December Weather in Williams, United States

Last updated: June 24, 2025

In December, the average temperature in Williams, United States is a mild 10°C (50°F). Expect a minimum of 0°C (32°F) and a comfortable maximum of 24°C (76°F). The region receives an average of 68 mm (2.7 in) of precipitation over 8 days, contributing to a high average humidity of 83%. This combination creates a unique climate that's perfect for cozy indoor activities or exploring the outdoors!

December Temperature in Williams

In December in Williams, the average temperature is 10°C (50°F). The maximum can reach 24°C (76°F), and the minimum can be as low as 0°C (32°F). This makes it a perfect time for travelers to experience mild weather while enjoying outdoor activities.

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

The chart illustrates December temperature patterns in Williams, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williams, December typically has an average temperature of 10°C (50°F), with highs reaching up to 24°C (76°F) and lows dropping to around 0°C (32°F).

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

December Precipitation in Williams

In Williams in December, the precipitation amount is 68 mm (2.7 in) spread over 8 days.

December Precipitation Trends in Williams

The chart displays monthly precipitation patterns in Williams, 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 Williams, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 8 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 Williams

In Williams in December, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

December Average Humidity in Williams

This chart illustrates the average monthly humidity levels in Williams, 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 Williams is approximately 83%, 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 Williams

In Williams 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 Williams, you can check the information here.

Maximum UV Index Levels in Williams for December

The chart shows the monthly maximum UV Index (UVI) for Williams 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 Williams typically reaches 3, which falls under the moderate exposure category.

Data source: Williams 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 Williams Compares to Other Months

Weather in Williams varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Williams, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Williams, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	98 mm (3.8 inches)	84%	moderate
February Weather	12°C (53°F)	101 mm (4.0 inches)	84%	moderate
March Weather	13°C (56°F)	68 mm (2.7 inches)	83%	high
April Weather	17°C (63°F)	28 mm (1.1 inches)	81%	very high
May Weather	22°C (71°F)	22 mm (0.9 inches)	74%	extreme
June Weather	27°C (81°F)	4 mm (0.2 inches)	64%	extreme
July Weather	30°C (86°F)	0 mm (0.0 inches)	44%	extreme
August Weather	29°C (84°F)	1 mm (0.0 inches)	36%	very high
September Weather	25°C (77°F)	1 mm (0.0 inches)	44%	very high
October Weather	19°C (67°F)	25 mm (1.0 inches)	65%	high
November Weather	13°C (56°F)	34 mm (1.3 inches)	84%	moderate
December Weather	10°C (50°F)	68 mm (2.7 inches)	83%	moderate