Last updated: June 24, 2025
In December, the average temperature in Newport, United States hovers around 4°C (39°F). Expect chilly days, with minimum temperatures plunging to -14°C (7°F) and maximums reaching a mild 19°C (66°F). With 119 mm (4.7 in) of precipitation over 12 days, it's wise to keep an umbrella handy. The average humidity is a high 86%, making the air feel quite damp.
In December in Newport, the average temperature is 4°C (39°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -14°C (7°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm clothing for the chilly nights and lighter layers for the daytime warmth.
In Newport in December, the total precipitation amount is 119 mm (4.7 in), falling over a span of 12 days.
In Newport in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.
In Newport 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 Newport, you can check the information here.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 95 mm (3.7 inches) | 88% | moderate |
| February Weather | 3°C (38°F) | 127 mm (5.0 inches) | 88% | moderate |
| March Weather | 7°C (45°F) | 117 mm (4.6 inches) | 88% | high |
| April Weather | 12°C (54°F) | 151 mm (6.0 inches) | 86% | very high |
| May Weather | 18°C (65°F) | 150 mm (5.9 inches) | 82% | very high |
| June Weather | 22°C (72°F) | 180 mm (7.1 inches) | 84% | very high |
| July Weather | 24°C (76°F) | 134 mm (5.3 inches) | 82% | very high |
| August Weather | 23°C (74°F) | 110 mm (4.3 inches) | 73% | very high |
| September Weather | 21°C (70°F) | 111 mm (4.4 inches) | 73% | very high |
| October Weather | 15°C (59°F) | 117 mm (4.6 inches) | 81% | high |
| November Weather | 7°C (44°F) | 88 mm (3.5 inches) | 89% | moderate |
| December Weather | 4°C (39°F) | 119 mm (4.7 inches) | 86% | moderate |