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December Weather in Marystown, Canada

Last updated: June 18, 2025

During December in Marystown, Canada, the average temperature hovers around 1°C (33°F). Expect chilly conditions, with minimum temperatures dipping as low as -9°C (15°F) and occasionally reaching up to 14°C (57°F). Be prepared for around 157 mm (6.2 in) of precipitation spread across roughly 16 days, coupled with a high average humidity of 81%.

December Temperature in Marystown

In December in Marystown, the average temperature is 1°C (33°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -9°C (15°F). Be sure to pack warm clothing if you're planning to visit during this time.

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

The chart illustrates December temperature patterns in Marystown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marystown, December typically has an average temperature of 1°C (33°F), with highs reaching up to 14°C (57°F) and lows dropping to around -9°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec282629364250596357484133
Data source: Temperature data for Marystown 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 Marystown

In Marystown in December, the total precipitation amount is 157 mm (6.2 in) spread over 16 days.

December Precipitation Trends in Marystown

The chart displays monthly precipitation patterns in Marystown, 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 Marystown, December typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec109114126110948811484109110140157
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Marystown

In Marystown in December humidity is 81%. With an average temperature of 1°C (33°F), this humidity feels like a biting chill that clings to your skin, making every step outside feel damp and uncomfortable for traveling.

December Average Humidity in Marystown

This chart illustrates the average monthly humidity levels in Marystown, 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 Marystown is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%84%85%86%88%91%93%92%88%84%82%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Marystown

In Marystown 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 Marystown.

Maximum UV Index Levels in Marystown for December

The chart shows the monthly maximum UV Index (UVI) for Marystown 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 Marystown typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789886431
Data source: Marystown 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 Marystown Compares to Other Months

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

This table compares monthly weather conditions in Marystown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)109 mm (4.3 inches)83%low
February Weather-4°C (26°F)114 mm (4.5 inches)84%moderate
March Weather-2°C (29°F)126 mm (5.0 inches)85%moderate
April Weather2°C (37°F)110 mm (4.3 inches)86%high
May Weather5°C (42°F)94 mm (3.7 inches)88%very high
June Weather10°C (51°F)88 mm (3.5 inches)91%very high
July Weather15°C (59°F)114 mm (4.5 inches)93%very high
August Weather17°C (64°F)84 mm (3.3 inches)92%very high
September Weather14°C (58°F)108 mm (4.3 inches)88%high
October Weather9°C (49°F)110 mm (4.3 inches)84%moderate
November Weather5°C (41°F)140 mm (5.5 inches)82%moderate
December Weather1°C (33°F)157 mm (6.2 inches)81%low

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