December Weather in Clarkson, United States

Last updated: June 24, 2025

In December, the average temperature in Clarkson, United States hovers around -1°C (30°F), with a minimum dropping to a chilly -22°C (-8°F) and a maximum reaching a pleasant 20°C (68°F). This month sees an average precipitation of 43 mm (1.7 in) over the course of about 4 days. Be prepared for damp conditions, as the average humidity stands at a notable 83%.

December Temperature in Clarkson

In December in Clarkson, the average temperature is -1°C (30°F), with highs reaching up to 20°C (68°F) and lows dipping to -22°C (-8°F). Be prepared for a wide range of temperatures if you're planning to travel during this time!

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

The chart illustrates December temperature patterns in Clarkson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clarkson, December typically has an average temperature of -1°C (30°F), with highs reaching up to 20°C (68°F) and lows dropping to around -22°C (-8°F).

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

December Precipitation in Clarkson

In Clarkson in December, the precipitation amount is 43 mm (1.7 in) over the course of 4 days.

December Precipitation Trends in Clarkson

The chart displays monthly precipitation patterns in Clarkson, 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 Clarkson, December typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 4 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 Clarkson

In Clarkson in December humidity is 83%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that seeps through your layers, making outdoor activities uncomfortable and encouraging travelers to seek shelter indoors.

December Average Humidity in Clarkson

This chart illustrates the average monthly humidity levels in Clarkson, 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 Clarkson is approximately 83%, 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 Clarkson

In Clarkson 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 Clarkson, you can visit Hourly UV Index in Clarkson.

Maximum UV Index Levels in Clarkson for December

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

Data source: Clarkson 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 Clarkson Compares to Other Months

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

This table compares monthly weather conditions in Clarkson, 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 (24°F)	28 mm (1.1 inches)	76%	moderate
February Weather	-4°C (24°F)	25 mm (1.0 inches)	80%	moderate
March Weather	4°C (39°F)	87 mm (3.4 inches)	73%	high
April Weather	9°C (49°F)	59 mm (2.3 inches)	74%	very high
May Weather	16°C (61°F)	147 mm (5.8 inches)	78%	very high
June Weather	24°C (75°F)	106 mm (4.2 inches)	82%	very high
July Weather	25°C (77°F)	67 mm (2.6 inches)	83%	very high
August Weather	23°C (74°F)	101 mm (4.0 inches)	80%	very high
September Weather	20°C (68°F)	70 mm (2.7 inches)	75%	very high
October Weather	11°C (51°F)	87 mm (3.4 inches)	75%	high
November Weather	4°C (39°F)	27 mm (1.1 inches)	82%	moderate
December Weather	-1°C (30°F)	43 mm (1.7 inches)	83%	low