 mm (3.0 in) of precipitation over approximately 12 days, accompanied by a high average humidity of 89%. Perfect for those who enjoy a truly crisp climate!

December Temperature in Arnprior

In December in Arnprior, the average temperature is -6°C (22°F), with maximums reaching 15°C (58°F) and minimums dropping as low as -30°C (-21°F). Travelers should be prepared for a wide range of temperatures, making appropriate clothing essential for their visit.

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

The chart illustrates December temperature patterns in Arnprior, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arnprior, December typically has an average temperature of -6°C (22°F), with highs reaching up to 15°C (58°F) and lows dropping to around -30°C (-21°F).
JanFebMarAprMayJunJulAugSepOctNovDec161827415564706760483222
Data source: Temperature data for Arnprior 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 Arnprior

In Arnprior in December, the total precipitation amount is 76 mm (3.0 in), occurring over the course of 12 days.

December Precipitation Trends in Arnprior

The chart displays monthly precipitation patterns in Arnprior, 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 Arnprior, December typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec71758011011595107101701259076
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arnprior

In Arnprior in December, humidity is 89%. With an average temperature of -6°C (22°F), this humidity feels like an icy blanket clinging to your skin, making travel uncomfortable and the air feel even colder, as if every breath is laced with frost.

December Average Humidity in Arnprior

This chart illustrates the average monthly humidity levels in Arnprior, 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 Arnprior is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arnprior

In Arnprior in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Arnprior, you can visit Hourly UV Index in Arnprior.

Maximum UV Index Levels in Arnprior for December

The chart shows the monthly maximum UV Index (UVI) for Arnprior 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 Arnprior typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Arnprior 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 Arnprior Compares to Other Months

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

This table compares monthly weather conditions in Arnprior, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)71 mm (2.8 inches)93%low
February Weather-8°C (18°F)75 mm (3.0 inches)93%moderate
March Weather-3°C (28°F)80 mm (3.1 inches)86%moderate
April Weather5°C (42°F)110 mm (4.3 inches)82%very high
May Weather13°C (55°F)115 mm (4.5 inches)75%very high
June Weather18°C (65°F)95 mm (3.7 inches)68%very high
July Weather21°C (71°F)107 mm (4.2 inches)69%very high
August Weather20°C (68°F)101 mm (4.0 inches)67%very high
September Weather15°C (60°F)70 mm (2.8 inches)72%high
October Weather9°C (48°F)125 mm (4.9 inches)83%moderate
November Weather0°C (33°F)90 mm (3.5 inches)88%moderate
December Weather-6°C (22°F)76 mm (3.0 inches)89%low

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