Last updated: June 24, 2025
In December, the average temperature in Aurora, United States hovers around -4°C (26°F). Expect chilly nights with a minimum dropping to -23°C (-10°F), while daytime highs can reach up to 14°C (58°F). During this month, you'll experience about 43 mm (1.7 in) of precipitation over approximately 8 days, and the air will be quite damp with an average humidity of 87%.
In December in Aurora, the average temperature is -4°C (26°F), with maximums reaching up to 14°C (58°F) and minimums plunging as low as -23°C (-10°F). Travelers should pack warmly and be prepared for a wide range of temperatures during their visit.
In Aurora in December, the total precipitation amount is 43 mm (1.7 in) over the course of 8 days.
In Aurora in December humidity is 87%. With average temperature -4°C (26°F), this humidity feels like an icy blanket enveloping you, making outdoor activities challenging and rendering those brisk air moments difficult to bear, as the cold moisture seeps into your clothing and chills you to the bone.
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 | -5°C (24°F) | 45 mm (1.8 inches) | 87% | moderate |
| February Weather | -3°C (27°F) | 54 mm (2.1 inches) | 88% | high |
| March Weather | 1°C (35°F) | 61 mm (2.4 inches) | 77% | very high |
| April Weather | 7°C (45°F) | 48 mm (1.9 inches) | 69% | very high |
| May Weather | 12°C (55°F) | 47 mm (1.9 inches) | 54% | extreme |
| June Weather | 20°C (69°F) | 8 mm (0.3 inches) | 45% | extreme |
| July Weather | 24°C (75°F) | 15 mm (0.6 inches) | 37% | extreme |
| August Weather | 23°C (73°F) | 16 mm (0.6 inches) | 34% | extreme |
| September Weather | 17°C (64°F) | 20 mm (0.8 inches) | 47% | very high |
| October Weather | 8°C (46°F) | 39 mm (1.5 inches) | 67% | high |
| November Weather | 3°C (38°F) | 29 mm (1.2 inches) | 82% | moderate |
| December Weather | -4°C (26°F) | 43 mm (1.7 inches) | 87% | moderate |