Last updated: June 24, 2025
In December, the average temperature in North Boston, United States hovers around 0°C (33°F). Expect a chilly range where the minimum dips to -19°C (-2°F), while the maximum can reach a mild 18°C (65°F). Rain is not uncommon, as 105 mm (4.1 in) of precipitation typically falls over 18 days. With an average humidity of 87%, it’s wise to dress warmly and be prepared for the dampness!
In December in North Boston, the average temperature is 0°C (33°F). Maximum temperatures can reach 18°C (65°F), while the minimum can drop as low as -19°C (-2°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In North Boston in December, the total precipitation amount is 105 mm (4.1 in) over a span of 18 days.
In North Boston in December, humidity is 87%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making every step feel heavier and the air thick and suffocating, often leading to a sense of discomfort while traveling.
In North Boston 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 North Boston, you can visit Hourly UV Index in North Boston.
UV Risk Categories
Weather in North Boston varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in North Boston, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 87 mm (3.4 inches) | 91% | moderate |
| February Weather | -2°C (29°F) | 90 mm (3.5 inches) | 91% | moderate |
| March Weather | 2°C (35°F) | 80 mm (3.2 inches) | 88% | high |
| April Weather | 7°C (45°F) | 119 mm (4.7 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 107 mm (4.2 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 89 mm (3.5 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 127 mm (5.0 inches) | 77% | very high |
| August Weather | 21°C (70°F) | 85 mm (3.3 inches) | 72% | very high |
| September Weather | 18°C (64°F) | 76 mm (3.0 inches) | 76% | very high |
| October Weather | 12°C (54°F) | 134 mm (5.3 inches) | 83% | high |
| November Weather | 4°C (40°F) | 99 mm (3.9 inches) | 88% | moderate |
| December Weather | 0°C (33°F) | 105 mm (4.1 inches) | 87% | low |