Last updated: June 24, 2025
In December, the average temperature in Fair Haven, United States hovers around -1°C (30°F). However, be prepared for a wide range, with minimums dipping to -19°C (-2°F) and maximums rising to 17°C (62°F). Residents can expect 108 mm (4.3 in) of precipitation spread over 18 days, contributing to an average humidity of 86%—making it a chillier and wetter month overall.
In December in Fair Haven, the average temperature is -1°C (30°F), with maximums reaching 17°C (62°F) and minimums plunging as low as -19°C (-2°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Fair Haven in December, the precipitation amount is 108 mm (4.3 in) spread over the course of 18 days.
In Fair Haven in December, humidity is 86%. With an average temperature of -1°C (30°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel much colder and more uncomfortable than the temperature suggests.
In Fair Haven 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 Fair Haven, you can visit Hourly UV Index in Fair Haven.
UV Risk Categories
Weather in Fair Haven varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Fair Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 96 mm (3.8 inches) | 90% | moderate |
| February Weather | -3°C (27°F) | 100 mm (3.9 inches) | 90% | moderate |
| March Weather | 1°C (33°F) | 94 mm (3.7 inches) | 87% | high |
| April Weather | 7°C (45°F) | 127 mm (5.0 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 134 mm (5.3 inches) | 82% | very high |
| June Weather | 19°C (66°F) | 107 mm (4.2 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 175 mm (6.9 inches) | 78% | very high |
| August Weather | 21°C (69°F) | 126 mm (5.0 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 99 mm (3.9 inches) | 78% | very high |
| October Weather | 11°C (53°F) | 163 mm (6.4 inches) | 84% | high |
| November Weather | 3°C (38°F) | 109 mm (4.3 inches) | 89% | moderate |
| December Weather | -1°C (30°F) | 108 mm (4.3 inches) | 86% | low |