nomadseason

December Weather in Amherst, United States

Last updated: June 24, 2025

In December, the average temperature in Amherst, United States hovers around 2°C (36°F). While you might experience chilly days with minimums dipping to -12°C (10°F), there are warmer highs reaching up to 14°C (58°F). Be prepared for 97 mm (3.8 in) of precipitation spread over about 14 days, and a high average humidity of 86% will keep the air feeling crisp and damp.

December Temperature in Amherst

In December in Amherst, the average temperature is 2°C (36°F), with a maximum that can reach 14°C (58°F) and a minimum as low as -12°C (10°F). Travelers should be prepared for chilly conditions and potential frost, making warm clothing essential for outdoor activities.

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 2°C (36°F), with highs reaching up to 14°C (58°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec303137465869757468584336
Data source: Temperature data for Amherst generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Amherst

In Amherst in December, the total precipitation amount is 97 mm (3.8 in) spread over 14 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 97 mm (3.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec939999121125108116828411811597
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Amherst

In Amherst in December, humidity is 86%. With an average temperature of 2°C (36°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration uncomfortable and dampening any enthusiasm for travel.

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 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
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-1°C (30°F)93 mm (3.7 inches)88%moderate
February Weather0°C (32°F)99 mm (3.9 inches)88%moderate
March Weather3°C (38°F)99 mm (3.9 inches)87%high
April Weather8°C (46°F)121 mm (4.8 inches)87%very high
May Weather14°C (58°F)125 mm (4.9 inches)81%very high
June Weather20°C (69°F)108 mm (4.2 inches)83%very high
July Weather24°C (75°F)115 mm (4.5 inches)82%very high
August Weather23°C (74°F)82 mm (3.2 inches)76%very high
September Weather20°C (69°F)84 mm (3.3 inches)77%very high
October Weather15°C (59°F)118 mm (4.6 inches)82%high
November Weather6°C (43°F)115 mm (4.5 inches)89%moderate
December Weather2°C (36°F)97 mm (3.8 inches)86%low

Compare Amherst's Climate with Cities Worldwide