Last updated: June 24, 2025
In December, the average temperature in Marstons Mills, United States hovers around 4°C (39°F). Be prepared for chilly spells, as temperatures can dip to a brisk -13°C (8°F), while highs can reach a mild 16°C (62°F). Expect 121 mm (4.8 in) of precipitation over about 10 days, and with an average humidity of 80%, a cozy umbrella will be your best companion!
In December in Marstons Mills, the average temperature is 4°C (39°F). Maximum temperatures can reach 16°C (62°F), while the minimum can drop as low as -13°C (8°F). Be prepared for a wide range of temperatures and pack accordingly to ensure a comfortable visit.
In Marstons Mills in December, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.
In Marstons Mills in December, humidity is 80%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating through the misty streets.
In Marstons Mills 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 Marstons Mills, you can visit Hourly UV Index in Marstons Mills.
UV Risk Categories
Weather in Marstons Mills varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Marstons Mills, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 86 mm (3.4 inches) | 84% | moderate |
| February Weather | 2°C (36°F) | 103 mm (4.1 inches) | 84% | moderate |
| March Weather | 4°C (39°F) | 112 mm (4.4 inches) | 82% | high |
| April Weather | 8°C (47°F) | 125 mm (4.9 inches) | 79% | very high |
| May Weather | 13°C (56°F) | 102 mm (4.0 inches) | 75% | very high |
| June Weather | 19°C (66°F) | 87 mm (3.4 inches) | 78% | very high |
| July Weather | 23°C (73°F) | 91 mm (3.6 inches) | 76% | very high |
| August Weather | 23°C (73°F) | 78 mm (3.1 inches) | 76% | very high |
| September Weather | 19°C (67°F) | 108 mm (4.2 inches) | 75% | very high |
| October Weather | 15°C (59°F) | 151 mm (5.9 inches) | 75% | high |
| November Weather | 8°C (47°F) | 93 mm (3.7 inches) | 80% | moderate |
| December Weather | 4°C (39°F) | 121 mm (4.8 inches) | 80% | low |