Last updated: June 24, 2025
In December, the average temperature in Cape Vincent, United States hovers around -1°C (30°F), with extremes ranging from a brisk -23°C (-9°F) to a mild 13°C (57°F). Expect 97 mm (3.8 in) of precipitation spread over 12 days, contributing to an average humidity of 89%. Whether you're bracing for the cold or enjoying the crisp air, it's essential to be prepared for the varying weather conditions!
In December in Cape Vincent, the average temperature is -1°C (30°F). The maximum can reach 13°C (57°F) and the minimum can be as low as -23°C (-9°F). It's advisable to pack warm clothing and be prepared for a wide range of temperatures while traveling.
In Cape Vincent in December, the precipitation amount is 97 mm (3.8 in) spread over 12 days.
In Cape Vincent in December humidity is 89%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that wraps around you, making outdoor travel uncomfortable and brisk, as the cold air sharpens the dampness, leaving you feeling colder than the thermometer suggests.
In Cape Vincent 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 Cape Vincent, you can visit Hourly UV Index in Cape Vincent.
UV Risk Categories
Weather in Cape Vincent varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Cape Vincent, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 79 mm (3.1 inches) | 93% | low |
| February Weather | -4°C (25°F) | 78 mm (3.1 inches) | 93% | moderate |
| March Weather | 0°C (31°F) | 79 mm (3.1 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 126 mm (5.0 inches) | 82% | very high |
| May Weather | 12°C (54°F) | 98 mm (3.9 inches) | 75% | very high |
| June Weather | 18°C (64°F) | 91 mm (3.6 inches) | 68% | very high |
| July Weather | 22°C (72°F) | 126 mm (5.0 inches) | 69% | very high |
| August Weather | 22°C (71°F) | 96 mm (3.8 inches) | 67% | very high |
| September Weather | 18°C (64°F) | 70 mm (2.8 inches) | 72% | high |
| October Weather | 11°C (53°F) | 154 mm (6.0 inches) | 83% | moderate |
| November Weather | 4°C (39°F) | 114 mm (4.5 inches) | 88% | moderate |
| December Weather | -1°C (30°F) | 97 mm (3.8 inches) | 89% | low |