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December Weather in Brooklyn, United States

Last updated: June 24, 2025

In Brooklyn, United States, the average temperature in December hovers around -1°C (30°F), with minimums plunging to -22°C (-7°F) and maximums reaching 19°C (66°F). Expect about 51 mm (2.0 in) of precipitation over 7 days, accompanied by an average humidity of 81%.

December Temperature in Brooklyn

In December in Brooklyn, the average temperature is -1°C (30°F), with maximums reaching up to 19°C (66°F) and minimums dropping as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures, from chilly conditions to milder days.

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

The chart illustrates December temperature patterns in Brooklyn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brooklyn, December typically has an average temperature of -1°C (30°F), with highs reaching up to 19°C (66°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec222337466071757266523730
Data source: Temperature data for Brooklyn 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 Brooklyn

In Brooklyn in December, the precipitation amount is 51 mm (2.0 in) over a period of 7 days.

December Precipitation Trends in Brooklyn

The chart displays monthly precipitation patterns in Brooklyn, 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 Brooklyn, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec585460101136119801021181144451
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Brooklyn

In Brooklyn in December, humidity is 81%. With an average temperature of -1°C (30°F), this humidity feels like an extra layer of chill settles in, making travel uncomfortable and the cold air cling to your skin, dampening the experience with every breath.

December Average Humidity in Brooklyn

This chart illustrates the average monthly humidity levels in Brooklyn, 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 Brooklyn is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Brooklyn

In Brooklyn 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 Brooklyn, you can visit Hourly UV Index in Brooklyn.

Maximum UV Index Levels in Brooklyn for December

The chart shows the monthly maximum UV Index (UVI) for Brooklyn 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 Brooklyn typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Brooklyn 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 Brooklyn Compares to Other Months

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

This table compares monthly weather conditions in Brooklyn, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)57 mm (2.3 inches)85%moderate
February Weather-5°C (24°F)54 mm (2.1 inches)85%moderate
March Weather3°C (37°F)60 mm (2.4 inches)85%high
April Weather8°C (47°F)101 mm (4.0 inches)85%very high
May Weather16°C (60°F)136 mm (5.3 inches)78%very high
June Weather22°C (71°F)119 mm (4.7 inches)80%very high
July Weather24°C (75°F)80 mm (3.2 inches)78%very high
August Weather22°C (72°F)102 mm (4.0 inches)76%very high
September Weather19°C (66°F)118 mm (4.6 inches)79%very high
October Weather11°C (52°F)114 mm (4.5 inches)83%moderate
November Weather3°C (37°F)44 mm (1.7 inches)88%moderate
December Weather-1°C (30°F)51 mm (2.0 inches)81%low

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