Last updated: June 24, 2025
In December, the average temperature in Troy, United States hovers around -3°C (27°F). Temperatures can range from a chilly -26°C (-14°F) at their lowest to a more moderate 11°C (52°F) at their peak. Expect wet weather, with an average precipitation of 143 mm (5.6 in) spread over 18 days, resulting in a high average humidity of 96% that keeps the air crisp and cool.
In December in Troy, the average temperature is -3°C (27°F), with maximums reaching 11°C (52°F) and minimums plummeting as low as -26°C (-14°F). It's advisable to pack warm clothing and be prepared for cold weather if you're planning to visit during this time.
In Troy in December, the total precipitation amount is 143 mm (5.6 in) recorded over a span of 18 days.
In Troy in December humidity is 96%. With an average temperature of -3°C (27°F), this humidity feels like a biting cold that penetrates your clothes, making travel uncomfortable as the dampness clings to your skin and leaves you feeling chilled to the bone.
In Troy 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 Troy, you can visit Hourly UV Index in Troy.
UV Risk Categories
Weather in Troy varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Troy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 108 mm (4.2 inches) | 95% | low |
| February Weather | -6°C (21°F) | 123 mm (4.8 inches) | 93% | moderate |
| March Weather | 0°C (32°F) | 90 mm (3.5 inches) | 91% | high |
| April Weather | 4°C (40°F) | 88 mm (3.5 inches) | 88% | high |
| May Weather | 11°C (52°F) | 73 mm (2.9 inches) | 83% | very high |
| June Weather | 15°C (59°F) | 49 mm (1.9 inches) | 80% | very high |
| July Weather | 20°C (68°F) | 13 mm (0.5 inches) | 82% | very high |
| August Weather | 19°C (67°F) | 24 mm (1.0 inches) | 71% | very high |
| September Weather | 13°C (56°F) | 50 mm (2.0 inches) | 71% | high |
| October Weather | 5°C (42°F) | 109 mm (4.3 inches) | 85% | moderate |
| November Weather | 0°C (33°F) | 132 mm (5.2 inches) | 90% | moderate |
| December Weather | -3°C (27°F) | 143 mm (5.6 inches) | 96% | low |