Last updated: June 24, 2025
In December, the average temperature in Bath, United States hovers around 0°C (32°F), making it a chilly time of year. Expect minimum temperatures to dip as low as -22°C (-7°F), while highs can reach a mild 16°C (62°F). With an average precipitation of 59 mm (2.3 in) spread over approximately 9 days, you might want to keep an umbrella handy. Additionally, the air carries a noticeable humidity level of 86%, adding to the distinct atmosphere of the season.
In December, in Bath, the average temperature is 0°C (32°F). Maximum temperatures can reach 16°C (62°F), while minimums can drop as low as -22°C (-7°F). Be prepared for a wide range of temperatures when traveling during this time.
In Bath in December, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.
In Bath 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 Bath 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 Bath, you can visit Hourly UV Index in Bath.
UV Risk Categories
Weather in Bath varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bath, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 65 mm (2.6 inches) | 88% | low |
| February Weather | -3°C (27°F) | 68 mm (2.7 inches) | 87% | moderate |
| March Weather | 3°C (37°F) | 68 mm (2.7 inches) | 85% | moderate |
| April Weather | 8°C (47°F) | 89 mm (3.5 inches) | 86% | very high |
| May Weather | 15°C (60°F) | 125 mm (4.9 inches) | 80% | very high |
| June Weather | 21°C (70°F) | 106 mm (4.2 inches) | 80% | very high |
| July Weather | 24°C (75°F) | 82 mm (3.2 inches) | 80% | very high |
| August Weather | 22°C (72°F) | 66 mm (2.6 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 94 mm (3.7 inches) | 80% | high |
| October Weather | 12°C (53°F) | 118 mm (4.6 inches) | 84% | moderate |
| November Weather | 4°C (39°F) | 67 mm (2.6 inches) | 89% | moderate |
| December Weather | 0°C (32°F) | 59 mm (2.3 inches) | 86% | low |