December Weather in Saint-Jacques, Canada

Last updated: June 18, 2025

In Saint-Jacques, Canada, the average temperature in December hovers around -6°C (21°F). Expect chilly days where the thermometer may dip as low as -28°C (-17°F) and occasionally reach up to 13°C (56°F). With 88 mm (3.4 in) of precipitation over 11 days, it's a notably damp month, characterized by an average humidity of 89%. Prepare for a brisk and wet winter experience!

December Temperature in Saint-Jacques

In December in Saint-Jacques, the average temperature is -6°C (21°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -28°C (-17°F). Travelers should prepare for a wide range of temperatures, ensuring they pack appropriately for both cold and mild conditions.

December Weather in Saint-Jacques: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint-Jacques, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Jacques, December typically has an average temperature of -6°C (21°F), with highs reaching up to 13°C (56°F) and lows dropping to around -28°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec151827415665716860483221
Data source: Temperature data for Saint-Jacques 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 Saint-Jacques

In Saint-Jacques in December, the precipitation amount is 88 mm (3.4 in) during 11 days, indicating a relatively wet period for the area.

December Precipitation Trends in Saint-Jacques

The chart displays monthly precipitation patterns in Saint-Jacques, 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 Saint-Jacques, December typically receives around 88 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec828284120959084956411911188
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint-Jacques

In Saint-Jacques in December, humidity is 89%. With an average temperature of -6°C (21°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors an arduous task as the cold air mixes with dampness, often leaving you feeling cold and clammy despite layers of clothing.

December Average Humidity in Saint-Jacques

This chart illustrates the average monthly humidity levels in Saint-Jacques, 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 Saint-Jacques is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint-Jacques

In Saint-Jacques 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 Saint-Jacques, you can visit Hourly UV Index in Saint-Jacques.

Maximum UV Index Levels in Saint-Jacques for December

The chart shows the monthly maximum UV Index (UVI) for Saint-Jacques 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 Saint-Jacques typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Saint-Jacques 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 Saint-Jacques Compares to Other Months

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

This table compares monthly weather conditions in Saint-Jacques, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)82 mm (3.2 inches)93%low
February Weather-8°C (18°F)82 mm (3.2 inches)92%moderate
March Weather-3°C (27°F)84 mm (3.3 inches)86%moderate
April Weather5°C (41°F)120 mm (4.7 inches)85%high
May Weather13°C (56°F)95 mm (3.8 inches)80%very high
June Weather18°C (65°F)90 mm (3.5 inches)74%very high
July Weather22°C (71°F)84 mm (3.3 inches)76%very high
August Weather20°C (68°F)95 mm (3.7 inches)75%very high
September Weather15°C (60°F)64 mm (2.5 inches)78%high
October Weather9°C (48°F)119 mm (4.7 inches)86%moderate
November Weather0°C (32°F)110 mm (4.4 inches)88%moderate
December Weather-6°C (21°F)88 mm (3.4 inches)89%low

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