December Weather in Saint Mary-of-the-Woods, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Mary-of-the-Woods, United States hovers around 3°C (37°F). This range can dip as low as -19°C (-1°F) and soar to a maximum of 18°C (65°F). You'll want to be prepared for some rain, with 80 mm (3.1 in) of precipitation expected over 10 days. Notably, the average humidity is quite high at 87%, making for a chilly and damp atmosphere.

December Temperature in Saint Mary-of-the-Woods

In December in Saint Mary-of-the-Woods, the average temperature is 3°C (37°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -19°C (-1°F). Be prepared for a wide range of temperatures if you're planning to travel during this time!

December Weather in Saint Mary-of-the-Woods: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Mary-of-the-Woods, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Mary-of-the-Woods, December typically has an average temperature of 3°C (37°F), with highs reaching up to 18°C (65°F) and lows dropping to around -19°C (-1°F).

Data source: Temperature data for Saint Mary-of-the-Woods generated using information from the Copernicus Climate Change Service.

December Precipitation in Saint Mary-of-the-Woods

In Saint Mary-of-the-Woods in December, the total precipitation amount is 80 mm (3.1 in) over a period of 10 days.

December Precipitation Trends in Saint Mary-of-the-Woods

The chart displays monthly precipitation patterns in Saint Mary-of-the-Woods, 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 Mary-of-the-Woods, December typically receives around 80 mm (3.1 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 Saint Mary-of-the-Woods

In Saint Mary-of-the-Woods in December, humidity is 87%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating proper layers to stay warm while navigating the wet conditions.

December Average Humidity in Saint Mary-of-the-Woods

This chart illustrates the average monthly humidity levels in Saint Mary-of-the-Woods, 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 Mary-of-the-Woods 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 Mary-of-the-Woods

In Saint Mary-of-the-Woods 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 Saint Mary-of-the-Woods, you can check the information here.

Maximum UV Index Levels in Saint Mary-of-the-Woods for December

The chart shows the monthly maximum UV Index (UVI) for Saint Mary-of-the-Woods 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 Mary-of-the-Woods typically reaches 3, which falls under the moderate exposure category.

Data source: Saint Mary-of-the-Woods 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 Mary-of-the-Woods Compares to Other Months

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

This table compares monthly weather conditions in Saint Mary-of-the-Woods, 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 (31°F)	83 mm (3.2 inches)	84%	moderate
February Weather	1°C (34°F)	89 mm (3.5 inches)	82%	moderate
March Weather	7°C (44°F)	128 mm (5.0 inches)	84%	high
April Weather	12°C (54°F)	109 mm (4.3 inches)	83%	very high
May Weather	19°C (66°F)	132 mm (5.2 inches)	80%	very high
June Weather	24°C (75°F)	108 mm (4.3 inches)	83%	extreme
July Weather	26°C (78°F)	109 mm (4.3 inches)	82%	very high
August Weather	24°C (75°F)	100 mm (4.0 inches)	82%	very high
September Weather	22°C (71°F)	65 mm (2.5 inches)	79%	very high
October Weather	15°C (59°F)	113 mm (4.5 inches)	79%	high
November Weather	6°C (43°F)	92 mm (3.6 inches)	88%	moderate
December Weather	3°C (37°F)	80 mm (3.1 inches)	87%	moderate