Last updated: June 24, 2025
In Chatsworth, United States, the average temperature in December hovers around 1°C (35°F), showcasing a chill that can plummet to a brisk -22°C (-8°F), yet may occasionally warm up to a pleasant 19°C (66°F). Expect a moderate precipitation amount of 56 mm (2.2 in) over 7 days, with humidity lingering high at an average of 84%. Embrace the unique climate that this month brings!
In December in Chatsworth, the average temperature is 1°C (35°F), with maximums reaching up to 19°C (66°F) and minimums dropping as low as -22°C (-8°F). Travelers should prepare for a wide range of temperatures and pack accordingly for winter conditions.
In Chatsworth in December, the total precipitation amount is 56 mm (2.2 in) over a period of 7 days.
In Chatsworth in December humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.
In Chatsworth 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 Chatsworth, you can visit Hourly UV Index in Chatsworth.
UV Risk Categories
Weather in Chatsworth varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Chatsworth, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (28°F) | 67 mm (2.7 inches) | 82% | moderate |
| February Weather | -1°C (30°F) | 72 mm (2.8 inches) | 83% | moderate |
| March Weather | 5°C (42°F) | 105 mm (4.2 inches) | 84% | high |
| April Weather | 11°C (51°F) | 119 mm (4.7 inches) | 85% | very high |
| May Weather | 18°C (64°F) | 158 mm (6.2 inches) | 79% | very high |
| June Weather | 23°C (74°F) | 108 mm (4.3 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 86 mm (3.4 inches) | 80% | very high |
| August Weather | 23°C (74°F) | 98 mm (3.8 inches) | 81% | very high |
| September Weather | 21°C (70°F) | 78 mm (3.1 inches) | 80% | very high |
| October Weather | 13°C (57°F) | 125 mm (4.9 inches) | 82% | high |
| November Weather | 5°C (41°F) | 63 mm (2.5 inches) | 88% | moderate |
| December Weather | 1°C (35°F) | 56 mm (2.2 inches) | 84% | low |