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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 7°C (45°F). Expect a chilly minimum of -10°C (15°F), while the mercury can rise to a mild maximum of 23°C (73°F). Prepare for some rain, with a total precipitation of 148 mm (5.8 in) spread over 11 days, and stay cozy with an average humidity level of 88%.

December Temperature in Sparta

In December in Sparta, the average temperature is 7°C (45°F), with maximums reaching 23°C (73°F) and minimums dipping as low as -10°C (15°F). Consequently, travelers should prepare for a wide range of temperatures and pack accordingly for both warmth and chill.

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 7°C (45°F), with highs reaching up to 23°C (73°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec404552586975787773634845
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 148 mm (5.8 in) spread over a duration 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 148 mm (5.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11018816614912912412411611312778148
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 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
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 Weather5°C (40°F)110 mm (4.3 inches)87%moderate
February Weather7°C (46°F)188 mm (7.4 inches)87%high
March Weather11°C (52°F)166 mm (6.5 inches)85%very high
April Weather15°C (59°F)149 mm (5.9 inches)82%very high
May Weather20°C (69°F)129 mm (5.1 inches)83%extreme
June Weather24°C (75°F)124 mm (4.9 inches)82%extreme
July Weather26°C (79°F)124 mm (4.9 inches)78%extreme
August Weather25°C (77°F)116 mm (4.6 inches)67%very high
September Weather23°C (73°F)113 mm (4.4 inches)64%very high
October Weather17°C (63°F)127 mm (5.0 inches)74%high
November Weather9°C (49°F)78 mm (3.1 inches)87%moderate
December Weather7°C (45°F)148 mm (5.8 inches)88%moderate

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