December Weather in Pierce, United States

Last updated: June 24, 2025

In Pierce, United States, the average temperature in December hovers around 0°C (33°F), with extremes ranging from a chilly -19°C (-2°F) to a comfortable 22°C (71°F). During this time, expect approximately 12 mm (0.5 in) of precipitation over the course of 3 days, coupled with an average humidity of 77%. Stay prepared for variable weather!

December Temperature in Pierce

In December in Pierce, the average temperature is 0°C (33°F). Maximums can reach 22°C (71°F), while minimums can drop as low as -19°C (-2°F). Be sure to pack for a wide range of temperatures to ensure a comfortable travel experience.

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

The chart illustrates December temperature patterns in Pierce, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pierce, December typically has an average temperature of 0°C (33°F), with highs reaching up to 22°C (71°F) and lows dropping to around -19°C (-2°F).

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

December Precipitation in Pierce

In Pierce in December, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

December Precipitation Trends in Pierce

The chart displays monthly precipitation patterns in Pierce, 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 Pierce, December typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 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 Pierce

In Pierce in December, humidity is 77%. With an average temperature of 0°C (33°F), this humidity feels like a chill that seeps into your bones, making outdoor exploration less enjoyable and prompting you to seek warm, cozy spots for a reprieve from the dampness.

December Average Humidity in Pierce

This chart illustrates the average monthly humidity levels in Pierce, 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 Pierce is approximately 77%, 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 Pierce

In Pierce 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 Pierce, you can check the information here.

Maximum UV Index Levels in Pierce for December

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

Data source: Pierce 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 Pierce Compares to Other Months

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

This table compares monthly weather conditions in Pierce, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	11 mm (0.4 inches)	72%	moderate
February Weather	-2°C (29°F)	15 mm (0.6 inches)	76%	moderate
March Weather	4°C (40°F)	46 mm (1.8 inches)	61%	high
April Weather	8°C (47°F)	39 mm (1.5 inches)	60%	very high
May Weather	13°C (56°F)	100 mm (3.9 inches)	74%	very high
June Weather	20°C (69°F)	39 mm (1.5 inches)	82%	extreme
July Weather	24°C (75°F)	32 mm (1.3 inches)	82%	extreme
August Weather	22°C (73°F)	31 mm (1.2 inches)	84%	very high
September Weather	19°C (66°F)	16 mm (0.6 inches)	75%	very high
October Weather	9°C (48°F)	27 mm (1.1 inches)	73%	high
November Weather	4°C (40°F)	18 mm (0.7 inches)	74%	moderate
December Weather	0°C (33°F)	12 mm (0.5 inches)	77%	moderate