Last updated: June 24, 2025
In December, the average temperature in West Swanzey, United States hovers around -1°C (30°F), but be prepared for a range that can dip to a brisk -23°C (-10°F) or rise to a balmy 16°C (62°F). Expect 117 mm (4.6 in) of precipitation spread over 9 days, with an average humidity of 81%.
In December in West Swanzey, the average temperature is -1°C (30°F). The maximum can reach 16°C (62°F) and the minimum can be as low as -23°C (-10°F). Travelers should be prepared for fluctuations in temperature and dress in layers to stay comfortable during their visit.
In West Swanzey in December, the total precipitation amount is 117 mm (4.6 in) spread over a period of 9 days.
In West Swanzey in December, humidity is 81%. With an average temperature of -1°C (30°F), this humidity feels like an extra layer of chill settles in, making travel uncomfortable and the cold air cling to your skin, dampening the experience with every breath.
In West Swanzey 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 West Swanzey, you can visit Hourly UV Index in West Swanzey.
UV Risk Categories
Weather in West Swanzey varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Swanzey, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 74 mm (2.9 inches) | 86% | moderate |
| February Weather | -2°C (29°F) | 86 mm (3.4 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 79 mm (3.1 inches) | 82% | high |
| April Weather | 8°C (46°F) | 124 mm (4.9 inches) | 80% | very high |
| May Weather | 14°C (58°F) | 84 mm (3.3 inches) | 72% | very high |
| June Weather | 20°C (68°F) | 75 mm (3.0 inches) | 72% | very high |
| July Weather | 23°C (73°F) | 123 mm (4.9 inches) | 67% | very high |
| August Weather | 22°C (71°F) | 83 mm (3.3 inches) | 66% | very high |
| September Weather | 18°C (64°F) | 83 mm (3.3 inches) | 71% | high |
| October Weather | 11°C (53°F) | 133 mm (5.3 inches) | 78% | high |
| November Weather | 4°C (39°F) | 100 mm (3.9 inches) | 84% | moderate |
| December Weather | -1°C (30°F) | 117 mm (4.6 inches) | 81% | low |