Last updated: June 24, 2025
In December, the average temperature in Williamsburg, United States hovers around 1°C (34°F). During this month, temperatures can dip as low as -15°C (6°F) or rise to a pleasant 19°C (67°F). You'll also experience an average precipitation of 93 mm (3.7 in) over 11 days, accompanied by a high average humidity of 88%. Prepare accordingly for this chilly yet vibrant season!
In December in Williamsburg, the average temperature is 1°C (34°F), with maximums reaching up to 19°C (67°F) and minimums dropping as low as -15°C (6°F). Travelers should be prepared for a wide range of temperatures, making layered clothing essential for this time of year.
In Williamsburg in December, the precipitation amount is 93 mm (3.7 in) over the course of 11 days, indicating that rain is expected to be fairly frequent during that time.
In Williamsburg in December humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.
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 | -2°C (29°F) | 67 mm (2.6 inches) | 89% | moderate |
| February Weather | 0°C (33°F) | 106 mm (4.2 inches) | 90% | moderate |
| March Weather | 4°C (39°F) | 91 mm (3.6 inches) | 89% | high |
| April Weather | 10°C (50°F) | 109 mm (4.3 inches) | 88% | very high |
| May Weather | 16°C (60°F) | 129 mm (5.1 inches) | 80% | very high |
| June Weather | 20°C (69°F) | 112 mm (4.4 inches) | 79% | very high |
| July Weather | 23°C (74°F) | 117 mm (4.6 inches) | 74% | very high |
| August Weather | 22°C (72°F) | 100 mm (3.9 inches) | 64% | very high |
| September Weather | 19°C (66°F) | 130 mm (5.1 inches) | 67% | very high |
| October Weather | 13°C (56°F) | 113 mm (4.4 inches) | 81% | high |
| November Weather | 5°C (41°F) | 78 mm (3.1 inches) | 89% | moderate |
| December Weather | 1°C (34°F) | 93 mm (3.7 inches) | 88% | moderate |