December Weather in Saint Stephen, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Stephen, United States hovers around 11°C (52°F). Expect a chilly minimum of -4°C (25°F) and a pleasant maximum of 25°C (78°F). With an average humidity of 87%, prepare for some damp days, as you'll likely encounter 144 mm (5.7 in) of precipitation over 9 days.

December Temperature in Saint Stephen

In December in Saint Stephen, the average temperature is 11°C (52°F). Maximum temperatures can reach as high as 25°C (78°F), while the minimum can drop to a chilly -4°C (25°F). This variation in weather makes it essential for travelers to pack layers to stay comfortable during their visit.

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 11°C (52°F), with highs reaching up to 25°C (78°F) and lows dropping to around -4°C (25°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 144 mm (5.7 in) spread over 9 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 144 mm (5.7 inches) of precipitation spread over approximately 9 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 Saint Stephen

In Saint Stephen in December, humidity is 87%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make your clothes cling uncomfortably, leaving you feeling slightly weighed down while exploring the area.

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 87%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Saint Stephen for better planning.

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 4, which falls under the moderate 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 (50°F)	75 mm (2.9 inches)	86%	moderate
February Weather	13°C (55°F)	92 mm (3.6 inches)	81%	high
March Weather	15°C (59°F)	77 mm (3.0 inches)	81%	very high
April Weather	19°C (66°F)	96 mm (3.8 inches)	79%	very high
May Weather	23°C (74°F)	93 mm (3.6 inches)	75%	extreme
June Weather	26°C (79°F)	134 mm (5.3 inches)	75%	extreme
July Weather	27°C (82°F)	171 mm (6.7 inches)	80%	extreme
August Weather	27°C (81°F)	164 mm (6.5 inches)	81%	very high
September Weather	25°C (77°F)	135 mm (5.3 inches)	83%	very high
October Weather	21°C (70°F)	55 mm (2.1 inches)	78%	very high
November Weather	13°C (56°F)	70 mm (2.8 inches)	85%	high
December Weather	11°C (52°F)	144 mm (5.7 inches)	87%	moderate