Last updated: June 24, 2025
In December, the average temperature in Shelby, United States hovers around -1°C (31°F). However, be prepared for extremes: temperatures can plunge to a chilling -23°C (-9°F) or soar to a surprising 21°C (71°F). With an average humidity of 83%, expect a damp atmosphere, accompanied by 37 mm (1.4 in) of precipitation spread over 3 days.
In December in Shelby, the average temperature is -1°C (31°F), with maximums reaching 21°C (71°F) and minimums dropping as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling during this month.
In Shelby in December, the precipitation amount is 37 mm (1.4 in) over a span of 3 days.
In Shelby in December humidity is 83%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, icy blanket enveloping you, making each step outside feel like a struggle against the cold, damp air that clings to your skin, often leaving you wishing for warmth and refuge indoors.
In Shelby 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 Shelby, you can visit Hourly UV Index in Shelby.
UV Risk Categories
Weather in Shelby varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Shelby, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 30 mm (1.2 inches) | 76% | moderate |
| February Weather | -4°C (25°F) | 35 mm (1.4 inches) | 80% | moderate |
| March Weather | 5°C (40°F) | 88 mm (3.5 inches) | 73% | high |
| April Weather | 10°C (50°F) | 59 mm (2.3 inches) | 74% | very high |
| May Weather | 17°C (62°F) | 157 mm (6.2 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 116 mm (4.6 inches) | 82% | very high |
| July Weather | 25°C (77°F) | 68 mm (2.7 inches) | 83% | very high |
| August Weather | 23°C (74°F) | 110 mm (4.3 inches) | 80% | very high |
| September Weather | 20°C (69°F) | 93 mm (3.7 inches) | 75% | very high |
| October Weather | 11°C (52°F) | 126 mm (4.9 inches) | 75% | high |
| November Weather | 4°C (39°F) | 33 mm (1.3 inches) | 82% | moderate |
| December Weather | -1°C (31°F) | 37 mm (1.4 inches) | 83% | low |