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December Weather in South Amherst, United States

Last updated: June 24, 2025

In December, the average temperature in South Amherst, United States hovers around 2°C (35°F). Expect chilly extremes, with minimums dipping to -18°C (-1°F) and maximums reaching up to 16°C (61°F). During this month, the region experiences 92 mm (3.6 in) of precipitation spread over 12 days, contributing to an average humidity of a slightly damp 86%.

December Temperature in South Amherst

In December in South Amherst, the average temperature is 2°C (35°F). Maximum temperatures can reach 16°C (61°F), while minimums can drop as low as -18°C (-1°F). Travelers should prepare for a wide range of temperatures and dress in layers to ensure comfort during their stay.

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

The chart illustrates December temperature patterns in South Amherst, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Amherst, December typically has an average temperature of 2°C (35°F), with highs reaching up to 16°C (61°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec293239486070757368574235
Data source: Temperature data for South 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 South Amherst

In South Amherst in December, the precipitation amount is 92 mm (3.6 in) over the course of 12 days.

December Precipitation Trends in South Amherst

The chart displays monthly precipitation patterns in South 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 South Amherst, December typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec869799124126129124918610710092
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in South Amherst

In South Amherst in December humidity is 86%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as your clothes cling to you and the cold air cuts through any warmth you try to find.

December Average Humidity in South Amherst

This chart illustrates the average monthly humidity levels in South 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 South Amherst is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in South Amherst

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

Maximum UV Index Levels in South Amherst for December

The chart shows the monthly maximum UV Index (UVI) for South 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 South Amherst typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: South 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 South Amherst Compares to Other Months

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

This table compares monthly weather conditions in South Amherst, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)86 mm (3.4 inches)88%moderate
February Weather0°C (32°F)97 mm (3.8 inches)88%moderate
March Weather4°C (39°F)99 mm (3.9 inches)87%high
April Weather9°C (49°F)124 mm (4.9 inches)87%very high
May Weather16°C (61°F)126 mm (5.0 inches)81%very high
June Weather21°C (70°F)129 mm (5.1 inches)83%very high
July Weather24°C (75°F)124 mm (4.9 inches)82%very high
August Weather23°C (73°F)91 mm (3.6 inches)76%very high
September Weather20°C (68°F)86 mm (3.4 inches)77%very high
October Weather14°C (57°F)107 mm (4.2 inches)82%high
November Weather5°C (42°F)100 mm (3.9 inches)89%moderate
December Weather2°C (35°F)92 mm (3.6 inches)86%low

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