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December Weather in Winchester, United States

Last updated: June 24, 2025

In December, the average temperature in Winchester, United States is a brisk 5°C (41°F). Expect a minimum of -12°C (11°F) and a potential maximum of 21°C (70°F). During this time, the region experiences about 129 mm (5.1 in) of precipitation over 10 days, with an average humidity of a notably high 88%. Stay prepared for a mix of chilly air and damp days!

December Temperature in Winchester

In December in Winchester, the average temperature is 5°C (41°F). Maximums can reach 21°C (70°F), while minimums can drop to as low as -12°C (11°F). Be prepared for a wide range of temperatures if you plan to travel during this month.

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

The chart illustrates December temperature patterns in Winchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winchester, December typically has an average temperature of 5°C (41°F), with highs reaching up to 21°C (70°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec364148556773777671604541
Data source: Temperature data for Winchester 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 Winchester

In Winchester in December, the precipitation amount is 129 mm (5.1 in) over a span of 10 days.

December Precipitation Trends in Winchester

The chart displays monthly precipitation patterns in Winchester, 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 Winchester, December typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec99142131138118170969912111184129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Winchester

In Winchester in December humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.

December Average Humidity in Winchester

This chart illustrates the average monthly humidity levels in Winchester, 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 Winchester 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 Winchester

In Winchester 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 Winchester, you can check the information here.

Maximum UV Index Levels in Winchester for December

The chart shows the monthly maximum UV Index (UVI) for Winchester 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 Winchester typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Winchester 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 Winchester Compares to Other Months

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

This table compares monthly weather conditions in Winchester, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)99 mm (3.9 inches)88%moderate
February Weather5°C (41°F)142 mm (5.6 inches)88%moderate
March Weather9°C (48°F)131 mm (5.1 inches)87%high
April Weather13°C (56°F)138 mm (5.4 inches)84%very high
May Weather19°C (67°F)118 mm (4.6 inches)84%very high
June Weather23°C (73°F)170 mm (6.7 inches)83%extreme
July Weather25°C (78°F)96 mm (3.8 inches)79%very high
August Weather24°C (76°F)99 mm (3.9 inches)66%very high
September Weather22°C (71°F)121 mm (4.8 inches)67%very high
October Weather16°C (60°F)111 mm (4.4 inches)76%high
November Weather7°C (45°F)84 mm (3.3 inches)89%moderate
December Weather5°C (41°F)129 mm (5.1 inches)88%moderate

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