Last updated: June 24, 2025
In Colton, United States, the average temperature in December hovers around -4°C (26°F). Expect chills with minimums plunging to -24°C (-12°F), while the mildest days can reach up to 15°C (60°F). During this month, the area sees around 37 mm (1.5 in) of precipitation spread over 4 days, and with an average humidity of 83%, it's a time when the atmosphere feels particularly crisp and cold.
In December in Colton, the average temperature is -4°C (26°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -24°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their visit.
In Colton in December, the precipitation amount is 37 mm (1.5 in) over the course of 4 days.
In Colton in December, humidity is 83%. With an average temperature of -4°C (26°F), this humidity feels like a chilling blanket that clings to your skin, making outdoor activities uncomfortable and forcing travelers to bundle up tightly, even as the cold penetrates through layers of clothing.
In Colton 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 Colton, you can visit Hourly UV Index in Colton.
UV Risk Categories
Weather in Colton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Colton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 20 mm (0.8 inches) | 80% | low |
| February Weather | -7°C (19°F) | 22 mm (0.9 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 63 mm (2.5 inches) | 75% | moderate |
| April Weather | 6°C (44°F) | 78 mm (3.1 inches) | 79% | very high |
| May Weather | 15°C (58°F) | 119 mm (4.7 inches) | 74% | very high |
| June Weather | 22°C (72°F) | 79 mm (3.1 inches) | 81% | extreme |
| July Weather | 24°C (75°F) | 88 mm (3.5 inches) | 82% | very high |
| August Weather | 22°C (71°F) | 104 mm (4.1 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 106 mm (4.2 inches) | 75% | very high |
| October Weather | 8°C (48°F) | 76 mm (3.0 inches) | 77% | moderate |
| November Weather | 1°C (34°F) | 26 mm (1.0 inches) | 85% | moderate |
| December Weather | -4°C (26°F) | 37 mm (1.5 inches) | 83% | low |