Last updated: June 24, 2025
In December, the average temperature in Greenville, United States hovers around 14°C (57°F). Temperature fluctuations can be quite dramatic, with minima dipping to -3°C (26°F) and maxima reaching 27°C (80°F). Expect around 111 mm (4.4 in) of precipitation spread over 8 days, contributing to an average humidity of a high 88%.
In December in Greenville, the average temperature is 14°C (57°F), with maximums reaching 27°C (80°F) and minimums dropping to as low as -3°C (26°F). This diverse temperature range suggests a need for versatile clothing when traveling, allowing you to enjoy both warm days and cooler evenings.
In Greenville in December, the precipitation amount is 111 mm (4.4 in) spread over 8 days.
In Greenville in December humidity is 88%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and giving a sense of stickiness that can drain your energy quickly while exploring.
In Greenville in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Greenville for better planning.
UV Risk Categories
Weather in Greenville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Greenville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 12°C (54°F) | 70 mm (2.8 inches) | 85% | moderate |
February Weather | 15°C (60°F) | 91 mm (3.6 inches) | 82% | very high |
March Weather | 17°C (64°F) | 48 mm (1.9 inches) | 80% | very high |
April Weather | 20°C (68°F) | 87 mm (3.4 inches) | 76% | very high |
May Weather | 24°C (76°F) | 83 mm (3.3 inches) | 73% | extreme |
June Weather | 26°C (80°F) | 172 mm (6.8 inches) | 74% | extreme |
July Weather | 27°C (81°F) | 181 mm (7.1 inches) | 80% | extreme |
August Weather | 27°C (81°F) | 156 mm (6.1 inches) | 79% | extreme |
September Weather | 26°C (80°F) | 112 mm (4.4 inches) | 83% | very high |
October Weather | 23°C (74°F) | 77 mm (3.0 inches) | 77% | very high |
November Weather | 16°C (61°F) | 53 mm (2.1 inches) | 84% | high |
December Weather | 14°C (57°F) | 111 mm (4.4 inches) | 88% | moderate |