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December Weather in Forest Hills, United States

Last updated: June 24, 2025

In December, the average temperature in Forest Hills, United States hovers around 7°C (46°F). Weather can be quite variable, with minimums dipping as low as -10°C (15°F), while highs reach up to 23°C (74°F). Expect approximately 150 mm (5.9 in) of precipitation spread over 11 days, and prepare for the humidity, which averages a high 88%!

December Temperature in Forest Hills

In December in Forest Hills, the average temperature is 7°C (46°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -10°C (15°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and chilly weather.

December Weather in Forest Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Forest Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest Hills, December typically has an average temperature of 7°C (46°F), with highs reaching up to 23°C (74°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec414553597077807874634845
Data source: Temperature data for Forest Hills 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 Forest Hills

In Forest Hills in December, the total precipitation amount reaches 150 mm (5.9 in) over the course of 11 days.

December Precipitation Trends in Forest Hills

The chart displays monthly precipitation patterns in Forest Hills, 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 Forest Hills, December typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10317917014811614214113312813881151
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Forest Hills

In Forest Hills in December humidity is 88%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring you to dress in layers to stay warm and dry while exploring.

December Average Humidity in Forest Hills

This chart illustrates the average monthly humidity levels in Forest Hills, 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 Forest Hills is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Forest Hills

In Forest Hills in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Forest Hills, you can check the information here.

Maximum UV Index Levels in Forest Hills for December

The chart shows the monthly maximum UV Index (UVI) for Forest Hills 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 Forest Hills typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Forest Hills 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 Forest Hills Compares to Other Months

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

This table compares monthly weather conditions in Forest Hills, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)103 mm (4.0 inches)87%moderate
February Weather7°C (45°F)179 mm (7.0 inches)87%high
March Weather11°C (53°F)170 mm (6.7 inches)85%high
April Weather15°C (59°F)148 mm (5.8 inches)82%very high
May Weather21°C (70°F)116 mm (4.6 inches)83%very high
June Weather25°C (77°F)142 mm (5.6 inches)82%extreme
July Weather27°C (80°F)141 mm (5.5 inches)78%extreme
August Weather26°C (78°F)133 mm (5.2 inches)67%very high
September Weather23°C (74°F)128 mm (5.0 inches)64%very high
October Weather17°C (63°F)138 mm (5.4 inches)74%high
November Weather9°C (49°F)81 mm (3.2 inches)87%moderate
December Weather7°C (46°F)150 mm (5.9 inches)88%moderate

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