Last updated: June 24, 2025
In December, the average temperature in Graniteville, United States hovers around -5°C (23°F). Expect chilly conditions, with a minimum plunge of -28°C (-19°F) and a maximum reaching up to 13°C (56°F). On average, 86 mm (3.4 in) of precipitation falls over 14 days, accompanied by a high humidity level of 89%. Be prepared for a crisp and damp climate!
In December in Graniteville, the average temperature is -5°C (23°F). Maximums can reach 13°C (56°F) and minimums can be as low as -28°C (-19°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.
In Graniteville in December, the precipitation amount is 86 mm (3.4 in) over the course of 14 days.
In Graniteville in December, humidity is 89%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities uncomfortable and prompting frequent breaks to warm up indoors.
In Graniteville 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 Graniteville, you can visit Hourly UV Index in Graniteville.
UV Risk Categories
Weather in Graniteville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Graniteville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 79 mm (3.1 inches) | 93% | low |
| February Weather | -6°C (21°F) | 81 mm (3.2 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 74 mm (2.9 inches) | 86% | moderate |
| April Weather | 5°C (42°F) | 118 mm (4.6 inches) | 85% | very high |
| May Weather | 12°C (54°F) | 100 mm (4.0 inches) | 80% | very high |
| June Weather | 17°C (63°F) | 108 mm (4.3 inches) | 74% | very high |
| July Weather | 20°C (68°F) | 136 mm (5.3 inches) | 76% | very high |
| August Weather | 19°C (66°F) | 99 mm (3.9 inches) | 75% | very high |
| September Weather | 15°C (59°F) | 72 mm (2.8 inches) | 78% | high |
| October Weather | 9°C (48°F) | 145 mm (5.7 inches) | 86% | moderate |
| November Weather | 0°C (33°F) | 107 mm (4.2 inches) | 88% | moderate |
| December Weather | -5°C (23°F) | 86 mm (3.4 inches) | 89% | low |