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December Weather in Newton, United States

Last updated: June 24, 2025

In Newton, United States, the average temperature in December hovers around 12°C (55°F). However, visitors should be prepared for a broad range of temperatures, with minimums dipping to -4°C (24°F) and maximums soaring up to 27°C (81°F). Expect some rain as well, with 139 mm (5.5 in) of precipitation spread over approximately 10 days. Additionally, average humidity is on the higher side at 86%, creating a lush and vibrant atmosphere.

December Temperature in Newton

In December in Newton, the average temperature is 12°C (55°F), with maximums reaching up to 27°C (81°F) and minimums dropping as low as -4°C (24°F). Be prepared for a wide range of temperatures if you're planning to travel during this time!

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 12°C (55°F), with highs reaching up to 27°C (81°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec525862667579818179725954
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 total precipitation amount is 139 mm (5.5 in) accumulated over 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 139 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec96113831111091241301531138546139
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 86%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%86%
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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Newton for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
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 Weather11°C (52°F)96 mm (3.8 inches)83%moderate
February Weather14°C (58°F)113 mm (4.5 inches)82%very high
March Weather17°C (62°F)83 mm (3.3 inches)79%very high
April Weather19°C (67°F)111 mm (4.4 inches)77%extreme
May Weather24°C (75°F)109 mm (4.3 inches)74%extreme
June Weather26°C (79°F)124 mm (4.9 inches)70%extreme
July Weather27°C (81°F)130 mm (5.1 inches)78%extreme
August Weather27°C (81°F)153 mm (6.0 inches)78%extreme
September Weather26°C (79°F)113 mm (4.4 inches)79%very high
October Weather22°C (72°F)84 mm (3.3 inches)74%very high
November Weather15°C (59°F)46 mm (1.8 inches)83%high
December Weather12°C (55°F)139 mm (5.5 inches)86%moderate

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