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December Weather in Jonesborough, United States

Last updated: June 24, 2025

In December, the average temperature in Jonesborough, United States hovers around 6°C (42°F). Visitors can expect a temperature range where the minimum dips to a chilly -11°C (13°F) and the maximum peaks at a pleasant 21°C (71°F). This month also brings 130 mm (5.1 in) of precipitation spread over 13 days, and a high average humidity of 88%. Be prepared for a mix of cool weather and soft, rainy days!

December Temperature in Jonesborough

In December in Jonesborough, the average temperature is 6°C (42°F), with maximums reaching 21°C (71°F) and minimums dropping as low as -11°C (13°F). Travelers should be prepared for a wide range of temperatures, making layered clothing essential for outdoor activities.

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

The chart illustrates December temperature patterns in Jonesborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jonesborough, December typically has an average temperature of 6°C (42°F), with highs reaching up to 21°C (71°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec384449566571757370604642
Data source: Temperature data for Jonesborough 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 Jonesborough

In Jonesborough in December, the precipitation amount is 130 mm (5.1 in) spread over 13 days.

December Precipitation Trends in Jonesborough

The chart displays monthly precipitation patterns in Jonesborough, 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 Jonesborough, December typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec97143128133120111841058511681130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Jonesborough

In Jonesborough in December, humidity is 88%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to your skin and saps your energy.

December Average Humidity in Jonesborough

This chart illustrates the average monthly humidity levels in Jonesborough, 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 Jonesborough is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Jonesborough

In Jonesborough 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 Jonesborough, you can check the information here.

Maximum UV Index Levels in Jonesborough for December

The chart shows the monthly maximum UV Index (UVI) for Jonesborough 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 Jonesborough typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Jonesborough 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 Jonesborough Compares to Other Months

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

This table compares monthly weather conditions in Jonesborough, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)97 mm (3.8 inches)88%moderate
February Weather7°C (44°F)143 mm (5.6 inches)88%high
March Weather9°C (49°F)128 mm (5.1 inches)87%very high
April Weather13°C (56°F)133 mm (5.2 inches)84%very high
May Weather18°C (65°F)120 mm (4.7 inches)84%extreme
June Weather22°C (71°F)111 mm (4.4 inches)83%extreme
July Weather24°C (75°F)84 mm (3.3 inches)79%extreme
August Weather23°C (73°F)105 mm (4.1 inches)66%very high
September Weather21°C (70°F)85 mm (3.4 inches)67%very high
October Weather16°C (60°F)116 mm (4.5 inches)76%very high
November Weather8°C (46°F)81 mm (3.2 inches)89%moderate
December Weather6°C (42°F)130 mm (5.1 inches)88%moderate

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