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December Weather in Sparta, United States

Last updated: June 24, 2025

In December, the average temperature in Sparta, United States hovers around 5°C (41°F), with a minimum of -11°C (13°F) and a maximum of 22°C (71°F). Expect precipitation of 104 mm (4.1 in) spread over 8 days, and prepare for a rather humid experience with an average humidity level of 86%.

December Temperature in Sparta

In December in Sparta, the average temperature is 5°C (41°F). Maximums can reach 22°C (71°F), and minimums can drop as low as -11°C (13°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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 5°C (41°F), with highs reaching up to 22°C (71°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec374247556470747268594541
Data source: Temperature data for Sparta generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Sparta

In Sparta, in December, the precipitation amount is 104 mm (4.1 in) over a span of 8 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 104 mm (4.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec83114881421371068812413213776104
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sparta

In Sparta in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
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 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 Sparta, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
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.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)83 mm (3.3 inches)87%moderate
February Weather6°C (43°F)114 mm (4.5 inches)87%high
March Weather8°C (47°F)88 mm (3.5 inches)86%very high
April Weather13°C (55°F)142 mm (5.6 inches)84%very high
May Weather18°C (64°F)137 mm (5.4 inches)83%extreme
June Weather21°C (70°F)106 mm (4.2 inches)83%extreme
July Weather23°C (74°F)88 mm (3.5 inches)79%extreme
August Weather22°C (73°F)124 mm (4.9 inches)66%very high
September Weather20°C (68°F)132 mm (5.2 inches)68%very high
October Weather15°C (59°F)137 mm (5.4 inches)78%very high
November Weather7°C (45°F)76 mm (3.0 inches)89%moderate
December Weather5°C (41°F)104 mm (4.1 inches)86%moderate

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