Last updated: June 24, 2025
In December, the average temperature in Lowell, United States hovers around 0°C (32°F). However, temperatures can swing dramatically, with a minimum of -28°C (-18°F) and a maximum reaching 16°C (62°F). Visitors should also prepare for 65 mm (2.6 in) of precipitation spread over 11 days, contributing to a notably high average humidity of 86%.
In December in Lowell, the average temperature is 0°C (32°F), with maximums reaching 16°C (62°F) and minimums dropping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures, from chilly days to surprisingly mild weather.
In Lowell in December, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.
In Lowell in December humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.
In Lowell 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 Lowell, you can visit Hourly UV Index in Lowell.
UV Risk Categories
Weather in Lowell varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lowell, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 64 mm (2.5 inches) | 87% | low |
| February Weather | -3°C (27°F) | 68 mm (2.7 inches) | 87% | moderate |
| March Weather | 2°C (37°F) | 65 mm (2.6 inches) | 86% | moderate |
| April Weather | 8°C (46°F) | 86 mm (3.4 inches) | 87% | very high |
| May Weather | 15°C (60°F) | 134 mm (5.3 inches) | 82% | very high |
| June Weather | 21°C (70°F) | 120 mm (4.7 inches) | 81% | very high |
| July Weather | 24°C (75°F) | 68 mm (2.7 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 69 mm (2.7 inches) | 79% | very high |
| September Weather | 18°C (65°F) | 113 mm (4.5 inches) | 79% | high |
| October Weather | 11°C (53°F) | 130 mm (5.1 inches) | 82% | moderate |
| November Weather | 3°C (38°F) | 62 mm (2.4 inches) | 87% | moderate |
| December Weather | 0°C (32°F) | 65 mm (2.6 inches) | 86% | low |