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December Weather in Newton, United States

Last updated: June 24, 2025

In December, the average temperature in Newton, United States is a chilly -3°C (26°F), with minimums dropping to a brisk -19°C (-2°F) and maximums reaching a mild 11°C (52°F). Expect 47 mm (1.9 in) of precipitation over approximately 10 days, accompanied by high humidity levels of 88%. Be prepared for a cold, damp month!

December Temperature in Newton

In December in Newton, the average temperature is -3°C (26°F). The maximum can reach 11°C (52°F), and the minimum can be as low as -19°C (-2°F). Travelers should be prepared for cold weather and bring appropriate clothing to enjoy their time outdoors.

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 (26°F), with highs reaching up to 11°C (52°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec252938465568767363473726
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 47 mm (1.9 in) over a span 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 47 mm (1.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec56675060431781528364247
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 88%. With an average temperature of -3°C (26°F), this humidity feels like an icy dampness that clings to your skin, making every breath feel colder and more challenging, which can make traveling in these conditions quite uncomfortable.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%84%75%62%56%44%37%46%67%84%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
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-4°C (25°F)56 mm (2.2 inches)91%moderate
February Weather-2°C (29°F)67 mm (2.6 inches)92%moderate
March Weather3°C (38°F)50 mm (2.0 inches)84%high
April Weather8°C (47°F)60 mm (2.4 inches)74%very high
May Weather13°C (56°F)43 mm (1.7 inches)62%very high
June Weather20°C (68°F)17 mm (0.7 inches)56%extreme
July Weather24°C (76°F)8 mm (0.3 inches)44%extreme
August Weather23°C (73°F)15 mm (0.6 inches)37%very high
September Weather17°C (63°F)28 mm (1.1 inches)46%very high
October Weather8°C (48°F)36 mm (1.4 inches)67%high
November Weather3°C (37°F)42 mm (1.6 inches)84%moderate
December Weather-3°C (26°F)47 mm (1.9 inches)88%moderate

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