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December Weather in New Berlin, United States

Last updated: June 24, 2025

In New Berlin, United States, the average temperature in December is a pleasant 14°C (57°F). However, temperatures can vary significantly, with a minimum of -4°C (25°F) and reaching up to a striking 30°C (86°F). Expect an average precipitation of 59 mm (2.3 in) spread across 7 days, coupled with a high average humidity of 86%, creating a uniquely vibrant atmosphere.

December Temperature in New Berlin

In December in New Berlin, the average temperature is 14°C (57°F), with maximums that can reach 30°C (86°F) and minimums that can drop as low as -4°C (25°F). This varied climate makes it essential for travelers to pack both light and warm clothing to ensure comfort during their stay.

December Weather in New Berlin: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in New Berlin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Berlin, December typically has an average temperature of 14°C (57°F), with highs reaching up to 30°C (86°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec535565707883868781726256
Data source: Temperature data for New Berlin 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 New Berlin

In New Berlin in December, the precipitation amount is 59 mm (2.3 in) over a span of 7 days.

December Precipitation Trends in New Berlin

The chart displays monthly precipitation patterns in New Berlin, 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 New Berlin, December typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec43515384116847182111785159
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in New Berlin

In New Berlin in December humidity is 86%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket enveloping you, making travel feel oppressive and uncomfortably sticky.

December Average Humidity in New Berlin

This chart illustrates the average monthly humidity levels in New Berlin, 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 New Berlin is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%74%76%81%76%66%58%65%74%81%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in New Berlin

In New Berlin 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 New Berlin.

Maximum UV Index Levels in New Berlin for December

The chart shows the monthly maximum UV Index (UVI) for New Berlin 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 New Berlin typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121211975
Data source: New Berlin 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 New Berlin Compares to Other Months

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

This table compares monthly weather conditions in New Berlin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)43 mm (1.7 inches)79%moderate
February Weather13°C (56°F)51 mm (2.0 inches)79%very high
March Weather19°C (66°F)53 mm (2.1 inches)74%very high
April Weather21°C (71°F)84 mm (3.3 inches)76%extreme
May Weather26°C (78°F)116 mm (4.6 inches)81%extreme
June Weather28°C (83°F)84 mm (3.3 inches)76%extreme
July Weather30°C (86°F)70 mm (2.8 inches)66%extreme
August Weather30°C (87°F)82 mm (3.2 inches)58%extreme
September Weather27°C (81°F)111 mm (4.4 inches)65%extreme
October Weather22°C (72°F)78 mm (3.1 inches)74%very high
November Weather17°C (62°F)51 mm (2.0 inches)81%high
December Weather14°C (57°F)59 mm (2.3 inches)86%moderate

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