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December Weather in Amherst, Canada

Last updated: June 18, 2025

In Amherst, Canada, the average temperature in December hovers around -3°C (28°F), with extreme lows reaching -21°C (-6°F) and highs peaking at 16°C (61°F). During this month, residents can expect 105 mm (4.1 in) of precipitation spread over 12 days, contributing to an average humidity of 83%. Ideal for those who enjoy the brisk chill of winter!

December Temperature in Amherst

In December in Amherst, the average temperature is -3°C (28°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -21°C (-6°F). Travelers should be prepared for a wide range of temperatures during this time, ensuring they pack accordingly for both chilly and milder conditions.

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

The chart illustrates December temperature patterns in Amherst, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Amherst, December typically has an average temperature of -3°C (28°F), with highs reaching up to 16°C (61°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec222329404959666759493727
Data source: Temperature data for Amherst 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 Amherst

In Amherst in December, the precipitation amount is 105 mm (4.1 in) over the course of 12 days.

December Precipitation Trends in Amherst

The chart displays monthly precipitation patterns in Amherst, 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 Amherst, December typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec861017894979478789880143105
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Amherst

In Amherst in December humidity is 83%. With an average temperature of -3°C (28°F), this humidity feels like a damp chill that seeps into your bones, making it crucial to bundle up while traveling.

December Average Humidity in Amherst

This chart illustrates the average monthly humidity levels in Amherst, 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 Amherst is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%82%82%82%84%86%85%83%83%85%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Amherst

In Amherst 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 Amherst, you can visit Hourly UV Index in Amherst.

Maximum UV Index Levels in Amherst for December

The chart shows the monthly maximum UV Index (UVI) for Amherst 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 Amherst typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Amherst 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 Amherst Compares to Other Months

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

This table compares monthly weather conditions in Amherst, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)86 mm (3.4 inches)82%low
February Weather-5°C (24°F)101 mm (4.0 inches)83%moderate
March Weather-2°C (29°F)78 mm (3.1 inches)82%moderate
April Weather5°C (41°F)94 mm (3.7 inches)82%high
May Weather10°C (49°F)97 mm (3.8 inches)82%very high
June Weather15°C (60°F)94 mm (3.7 inches)84%very high
July Weather19°C (66°F)78 mm (3.1 inches)86%very high
August Weather19°C (67°F)78 mm (3.1 inches)85%very high
September Weather15°C (60°F)98 mm (3.9 inches)83%high
October Weather9°C (49°F)80 mm (3.2 inches)83%moderate
November Weather3°C (38°F)143 mm (5.6 inches)85%moderate
December Weather-3°C (28°F)105 mm (4.1 inches)83%low

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