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December Weather in Newport, United States

Last updated: June 24, 2025

In December, the average temperature in Newport, United States hovers around -1°C (31°F), with extremes that can dip to a frigid -19°C (-1°F) and reach a maximum of 15°C (58°F). Visitors should be prepared for notable precipitation, accumulating around 109 mm (4.3 in) over about 16 days, paired with a high average humidity of 96%.

December Temperature in Newport

In December in Newport, the average temperature is -1°C (31°F), with maximums reaching 15°C (58°F) and minimums dropping as low as -19°C (-1°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates December temperature patterns in Newport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newport, December typically has an average temperature of -1°C (31°F), with highs reaching up to 15°C (58°F) and lows dropping to around -19°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec292737445664737260463731
Data source: Temperature data for Newport 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 Newport

In Newport in December, the precipitation amount is 109 mm (4.3 in) spread over 16 days.

December Precipitation Trends in Newport

The chart displays monthly precipitation patterns in Newport, 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 Newport, December typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec1018676745532722447796109
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Newport

In Newport in December, humidity is 96%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, freezing mist that clings to your skin, making it challenging to stay warm while traveling.

December Average Humidity in Newport

This chart illustrates the average monthly humidity levels in Newport, 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 Newport is approximately 96%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%88%83%80%82%71%71%85%90%96%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Newport

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

Maximum UV Index Levels in Newport for December

The chart shows the monthly maximum UV Index (UVI) for Newport 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 Newport typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689997432
Data source: Newport 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 Newport Compares to Other Months

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

This table compares monthly weather conditions in Newport, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)101 mm (4.0 inches)95%low
February Weather-3°C (27°F)86 mm (3.4 inches)93%moderate
March Weather3°C (37°F)76 mm (3.0 inches)91%moderate
April Weather7°C (45°F)74 mm (2.9 inches)88%high
May Weather13°C (56°F)55 mm (2.2 inches)83%very high
June Weather18°C (64°F)32 mm (1.2 inches)80%very high
July Weather23°C (73°F)7 mm (0.3 inches)82%very high
August Weather22°C (72°F)22 mm (0.9 inches)71%very high
September Weather16°C (61°F)44 mm (1.7 inches)71%high
October Weather8°C (46°F)77 mm (3.0 inches)85%moderate
November Weather3°C (37°F)96 mm (3.8 inches)90%moderate
December Weather-1°C (31°F)109 mm (4.3 inches)96%low

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