Last updated: June 24, 2025
In Aurora, United States, the average temperature in December is a chilly 4°C (39°F), with extremes ranging from a biting -16°C (3°F) to a mild 20°C (68°F). Expect about 107 mm (4.2 in) of precipitation over 10 days, contributing to an average humidity level of a muggy 87%. Be prepared for the elements as you explore this unique climate!
In December in Aurora, the average temperature is 4°C (39°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -16°C (3°F). Be prepared for a wide range of temperatures that can enhance your travel experience, so dress in layers and enjoy all that Aurora has to offer!
In Aurora in December, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.
In Aurora in December, humidity is 87%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and gritty, as the air hangs heavy and clings to your skin.
In Aurora 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 Aurora, you can check the information here.
UV Risk Categories
Weather in Aurora varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Aurora, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (33°F) | 83 mm (3.3 inches) | 87% | moderate |
| February Weather | 3°C (37°F) | 112 mm (4.4 inches) | 85% | moderate |
| March Weather | 7°C (46°F) | 138 mm (5.5 inches) | 86% | high |
| April Weather | 12°C (54°F) | 125 mm (4.9 inches) | 84% | very high |
| May Weather | 19°C (66°F) | 126 mm (5.0 inches) | 79% | very high |
| June Weather | 23°C (73°F) | 152 mm (6.0 inches) | 82% | very high |
| July Weather | 25°C (77°F) | 114 mm (4.5 inches) | 79% | very high |
| August Weather | 24°C (75°F) | 107 mm (4.2 inches) | 70% | very high |
| September Weather | 21°C (70°F) | 88 mm (3.5 inches) | 69% | very high |
| October Weather | 15°C (59°F) | 99 mm (3.9 inches) | 76% | high |
| November Weather | 6°C (44°F) | 98 mm (3.9 inches) | 88% | moderate |
| December Weather | 4°C (39°F) | 107 mm (4.2 inches) | 87% | moderate |