December Weather in Williamsburg, United States

Last updated: June 24, 2025

In December, the average temperature in Williamsburg, United States hovers around 6°C (44°F). While you might experience minimums of -12°C (11°F), there are also chances of reaching a comfortable maximum of 23°C (74°F). Be prepared for some moisture, as 136 mm (5.4 in) of precipitation can fall over 11 days. Additionally, the air tends to feel quite humid, with an average humidity level of 88%.

December Temperature in Williamsburg

In December in Williamsburg, the average temperature is 6°C (44°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -12°C (11°F). This variation makes it essential for travelers to pack accordingly and be prepared for fluctuating weather conditions.

December Weather in Williamsburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Williamsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williamsburg, December typically has an average temperature of 6°C (44°F), with highs reaching up to 23°C (74°F) and lows dropping to around -12°C (11°F).

Data source: Temperature data for Williamsburg generated using information from the Copernicus Climate Change Service.

December Precipitation in Williamsburg

In Williamsburg in December, the total precipitation amount reaches 136 mm (5.4 in) over the course of 11 days.

December Precipitation Trends in Williamsburg

The chart displays monthly precipitation patterns in Williamsburg, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Williamsburg, December typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Williamsburg

In Williamsburg in December humidity is 88%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures less inviting and requiring warm, layered clothing to stay comfortable while exploring.

December Average Humidity in Williamsburg

This chart illustrates the average monthly humidity levels in Williamsburg, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Williamsburg is approximately 88%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Williamsburg

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.

Maximum UV Index Levels in Williamsburg for December

The chart shows the monthly maximum UV Index (UVI) for Williamsburg in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Williamsburg typically reaches 3, which falls under the moderate exposure category.

Data source: Williamsburg December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Williamsburg Compares to Other Months

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.

This table compares monthly weather conditions in Williamsburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	97 mm (3.8 inches)	88%	moderate
February Weather	7°C (44°F)	188 mm (7.4 inches)	88%	high
March Weather	10°C (51°F)	148 mm (5.8 inches)	87%	high
April Weather	14°C (58°F)	146 mm (5.8 inches)	84%	very high
May Weather	20°C (68°F)	122 mm (4.8 inches)	84%	extreme
June Weather	23°C (74°F)	129 mm (5.1 inches)	83%	extreme
July Weather	25°C (78°F)	104 mm (4.1 inches)	79%	extreme
August Weather	24°C (76°F)	146 mm (5.7 inches)	66%	very high
September Weather	22°C (72°F)	108 mm (4.2 inches)	67%	very high
October Weather	16°C (62°F)	130 mm (5.1 inches)	76%	high
November Weather	8°C (47°F)	75 mm (2.9 inches)	89%	moderate
December Weather	6°C (44°F)	136 mm (5.4 inches)	88%	moderate