December Weather in Millville, United States

Last updated: June 24, 2025

In December, the average temperature in Millville, United States hovers around 7°C (45°F), with temperatures ranging from a chilly -6°C (21°F) at the lowest to a pleasant 19°C (66°F) at the highest. Expect about 116 mm (4.6 in) of precipitation over 10 days, contributing to an average humidity of 84%. Stay prepared for a mix of cool breezes and occasional rain!

December Temperature in Millville

In December in Millville, the average temperature is 7°C (45°F). Maximum temperatures can reach 19°C (66°F), while minimums can drop as low as -6°C (21°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.

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

The chart illustrates December temperature patterns in Millville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millville, December typically has an average temperature of 7°C (45°F), with highs reaching up to 19°C (66°F) and lows dropping to around -6°C (21°F).

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

December Precipitation in Millville

In Millville in December, the total precipitation amount is 116 mm (4.6 in) over a span of 10 days.

December Precipitation Trends in Millville

The chart displays monthly precipitation patterns in Millville, 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 Millville, December typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 10 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 Millville

In Millville in December, humidity is 84%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm while exploring the sights.

December Average Humidity in Millville

This chart illustrates the average monthly humidity levels in Millville, 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 Millville is approximately 84%, 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 Millville

In Millville 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 Millville, you can check the information here.

Maximum UV Index Levels in Millville for December

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

Data source: Millville 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 Millville Compares to Other Months

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

This table compares monthly weather conditions in Millville, 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 (40°F)	82 mm (3.2 inches)	84%	moderate
February Weather	6°C (42°F)	114 mm (4.5 inches)	83%	moderate
March Weather	7°C (45°F)	102 mm (4.0 inches)	83%	high
April Weather	12°C (53°F)	87 mm (3.4 inches)	81%	very high
May Weather	16°C (62°F)	120 mm (4.7 inches)	78%	very high
June Weather	22°C (71°F)	82 mm (3.2 inches)	79%	very high
July Weather	25°C (78°F)	114 mm (4.5 inches)	74%	very high
August Weather	25°C (77°F)	111 mm (4.4 inches)	72%	very high
September Weather	23°C (73°F)	97 mm (3.8 inches)	75%	very high
October Weather	18°C (65°F)	137 mm (5.4 inches)	81%	high
November Weather	11°C (52°F)	95 mm (3.8 inches)	85%	moderate
December Weather	7°C (45°F)	116 mm (4.6 inches)	84%	moderate