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December Weather in Sheffield, United States

Last updated: June 24, 2025

In December, the average temperature in Sheffield, United States is a cool 9°C (48°F). Temperatures can vary significantly, with a minimum of -7°C (20°F) and a maximum reaching 23°C (74°F). This month typically sees 145 mm (5.7 in) of precipitation spread over 10 days, accompanied by elevated humidity levels averaging around 88%. Be prepared for a mix of chilly days and occasional warmth!

December Temperature in Sheffield

In December in Sheffield, the average temperature is 9°C (48°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -7°C (20°F). It's advisable to pack layers to comfortably adapt to the varying temperatures while exploring the area.

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

The chart illustrates December temperature patterns in Sheffield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sheffield, December typically has an average temperature of 9°C (48°F), with highs reaching up to 23°C (74°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec434856617177818075655047
Data source: Temperature data for Sheffield 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 Sheffield

In Sheffield in December, the precipitation amount is 145 mm (5.7 in) spread over a duration of 10 days.

December Precipitation Trends in Sheffield

The chart displays monthly precipitation patterns in Sheffield, 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 Sheffield, December typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec11317815715912212112011511511369145
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sheffield

In Sheffield in December, humidity is 88%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill settling into your bones, making outdoor exploration feel heavy and oppressive.

December Average Humidity in Sheffield

This chart illustrates the average monthly humidity levels in Sheffield, 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 Sheffield is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sheffield

In Sheffield in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Sheffield for better planning.

Maximum UV Index Levels in Sheffield for December

The chart shows the monthly maximum UV Index (UVI) for Sheffield 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 Sheffield typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Sheffield 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 Sheffield Compares to Other Months

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

This table compares monthly weather conditions in Sheffield, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)113 mm (4.5 inches)86%moderate
February Weather9°C (49°F)178 mm (7.0 inches)85%high
March Weather13°C (56°F)157 mm (6.2 inches)84%very high
April Weather16°C (61°F)159 mm (6.3 inches)81%very high
May Weather22°C (71°F)122 mm (4.8 inches)83%extreme
June Weather25°C (78°F)121 mm (4.7 inches)83%extreme
July Weather27°C (81°F)120 mm (4.7 inches)80%extreme
August Weather27°C (80°F)115 mm (4.5 inches)73%very high
September Weather24°C (76°F)115 mm (4.5 inches)70%very high
October Weather18°C (65°F)113 mm (4.4 inches)73%high
November Weather10°C (51°F)69 mm (2.7 inches)85%moderate
December Weather9°C (48°F)145 mm (5.7 inches)88%moderate

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