Last updated: June 24, 2025
In December, the average temperature in Shelbyville, United States hovers around 3°C (37°F), with minimum dips reaching -18°C (-1°F) and maximum highs of 19°C (66°F). Expect 10 days of rain, totaling 96 mm (3.8 in), while humidity remains notably high at 87%.
In December in Shelbyville, the average temperature is 3°C (37°F). The maximum can reach 19°C (66°F) and the minimum can be as low as -18°C (-1°F). Travelers should be prepared for a wide temperature range, ensuring they bring both warm clothing for the cold days and lighter layers for the milder afternoons.
In Shelbyville in December, the total precipitation amount is 96 mm (3.8 in) over a span of 10 days.
In Shelbyville in December, humidity is 87%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating proper layers to stay warm while navigating the wet conditions.
In Shelbyville in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Shelbyville, you can check the information here.
UV Risk Categories
Weather in Shelbyville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Shelbyville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 81 mm (3.2 inches) | 87% | moderate |
| February Weather | 1°C (35°F) | 103 mm (4.1 inches) | 85% | moderate |
| March Weather | 6°C (44°F) | 140 mm (5.5 inches) | 86% | high |
| April Weather | 12°C (53°F) | 113 mm (4.4 inches) | 84% | very high |
| May Weather | 18°C (65°F) | 136 mm (5.4 inches) | 79% | very high |
| June Weather | 23°C (73°F) | 114 mm (4.5 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 109 mm (4.3 inches) | 79% | very high |
| August Weather | 23°C (74°F) | 88 mm (3.5 inches) | 70% | very high |
| September Weather | 21°C (70°F) | 78 mm (3.1 inches) | 69% | very high |
| October Weather | 15°C (58°F) | 97 mm (3.8 inches) | 76% | high |
| November Weather | 6°C (43°F) | 97 mm (3.8 inches) | 88% | moderate |
| December Weather | 3°C (37°F) | 96 mm (3.8 inches) | 87% | moderate |