December Weather in Blackstone, United States

Last updated: June 24, 2025

In December, the average temperature in Blackstone, United States hovers around 7°C (45°F). Be prepared for a range of temperatures, with a minimum dipping to -9°C (15°F) and a maximum reaching 23°C (73°F). Expect about 97 mm (3.8 in) of precipitation spread across 9 days, accompanied by a relatively high average humidity of 85%. Stay cozy and bring your umbrella!

December Temperature in Blackstone

In December in Blackstone, the average temperature is 7°C (45°F). The maximum can reach 23°C (73°F), while the minimum can drop as low as -9°C (15°F). It's essential to be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Blackstone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blackstone, December typically has an average temperature of 7°C (45°F), with highs reaching up to 23°C (73°F) and lows dropping to around -9°C (15°F).

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

December Precipitation in Blackstone

In Blackstone in December, the total precipitation amount reaches 97 mm (3.8 in) over the course of 9 days.

December Precipitation Trends in Blackstone

The chart displays monthly precipitation patterns in Blackstone, 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 Blackstone, December typically receives around 97 mm (3.8 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 Blackstone

In Blackstone in December, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

December Average Humidity in Blackstone

This chart illustrates the average monthly humidity levels in Blackstone, 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 Blackstone is approximately 85%, 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 Blackstone

In Blackstone 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 Blackstone, you can check the information here.

Maximum UV Index Levels in Blackstone for December

The chart shows the monthly maximum UV Index (UVI) for Blackstone 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 Blackstone typically reaches 3, which falls under the moderate exposure category.

Data source: Blackstone 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 Blackstone Compares to Other Months

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

This table compares monthly weather conditions in Blackstone, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	74 mm (2.9 inches)	84%	moderate
February Weather	8°C (46°F)	101 mm (4.0 inches)	84%	high
March Weather	10°C (51°F)	73 mm (2.9 inches)	84%	high
April Weather	16°C (60°F)	106 mm (4.2 inches)	82%	very high
May Weather	20°C (69°F)	111 mm (4.4 inches)	82%	very high
June Weather	24°C (76°F)	118 mm (4.7 inches)	83%	very high
July Weather	27°C (81°F)	91 mm (3.6 inches)	79%	very high
August Weather	26°C (78°F)	142 mm (5.6 inches)	77%	very high
September Weather	23°C (74°F)	103 mm (4.0 inches)	75%	very high
October Weather	18°C (64°F)	116 mm (4.6 inches)	81%	high
November Weather	10°C (50°F)	77 mm (3.0 inches)	87%	moderate
December Weather	7°C (45°F)	97 mm (3.8 inches)	85%	moderate