December Weather in Sparta, United States

Last updated: June 24, 2025

In Sparta, United States, the average temperature in December hovers around 10°C (51°F). Expect a chilly minimum of -5°C (24°F) and a comfortable maximum reaching up to 25°C (78°F). Be prepared for some rain, as the area receives approximately 123 mm (4.8 in) of precipitation over 11 days. With an average humidity of 89%, it's a good idea to pack a light jacket and an umbrella!

December Temperature in Sparta

In December in Sparta, the average temperature is 10°C (51°F). Maximums can reach 25°C (78°F), while minimums can be as low as -5°C (24°F). Be prepared for a wide range of temperatures, making it essential to pack layered clothing for your travels.

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

The chart illustrates December temperature patterns in Sparta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sparta, December typically has an average temperature of 10°C (51°F), with highs reaching up to 25°C (78°F) and lows dropping to around -5°C (24°F).

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

December Precipitation in Sparta

In Sparta in December, the precipitation amount is 123 mm (4.8 in) occurring over the course of 11 days.

December Precipitation Trends in Sparta

The chart displays monthly precipitation patterns in Sparta, 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 Sparta, December typically receives around 123 mm (4.8 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 Sparta

In Sparta in December humidity is 89%. With an average temperature of 10°C (51°F), this humidity feels like traveling through a thick fog, where the damp air clings to your skin, making the coolness feel even chillier and adding an element of discomfort to your adventures.

December Average Humidity in Sparta

This chart illustrates the average monthly humidity levels in Sparta, 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 Sparta is approximately 89%, 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 Sparta

In Sparta in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Sparta for better planning.

Maximum UV Index Levels in Sparta for December

The chart shows the monthly maximum UV Index (UVI) for Sparta 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 Sparta typically reaches 4, which falls under the moderate exposure category.

Data source: Sparta 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 Sparta Compares to Other Months

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

This table compares monthly weather conditions in Sparta, 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 (49°F)	98 mm (3.9 inches)	86%	moderate
February Weather	12°C (54°F)	121 mm (4.8 inches)	84%	high
March Weather	15°C (59°F)	76 mm (3.0 inches)	83%	very high
April Weather	18°C (65°F)	96 mm (3.8 inches)	81%	very high
May Weather	23°C (74°F)	94 mm (3.7 inches)	81%	extreme
June Weather	26°C (79°F)	116 mm (4.6 inches)	81%	extreme
July Weather	27°C (82°F)	105 mm (4.1 inches)	83%	extreme
August Weather	27°C (81°F)	114 mm (4.5 inches)	81%	very high
September Weather	25°C (78°F)	98 mm (3.9 inches)	82%	very high
October Weather	20°C (69°F)	100 mm (3.9 inches)	78%	very high
November Weather	13°C (55°F)	81 mm (3.2 inches)	86%	high
December Weather	10°C (51°F)	123 mm (4.8 inches)	89%	moderate