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December Weather in Fermont, Canada

Last updated: June 18, 2025

The average temperature in Fermont, Canada during December hovers around -15°C (6°F), with extremes reaching a chilling -34°C (-29°F) at the minimum and a surprising 7°C (45°F) at the maximum. Expect 74 mm (2.9 in) of precipitation spread over 12 days, accompanied by a high average humidity of 99%, creating a truly wintry atmosphere.

December Temperature in Fermont

In December in Fermont, the average temperature is -15°C (6°F). The maximum can reach 7°C (45°F), while the minimum can dip as low as -34°C (-29°F). Travelers should be prepared for extreme cold and fluctuating temperatures during this time.

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

The chart illustrates December temperature patterns in Fermont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fermont, December typically has an average temperature of -15°C (6°F), with highs reaching up to 7°C (45°F) and lows dropping to around -34°C (-29°F).
JanFebMarAprMayJunJulAugSepOctNovDec-5-4823364958564634195
Data source: Temperature data for Fermont 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 Fermont

In Fermont in December, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

December Precipitation Trends in Fermont

The chart displays monthly precipitation patterns in Fermont, 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 Fermont, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec41395173701121231481161169374
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Fermont

In Fermont in December humidity is 99%. With an average temperature of -15°C (6°F), this humidity feels like an icy blanket wrapping around you, making each breath crisp yet heavy in the frigid air, creating an otherworldly experience for traveling as you navigate through the stunning, frost-covered landscapes.

December Average Humidity in Fermont

This chart illustrates the average monthly humidity levels in Fermont, 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 Fermont is approximately 99%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%92%89%87%84%85%85%88%89%92%97%99%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Fermont

In Fermont 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 Fermont.

Maximum UV Index Levels in Fermont for December

The chart shows the monthly maximum UV Index (UVI) for Fermont 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 Fermont typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec135898776421
Data source: Fermont 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 Fermont Compares to Other Months

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

This table compares monthly weather conditions in Fermont, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-21°C (-5°F)41 mm (1.6 inches)96%low
February Weather-20°C (-4°F)39 mm (1.5 inches)92%moderate
March Weather-13°C (8°F)51 mm (2.0 inches)89%moderate
April Weather-5°C (24°F)73 mm (2.9 inches)87%very high
May Weather2°C (36°F)70 mm (2.8 inches)84%very high
June Weather10°C (49°F)112 mm (4.4 inches)85%very high
July Weather14°C (58°F)122 mm (4.8 inches)85%high
August Weather13°C (57°F)148 mm (5.8 inches)88%high
September Weather8°C (46°F)115 mm (4.5 inches)89%high
October Weather1°C (34°F)115 mm (4.5 inches)92%moderate
November Weather-7°C (19°F)93 mm (3.6 inches)97%low
December Weather-15°C (6°F)74 mm (2.9 inches)99%low

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