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December Weather in Newton, United States

Last updated: June 24, 2025

In December, the average temperature in Newton, United States hovers around 1°C (34°F). Expect a wide range in temperatures, with a minimum of -20°C (-3°F) and a maximum of 16°C (61°F). This month also brings about 121 mm (4.8 in) of precipitation over approximately 10 days, contributing to an average humidity level of 81%.

December Temperature in Newton

In December in Newton, the average temperature is 1°C (34°F). The maximum can reach 16°C (61°F) and the minimum can be as low as -20°C (-3°F). Be prepared for a range of temperatures and pack accordingly for your trip!

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

The chart illustrates December temperature patterns in Newton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newton, December typically has an average temperature of 1°C (34°F), with highs reaching up to 16°C (61°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec303237475768737366564333
Data source: Temperature data for Newton 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 Newton

In Newton in December, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.

December Precipitation Trends in Newton

The chart displays monthly precipitation patterns in Newton, 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 Newton, December typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7189871318388127707513198121
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Newton

In Newton in December humidity is 81%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill wrapping around you, making traveling uncomfortable as every breath feels heavy and the cold penetration intensifies with the moisture in the air.

December Average Humidity in Newton

This chart illustrates the average monthly humidity levels in Newton, 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 Newton is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Newton

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

Maximum UV Index Levels in Newton for December

The chart shows the monthly maximum UV Index (UVI) for Newton 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 Newton typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2558910997632
Data source: Newton 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 Newton Compares to Other Months

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

This table compares monthly weather conditions in Newton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)71 mm (2.8 inches)86%low
February Weather0°C (32°F)89 mm (3.5 inches)84%moderate
March Weather3°C (37°F)87 mm (3.4 inches)82%moderate
April Weather8°C (47°F)131 mm (5.2 inches)80%very high
May Weather14°C (58°F)83 mm (3.3 inches)72%very high
June Weather20°C (68°F)88 mm (3.5 inches)72%very high
July Weather23°C (73°F)127 mm (5.0 inches)67%very high
August Weather23°C (73°F)70 mm (2.8 inches)66%very high
September Weather19°C (66°F)74 mm (2.9 inches)71%high
October Weather13°C (56°F)131 mm (5.1 inches)78%high
November Weather6°C (43°F)98 mm (3.9 inches)84%moderate
December Weather1°C (34°F)121 mm (4.8 inches)81%low

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