December Weather in Saint Stephen, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Stephen, United States hovers around -6°C (21°F), with temperatures dipping as low as -28°C (-18°F) at night and peaking at 9°C (49°F) during the day. Expect 46 mm (1.8 in) of precipitation over about 7 days, contributing to an average humidity level of 84%. Prepare for chilly and wet conditions!

December Temperature in Saint Stephen

In December in Saint Stephen, the average temperature is -6°C (21°F). The maximum can reach 9°C (49°F), while the minimum can drop as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

December Weather in Saint Stephen: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Stephen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Stephen, December typically has an average temperature of -6°C (21°F), with highs reaching up to 9°C (49°F) and lows dropping to around -28°C (-18°F).

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

December Precipitation in Saint Stephen

In Saint Stephen in December, the precipitation amount is 46 mm (1.8 in) over the course of 7 days.

December Precipitation Trends in Saint Stephen

The chart displays monthly precipitation patterns in Saint Stephen, 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 Saint Stephen, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Saint Stephen

In Saint Stephen in December humidity is 84%. With an average temperature of -6°C (21°F), this humidity feels like an icy blanket enveloping you, making travel uncomfortable as the cold dampness seeps into your bones and slows your movements, turning each step into a shivering struggle.

December Average Humidity in Saint Stephen

This chart illustrates the average monthly humidity levels in Saint Stephen, 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 Saint Stephen 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 Saint Stephen

In Saint Stephen in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Saint Stephen, you can visit Hourly UV Index in Saint Stephen.

Maximum UV Index Levels in Saint Stephen for December

The chart shows the monthly maximum UV Index (UVI) for Saint Stephen 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 Saint Stephen typically reaches 2, which falls under the low exposure category.

Data source: Saint Stephen 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 Saint Stephen Compares to Other Months

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

This table compares monthly weather conditions in Saint Stephen, 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 (14°F)	19 mm (0.7 inches)	87%	low
February Weather	-10°C (14°F)	23 mm (0.9 inches)	90%	moderate
March Weather	-1°C (31°F)	46 mm (1.8 inches)	85%	moderate
April Weather	5°C (41°F)	78 mm (3.1 inches)	84%	high
May Weather	14°C (57°F)	86 mm (3.4 inches)	78%	very high
June Weather	21°C (70°F)	72 mm (2.8 inches)	80%	very high
July Weather	23°C (73°F)	105 mm (4.1 inches)	81%	very high
August Weather	21°C (69°F)	139 mm (5.5 inches)	81%	very high
September Weather	17°C (62°F)	115 mm (4.5 inches)	81%	high
October Weather	8°C (46°F)	104 mm (4.1 inches)	84%	moderate
November Weather	-1°C (31°F)	30 mm (1.2 inches)	88%	moderate
December Weather	-6°C (21°F)	46 mm (1.8 inches)	84%	low