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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 3°C (38°F), with a minimum of -14°C (7°F) and a maximum reaching up to 23°C (75°F). Expect a precipitation amount of 30 mm (1.2 in) over the span of 3 days, accompanied by an average humidity of 85%. Prepare accordingly for the diverse weather conditions!

December Temperature in Newton

In December in Newton, the average temperature is 3°C (38°F), with maximums reaching 23°C (75°F) and minimums potentially dropping to -14°C (7°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.

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 3°C (38°F), with highs reaching up to 23°C (75°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec333448556677807772574538
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 30 mm (1.2 in) over the course of 3 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 30 mm (1.2 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec3433847617610278128851032730
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 85%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable as you contend with the heavy, cold air surrounding you.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
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 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Newton, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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 Weather1°C (33°F)34 mm (1.4 inches)77%moderate
February Weather1°C (34°F)33 mm (1.3 inches)76%high
March Weather9°C (48°F)84 mm (3.3 inches)71%high
April Weather13°C (55°F)76 mm (3.0 inches)73%very high
May Weather19°C (66°F)176 mm (6.9 inches)83%very high
June Weather25°C (78°F)101 mm (4.0 inches)83%extreme
July Weather27°C (80°F)78 mm (3.1 inches)81%extreme
August Weather25°C (78°F)128 mm (5.0 inches)73%very high
September Weather22°C (73°F)85 mm (3.3 inches)67%very high
October Weather14°C (57°F)103 mm (4.0 inches)72%high
November Weather7°C (45°F)27 mm (1.1 inches)82%moderate
December Weather3°C (38°F)30 mm (1.2 inches)85%moderate

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