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December Weather in Thornley, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Thornley, United Kingdom hovers around 5°C (42°F). Expect chilly days with lows dipping to a brisk -5°C (23°F) and highs reaching up to 13°C (56°F). During this month, anticipate 71 mm (2.8 in) of precipitation spread over approximately 13 days, contributing to an average humidity of 88%.

December Temperature in Thornley

In December in Thornley, the average temperature is 5°C (42°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -5°C (23°F). Travelers should be prepared for chilly conditions and dress in layers to enjoy their adventures.

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

The chart illustrates December temperature patterns in Thornley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornley, December typically has an average temperature of 5°C (42°F), with highs reaching up to 13°C (56°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec404244465258616156514541
Data source: Temperature data for Thornley 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 Thornley

In Thornley in December, the total precipitation amount is 71 mm (2.8 in) occurring over the course of 13 days.

December Precipitation Trends in Thornley

The chart displays monthly precipitation patterns in Thornley, 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 Thornley, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec517664355680778165836271
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Thornley

In Thornley in December humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

December Average Humidity in Thornley

This chart illustrates the average monthly humidity levels in Thornley, 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 Thornley is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%84%83%85%83%82%87%89%90%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Thornley

In Thornley in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Thornley.

Maximum UV Index Levels in Thornley for December

The chart shows the monthly maximum UV Index (UVI) for Thornley 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 Thornley typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568865321
Data source: Thornley 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 Thornley Compares to Other Months

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

This table compares monthly weather conditions in Thornley, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)51 mm (2.0 inches)89%low
February Weather5°C (42°F)76 mm (3.0 inches)87%low
March Weather7°C (44°F)64 mm (2.5 inches)85%moderate
April Weather8°C (47°F)35 mm (1.4 inches)84%moderate
May Weather11°C (53°F)56 mm (2.2 inches)83%high
June Weather14°C (58°F)80 mm (3.2 inches)85%very high
July Weather16°C (62°F)77 mm (3.0 inches)83%very high
August Weather16°C (61°F)80 mm (3.2 inches)82%high
September Weather14°C (57°F)65 mm (2.6 inches)87%moderate
October Weather11°C (51°F)83 mm (3.3 inches)89%moderate
November Weather7°C (46°F)62 mm (2.5 inches)90%low
December Weather5°C (42°F)71 mm (2.8 inches)88%low

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