Last updated: June 24, 2025
In Williamsburg, United States, the average temperature in December hovers around -1°C (31°F). While it can dip as low as -22°C (-8°F), there's potential for warmth, with maximums reaching 23°C (73°F). Expect about 43 mm (1.7 in) of precipitation over 5 days during this month, contributing to an average humidity of 84%—making for a chilly yet captivating atmosphere!
In December in Williamsburg, the average temperature is -1°C (31°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -22°C (-8°F). Be prepared for a wide range of temperatures if you're planning to visit during this time.
In Williamsburg in December, the precipitation amount is 43 mm (1.7 in) over the course of 5 days.
In Williamsburg in December humidity is 84%. With an average temperature of -1°C (31°F), this humidity feels like a biting chill that seeps through layers of clothing, making outdoor excursions brisk and invigorating, yet challenging for those unaccustomed to such damp conditions.
In Williamsburg 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 Williamsburg, you can check the information here.
UV Risk Categories
Weather in Williamsburg varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Williamsburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 48 mm (1.9 inches) | 81% | moderate |
| February Weather | -5°C (24°F) | 54 mm (2.1 inches) | 81% | moderate |
| March Weather | 4°C (39°F) | 78 mm (3.1 inches) | 81% | high |
| April Weather | 9°C (49°F) | 84 mm (3.3 inches) | 82% | very high |
| May Weather | 17°C (62°F) | 158 mm (6.2 inches) | 78% | very high |
| June Weather | 23°C (74°F) | 136 mm (5.4 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 79 mm (3.1 inches) | 79% | very high |
| August Weather | 23°C (73°F) | 64 mm (2.5 inches) | 77% | very high |
| September Weather | 20°C (68°F) | 123 mm (4.8 inches) | 78% | very high |
| October Weather | 11°C (53°F) | 137 mm (5.4 inches) | 78% | high |
| November Weather | 3°C (38°F) | 49 mm (1.9 inches) | 87% | moderate |
| December Weather | -1°C (31°F) | 43 mm (1.7 inches) | 84% | moderate |