Last updated: June 24, 2025
In December, the average temperature in Clayton, United States hovers around -1°C (30°F), with a chilly minimum plunging to -23°C (-9°F) and a potential maximum reaching 14°C (58°F). Expect 98 mm (3.8 in) of precipitation spread over 13 days, contributing to an average humidity of 89%. Stay warm and prepared for wet conditions!
In December in Clayton, the average temperature is -1°C (30°F), with maximums reaching 14°C (58°F) and minimums plunging as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling to Clayton during this time.
In Clayton in December, the precipitation amount is 98 mm (3.8 in) spread over 13 days.
In Clayton in December humidity is 89%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that wraps around you, making outdoor travel uncomfortable and brisk, as the cold air sharpens the dampness, leaving you feeling colder than the thermometer suggests.
In Clayton 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 Clayton, you can visit Hourly UV Index in Clayton.
UV Risk Categories
Weather in Clayton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Clayton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 82 mm (3.2 inches) | 93% | low |
| February Weather | -4°C (25°F) | 80 mm (3.2 inches) | 93% | moderate |
| March Weather | 0°C (32°F) | 83 mm (3.2 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 127 mm (5.0 inches) | 82% | very high |
| May Weather | 13°C (55°F) | 100 mm (3.9 inches) | 75% | very high |
| June Weather | 18°C (65°F) | 94 mm (3.7 inches) | 68% | very high |
| July Weather | 22°C (72°F) | 131 mm (5.2 inches) | 69% | very high |
| August Weather | 21°C (71°F) | 99 mm (3.9 inches) | 67% | very high |
| September Weather | 17°C (63°F) | 70 mm (2.8 inches) | 72% | high |
| October Weather | 11°C (52°F) | 156 mm (6.1 inches) | 83% | moderate |
| November Weather | 4°C (39°F) | 117 mm (4.6 inches) | 88% | moderate |
| December Weather | -1°C (30°F) | 98 mm (3.8 inches) | 89% | low |