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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 extremes ranging from a chilly -18°C (0°F) to a pleasantly warm 19°C (67°F). This month brings about 81 mm (3.2 in) of precipitation spread across 8 days, and you'll experience an average humidity of 87%, making it a notably damp period. Prepare accordingly!

December Temperature in Newton

In December in Newton, the average temperature is 3°C (38°F). Maximums can reach 19°C (67°F) and minimums can be as low as -18°C (0°F). Travelers should pack warm clothing and be prepared for a wide range of temperatures.

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 19°C (67°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec323546556776797672594338
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 81 mm (3.2 in) over the course of 8 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 81 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec859312812214210610996691109481
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 87%. With an average temperature of 3°C (38°F), this humidity feels like a chilly blanket wrapped around you, making travel quite uncomfortable as the cold dampness seeps into your clothes and lingers in the air, often leaving you shivering and longing for warmer, drier conditions.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec357911111098643
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 Weather0°C (32°F)85 mm (3.4 inches)84%moderate
February Weather2°C (35°F)93 mm (3.7 inches)82%moderate
March Weather8°C (46°F)128 mm (5.0 inches)84%high
April Weather13°C (55°F)122 mm (4.8 inches)83%very high
May Weather20°C (68°F)142 mm (5.6 inches)80%extreme
June Weather25°C (77°F)106 mm (4.2 inches)83%extreme
July Weather26°C (79°F)109 mm (4.3 inches)82%very high
August Weather24°C (76°F)96 mm (3.8 inches)82%very high
September Weather22°C (72°F)69 mm (2.7 inches)79%very high
October Weather15°C (59°F)110 mm (4.3 inches)79%high
November Weather6°C (43°F)94 mm (3.7 inches)88%moderate
December Weather3°C (38°F)81 mm (3.2 inches)87%moderate

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