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December Weather in Plum City, United States

Last updated: June 24, 2025

In December, the average temperature in Plum City, United States hovers around -5°C (24°F). During this month, temperatures can dip as low as -30°C (-22°F) or rise to a maximum of 16°C (61°F). Expect approximately 56 mm (2.2 in) of precipitation spread over 8 days, with humidity levels averaging a chilly 85%.

December Temperature in Plum City

In December in Plum City, the average temperature is -5°C (24°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their visit.

December Weather in Plum City: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Plum City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plum City, December typically has an average temperature of -5°C (24°F), with highs reaching up to 16°C (61°F) and lows dropping to around -30°C (-22°F).
JanFebMarAprMayJunJulAugSepOctNovDec171733435870737063483323
Data source: Temperature data for Plum City 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 Plum City

In Plum City in December, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.

December Precipitation Trends in Plum City

The chart displays monthly precipitation patterns in Plum City, 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 Plum City, December typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec334359921451341201331091094556
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Plum City

In Plum City in December humidity is 85%. With an average temperature of -5°C (24°F), this humidity feels like a biting chill that penetrates your clothing, making every step outside feel more daunting and uninviting for traveling.

December Average Humidity in Plum City

This chart illustrates the average monthly humidity levels in Plum City, 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 Plum City is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Plum City

In Plum City in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Plum City, you can visit Hourly UV Index in Plum City.

Maximum UV Index Levels in Plum City for December

The chart shows the monthly maximum UV Index (UVI) for Plum City 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 Plum City typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Plum City 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 Plum City Compares to Other Months

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

This table compares monthly weather conditions in Plum City, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)33 mm (1.3 inches)88%low
February Weather-8°C (18°F)43 mm (1.7 inches)89%moderate
March Weather1°C (33°F)59 mm (2.3 inches)86%moderate
April Weather6°C (43°F)92 mm (3.6 inches)85%high
May Weather15°C (59°F)145 mm (5.7 inches)79%very high
June Weather21°C (70°F)134 mm (5.3 inches)80%very high
July Weather23°C (74°F)120 mm (4.7 inches)80%very high
August Weather21°C (70°F)133 mm (5.2 inches)78%very high
September Weather17°C (64°F)109 mm (4.3 inches)80%high
October Weather9°C (48°F)109 mm (4.3 inches)84%moderate
November Weather1°C (33°F)45 mm (1.8 inches)89%moderate
December Weather-5°C (24°F)56 mm (2.2 inches)85%low

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