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December Weather in Thorntonville, United States

Last updated: June 24, 2025

In December, the average temperature in Thorntonville, United States is a cool 10°C (50°F). However, be prepared for a wide range of temperatures, with a minimum dipping to -7°C (21°F) and a maximum reaching up to 30°C (85°F). This month also brings about 12 mm (0.5 in) of precipitation over 2 days, contributing to an average humidity of 85%—a perfect blend for those who enjoy a crisp yet dynamic climate!

December Temperature in Thorntonville

In December in Thorntonville, the average temperature is 10°C (50°F). Maximums can reach 30°C (85°F) and minimums can be as low as -7°C (21°F). Travelers should be prepared for a wide range of temperatures, ensuring they have both warm and cool clothing options.

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

The chart illustrates December temperature patterns in Thorntonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thorntonville, December typically has an average temperature of 10°C (50°F), with highs reaching up to 30°C (85°F) and lows dropping to around -7°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec475162707986878679695850
Data source: Temperature data for Thorntonville 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 Thorntonville

In Thorntonville in December, the precipitation amount is 12 mm (0.5 in) over the course of 2 days.

December Precipitation Trends in Thorntonville

The chart displays monthly precipitation patterns in Thorntonville, 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 Thorntonville, December typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec15122315242713223626912
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Thorntonville

In Thorntonville in December, humidity is 85%. With an average temperature of 10°C (50°F), this humidity feels like a heavy, damp blanket surrounding you, making travel feel sluggish and uncomfortable as you navigate through the thick, moist air.

December Average Humidity in Thorntonville

This chart illustrates the average monthly humidity levels in Thorntonville, 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 Thorntonville is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%63%61%68%70%70%67%74%75%84%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Thorntonville

In Thorntonville in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Thorntonville.

Maximum UV Index Levels in Thorntonville for December

The chart shows the monthly maximum UV Index (UVI) for Thorntonville 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 Thorntonville typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111212121211865
Data source: Thorntonville 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 Thorntonville Compares to Other Months

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

This table compares monthly weather conditions in Thorntonville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)15 mm (0.6 inches)76%moderate
February Weather11°C (52°F)12 mm (0.5 inches)74%very high
March Weather17°C (62°F)23 mm (0.9 inches)63%very high
April Weather21°C (70°F)15 mm (0.6 inches)61%extreme
May Weather26°C (79°F)24 mm (0.9 inches)68%extreme
June Weather30°C (86°F)27 mm (1.1 inches)70%extreme
July Weather31°C (87°F)13 mm (0.5 inches)70%extreme
August Weather30°C (87°F)22 mm (0.9 inches)67%extreme
September Weather26°C (80°F)36 mm (1.4 inches)74%extreme
October Weather21°C (69°F)26 mm (1.0 inches)75%very high
November Weather14°C (58°F)9 mm (0.3 inches)84%high
December Weather10°C (50°F)12 mm (0.5 inches)85%moderate

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