Last updated: June 24, 2025
In West Chicago, United States, the average temperature in December hovers around 0°C (32°F). Expect minimum temperatures to drop as low as -22°C (-7°F), while highs can reach up to 19°C (67°F). During this month, you can anticipate approximately 53 mm (2.1 in) of precipitation spread over 7 days, coupled with an average humidity of 84%.
In December in West Chicago, the average temperature is 0°C (32°F). Maximums can reach 19°C (67°F) and minimums can be as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold conditions.
In West Chicago in December, the total precipitation amount is 53 mm (2.1 in) spread over a period of 7 days.
In West Chicago in December, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.
In West Chicago 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 West Chicago, you can visit Hourly UV Index in West Chicago.
UV Risk Categories
Weather in West Chicago varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Chicago, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 61 mm (2.4 inches) | 82% | moderate |
| February Weather | -3°C (27°F) | 59 mm (2.3 inches) | 83% | moderate |
| March Weather | 4°C (39°F) | 81 mm (3.2 inches) | 84% | high |
| April Weather | 9°C (48°F) | 117 mm (4.6 inches) | 85% | very high |
| May Weather | 16°C (61°F) | 168 mm (6.6 inches) | 79% | very high |
| June Weather | 22°C (72°F) | 140 mm (5.5 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 106 mm (4.2 inches) | 80% | very high |
| August Weather | 22°C (73°F) | 99 mm (3.9 inches) | 81% | very high |
| September Weather | 19°C (67°F) | 91 mm (3.6 inches) | 80% | very high |
| October Weather | 12°C (54°F) | 127 mm (5.0 inches) | 82% | high |
| November Weather | 3°C (38°F) | 54 mm (2.1 inches) | 88% | moderate |
| December Weather | 0°C (32°F) | 53 mm (2.1 inches) | 84% | low |