December Weather in Island Falls, United States

Last updated: June 24, 2025

In Island Falls, United States, the average temperature in December hovers around -6°C (22°F). While the mercury can dip as low as -25°C (-13°F), it can also peak at a comfortable 15°C (59°F). Expect about 114 mm (4.5 in) of precipitation over the course of approximately 10 days, accompanied by an average humidity level of 84%.

December Temperature in Island Falls

In December in Island Falls, the average temperature is -6°C (22°F). Maximum temperatures can reach 15°C (59°F), while the minimum can plummet to -25°C (-13°F). It's advisable to pack warm clothing and be prepared for a wide range of temperatures when traveling to Island Falls during this month.

December Weather in Island Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Island Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Island Falls, December typically has an average temperature of -6°C (22°F), with highs reaching up to 15°C (59°F) and lows dropping to around -25°C (-13°F).

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

December Precipitation in Island Falls

In Island Falls in December, the precipitation amount is 114 mm (4.5 in) over a period of 10 days.

December Precipitation Trends in Island Falls

The chart displays monthly precipitation patterns in Island Falls, 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 Island Falls, December typically receives around 114 mm (4.5 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 Island Falls

In Island Falls in December humidity is 84%. With an average temperature of -6°C (22°F), this humidity feels like an unpleasant chill that seeps into your bones, making travel feel much more uncomfortable and harsh than the temperature alone suggests.

December Average Humidity in Island Falls

This chart illustrates the average monthly humidity levels in Island Falls, 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 Island Falls 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 Island Falls

In Island Falls 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 Island Falls, you can visit Hourly UV Index in Island Falls.

Maximum UV Index Levels in Island Falls for December

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

Data source: Island Falls 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 Island Falls Compares to Other Months

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

This table compares monthly weather conditions in Island Falls, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	95 mm (3.8 inches)	88%	low
February Weather	-7°C (19°F)	84 mm (3.3 inches)	88%	moderate
March Weather	-3°C (27°F)	80 mm (3.1 inches)	85%	moderate
April Weather	4°C (40°F)	120 mm (4.7 inches)	81%	high
May Weather	11°C (53°F)	104 mm (4.1 inches)	76%	very high
June Weather	17°C (63°F)	86 mm (3.4 inches)	74%	very high
July Weather	20°C (68°F)	93 mm (3.6 inches)	74%	very high
August Weather	19°C (67°F)	77 mm (3.0 inches)	74%	very high
September Weather	15°C (59°F)	86 mm (3.4 inches)	77%	high
October Weather	8°C (47°F)	121 mm (4.8 inches)	82%	moderate
November Weather	1°C (33°F)	113 mm (4.5 inches)	85%	moderate
December Weather	-6°C (22°F)	114 mm (4.5 inches)	84%	low