Last updated: June 18, 2025
In St. Stephen, Canada, the average temperature in December is a chilly -3°C (26°F). Expect extremes, with minimums plummeting to -23°C (-9°F) and maximums rising to 15°C (59°F). During this month, precipitation amounts to 122 mm (4.8 in) spread over approximately 11 days, coupled with an average humidity of 82%. Stay cozy and prepared for the weather fluctuations!
In December in St. Stephen, the average temperature is -3°C (26°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling to St. Stephen during this month.
In St. Stephen in December, the total precipitation amount is 122 mm (4.8 in) over a span of 11 days.
In St. Stephen in December, humidity is 82%. With an average temperature of -3°C (26°F), this humidity feels like an uncomfortable chill that makes traveling outside feel more biting and penetrating, as the cold damp air clings to your skin, intensifying the cold sensation and making even short excursions feel more daunting.
In St. Stephen 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 St. Stephen, you can visit Hourly UV Index in St. Stephen.
UV Risk Categories
Weather in St. Stephen varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in St. Stephen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 98 mm (3.9 inches) | 83% | low |
| February Weather | -5°C (23°F) | 90 mm (3.5 inches) | 84% | moderate |
| March Weather | -1°C (30°F) | 72 mm (2.8 inches) | 82% | moderate |
| April Weather | 5°C (42°F) | 119 mm (4.7 inches) | 80% | high |
| May Weather | 11°C (53°F) | 107 mm (4.2 inches) | 78% | very high |
| June Weather | 17°C (62°F) | 91 mm (3.6 inches) | 82% | very high |
| July Weather | 20°C (68°F) | 91 mm (3.6 inches) | 84% | very high |
| August Weather | 20°C (68°F) | 76 mm (3.0 inches) | 82% | very high |
| September Weather | 16°C (61°F) | 88 mm (3.5 inches) | 82% | high |
| October Weather | 10°C (50°F) | 109 mm (4.3 inches) | 82% | moderate |
| November Weather | 3°C (37°F) | 136 mm (5.4 inches) | 84% | moderate |
| December Weather | -3°C (26°F) | 122 mm (4.8 inches) | 82% | low |