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December Weather in Harlem Heights, United States

Last updated: June 24, 2025

In December, the average temperature in Harlem Heights, United States is a pleasant 20°C (68°F), with a minimum dipping to 8°C (46°F) and a maximum reaching 27°C (81°F). Expect about 52 mm (2.1 in) of precipitation spread over 6 days, contributing to an average humidity of 84%. Stay prepared for a mix of mild weather and occasional rain!

December Temperature in Harlem Heights

In December in Harlem Heights, the average temperature is 20°C (68°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as 8°C (46°F). This makes it a perfect time for travelers to enjoy pleasant outdoor activities and sightseeing.

December Weather in Harlem Heights: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Harlem Heights, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harlem Heights, December typically has an average temperature of 20°C (68°F), with highs reaching up to 27°C (81°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec656971757981828282807368
Data source: Temperature data for Harlem Heights 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 Harlem Heights

In Harlem Heights in December, the precipitation amount is 52 mm (2.1 in) over the course of 6 days.

December Precipitation Trends in Harlem Heights

The chart displays monthly precipitation patterns in Harlem Heights, 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 Harlem Heights, December typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec36362242122170195206170774452
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Harlem Heights

In Harlem Heights in December humidity is 84%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket, making travel a challenge as the air clings to your skin, and every step feels heavier in the mugginess.

December Average Humidity in Harlem Heights

This chart illustrates the average monthly humidity levels in Harlem Heights, 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 Harlem Heights is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%80%75%68%65%73%77%80%83%83%83%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Harlem Heights

In Harlem Heights in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Harlem Heights, you can refer to this Hourly UV Index in Harlem Heights.

Maximum UV Index Levels in Harlem Heights for December

The chart shows the monthly maximum UV Index (UVI) for Harlem Heights 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 Harlem Heights typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101212121212111086
Data source: Harlem Heights 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 Harlem Heights Compares to Other Months

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

This table compares monthly weather conditions in Harlem Heights, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)36 mm (1.4 inches)83%high
February Weather21°C (69°F)36 mm (1.4 inches)80%very high
March Weather21°C (71°F)22 mm (0.9 inches)75%very high
April Weather24°C (76°F)42 mm (1.7 inches)68%extreme
May Weather26°C (79°F)122 mm (4.8 inches)65%extreme
June Weather27°C (82°F)170 mm (6.7 inches)73%extreme
July Weather28°C (83°F)195 mm (7.7 inches)77%extreme
August Weather28°C (83°F)206 mm (8.1 inches)80%extreme
September Weather28°C (82°F)169 mm (6.7 inches)83%extreme
October Weather26°C (80°F)76 mm (3.0 inches)83%very high
November Weather23°C (73°F)44 mm (1.7 inches)83%very high
December Weather20°C (68°F)52 mm (2.1 inches)84%high

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