December Weather in Blue Hill, United States

Last updated: June 24, 2025

In December, the average temperature in Blue Hill, United States hovers around -2°C (30°F). However, be prepared for a wide range, as temperatures can dip as low as -21°C (-6°F) and reach a maximum of 15°C (59°F). During this month, expect 136 mm (5.4 in) of precipitation over about 11 days, with average humidity levels sitting at a brisk 84%.

December Temperature in Blue Hill

In December in Blue Hill, the average temperature is -2°C (30°F). Maximum temperatures can reach 15°C (59°F), while minimums can plunge to as low as -21°C (-6°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly weather and occasional warmth.

December Weather in Blue Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Blue Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blue Hill, December typically has an average temperature of -2°C (30°F), with highs reaching up to 15°C (59°F) and lows dropping to around -21°C (-6°F).

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

December Precipitation in Blue Hill

In Blue Hill in December, the total precipitation amount reaches 136 mm (5.4 in) over the course of 11 days.

December Precipitation Trends in Blue Hill

The chart displays monthly precipitation patterns in Blue Hill, 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 Blue Hill, December typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 11 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 Blue Hill

In Blue Hill in December, humidity is 84%. With an average temperature of -2°C (30°F), this humidity feels like a biting chill that penetrates your layers, making traveling quite uncomfortable as the cold air wraps around you, amplifying the harshness of the winter weather.

December Average Humidity in Blue Hill

This chart illustrates the average monthly humidity levels in Blue Hill, 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 Blue Hill 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 Blue Hill

In Blue Hill 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 Blue Hill, you can visit Hourly UV Index in Blue Hill.

Maximum UV Index Levels in Blue Hill for December

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

Data source: Blue Hill 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 Blue Hill Compares to Other Months

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

This table compares monthly weather conditions in Blue Hill, 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 (25°F)	95 mm (3.8 inches)	88%	low
February Weather	-3°C (26°F)	89 mm (3.5 inches)	88%	moderate
March Weather	0°C (32°F)	72 mm (2.8 inches)	85%	moderate
April Weather	6°C (43°F)	131 mm (5.2 inches)	81%	high
May Weather	11°C (52°F)	90 mm (3.6 inches)	76%	very high
June Weather	16°C (61°F)	76 mm (3.0 inches)	74%	very high
July Weather	19°C (67°F)	83 mm (3.3 inches)	74%	very high
August Weather	20°C (68°F)	71 mm (2.8 inches)	74%	very high
September Weather	16°C (62°F)	89 mm (3.5 inches)	77%	high
October Weather	11°C (52°F)	115 mm (4.5 inches)	82%	moderate
November Weather	4°C (40°F)	126 mm (5.0 inches)	85%	moderate
December Weather	-2°C (30°F)	136 mm (5.4 inches)	84%	low