December Weather in Blue Grass, United States

Last updated: June 24, 2025

In December, the average temperature in Blue Grass, United States hovers around 0°C (32°F), with a minimum chill of -22°C (-7°F) and a mild maximum reaching 21°C (71°F). Expect about 48 mm (1.9 in) of precipitation spread over 5 days, while the air remains quite humid, averaging around 84%. Stay prepared for a mix of weather this season!

December Temperature in Blue Grass

In December in Blue Grass, the average temperature is 0°C (32°F). Maximums can reach 21°C (71°F), and minimums can drop as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures, from chilly to mild, making it essential to pack layers for this time of year.

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

The chart illustrates December temperature patterns in Blue Grass, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blue Grass, December typically has an average temperature of 0°C (32°F), with highs reaching up to 21°C (71°F) and lows dropping to around -22°C (-7°F).

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

December Precipitation in Blue Grass

In Blue Grass in December, the precipitation amount is 48 mm (1.9 in) spread over the course of 5 days.

December Precipitation Trends in Blue Grass

The chart displays monthly precipitation patterns in Blue Grass, 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 Grass, December typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 5 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 Grass

In Blue Grass in December, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.

December Average Humidity in Blue Grass

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

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

Maximum UV Index Levels in Blue Grass for December

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

Data source: Blue Grass 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 Grass Compares to Other Months

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

This table compares monthly weather conditions in Blue Grass, 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 (24°F)	53 mm (2.1 inches)	81%	moderate
February Weather	-3°C (26°F)	60 mm (2.4 inches)	81%	moderate
March Weather	4°C (40°F)	89 mm (3.5 inches)	81%	high
April Weather	10°C (50°F)	101 mm (4.0 inches)	82%	very high
May Weather	17°C (63°F)	146 mm (5.7 inches)	78%	very high
June Weather	23°C (74°F)	130 mm (5.1 inches)	81%	extreme
July Weather	25°C (77°F)	75 mm (2.9 inches)	79%	very high
August Weather	23°C (74°F)	75 mm (3.0 inches)	77%	very high
September Weather	20°C (69°F)	107 mm (4.2 inches)	78%	very high
October Weather	12°C (54°F)	121 mm (4.8 inches)	78%	high
November Weather	4°C (39°F)	51 mm (2.0 inches)	87%	moderate
December Weather	0°C (32°F)	48 mm (1.9 inches)	84%	low