Last updated: June 24, 2025
In Newport, United States, the average temperature in December hovers around 2°C (36°F). Expect a frosty minimum of -25°C (-13°F), while the mercury can rise to a pleasant 18°C (65°F) on warmer days. Be prepared for 64 mm (2.5 in) of precipitation spread across 9 days, and note that the average humidity is a chilly 87%.
In December in Newport, the average temperature is 2°C (36°F). The maximum can reach 18°C (65°F), and the minimum can be as low as -25°C (-13°F). It's advisable to prepare for a wide range of temperatures when traveling during this time.
In Newport in December, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.
In Newport in December, humidity is 87%. With an average temperature of 2°C (36°F), this humidity feels like an unwelcome chill that seeps into your bones, making outdoor exploration feel damp and heavy, and encouraging travelers to seek the warmth of indoor attractions instead.
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 | -2°C (30°F) | 79 mm (3.1 inches) | 84% | moderate |
| February Weather | 0°C (32°F) | 80 mm (3.1 inches) | 82% | moderate |
| March Weather | 6°C (43°F) | 113 mm (4.4 inches) | 84% | high |
| April Weather | 11°C (52°F) | 107 mm (4.2 inches) | 83% | very high |
| May Weather | 18°C (65°F) | 148 mm (5.8 inches) | 80% | very high |
| June Weather | 24°C (75°F) | 104 mm (4.1 inches) | 83% | extreme |
| July Weather | 25°C (78°F) | 100 mm (3.9 inches) | 82% | very high |
| August Weather | 24°C (75°F) | 111 mm (4.4 inches) | 82% | very high |
| September Weather | 21°C (71°F) | 68 mm (2.7 inches) | 79% | very high |
| October Weather | 14°C (58°F) | 126 mm (4.9 inches) | 79% | high |
| November Weather | 5°C (42°F) | 81 mm (3.2 inches) | 88% | moderate |
| December Weather | 2°C (36°F) | 64 mm (2.5 inches) | 87% | moderate |