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December Weather in New Milford, United States

Last updated: June 24, 2025

In December, the average temperature in New Milford, United States hovers around 0°C (32°F), with temperatures ranging from a chilly -17°C (3°F) to a mild 16°C (61°F). Be prepared for 90 mm (3.5 in) of precipitation over approximately 12 days, and expect a high average humidity of 85%. Stay warm and dry!

December Temperature in New Milford

In December in New Milford, the average temperature is 0°C (32°F). Maximum temperatures can reach 16°C (61°F), while the minimum can drop as low as -17°C (3°F). It’s essential to pack accordingly for your travels, as you may experience a wide range of temperatures.

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

The chart illustrates December temperature patterns in New Milford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Milford, December typically has an average temperature of 0°C (32°F), with highs reaching up to 16°C (61°F) and lows dropping to around -17°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec273036475867727064543932
Data source: Temperature data for New Milford 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 Milford

In New Milford in December, the precipitation amount is 90 mm (3.5 in) spread over 12 days.

December Precipitation Trends in New Milford

The chart displays monthly precipitation patterns in New Milford, 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 Milford, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec74938911313196112107931359290
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in New Milford

In New Milford in December, humidity is 85%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that clings to your clothes, making every step feel more arduous and the air heavy, which can dampen the enthusiasm for exploring the surroundings.

December Average Humidity in New Milford

This chart illustrates the average monthly humidity levels in New Milford, 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 Milford is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in New Milford

In New Milford 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 New Milford, you can visit Hourly UV Index in New Milford.

Maximum UV Index Levels in New Milford for December

The chart shows the monthly maximum UV Index (UVI) for New Milford 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 Milford typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: New Milford 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 Milford Compares to Other Months

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

This table compares monthly weather conditions in New Milford, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)74 mm (2.9 inches)87%moderate
February Weather-1°C (30°F)93 mm (3.6 inches)85%moderate
March Weather2°C (36°F)89 mm (3.5 inches)85%high
April Weather8°C (47°F)113 mm (4.4 inches)83%very high
May Weather15°C (58°F)131 mm (5.2 inches)75%very high
June Weather19°C (67°F)96 mm (3.8 inches)73%very high
July Weather22°C (73°F)112 mm (4.4 inches)65%very high
August Weather21°C (71°F)107 mm (4.2 inches)62%very high
September Weather18°C (64°F)93 mm (3.7 inches)66%very high
October Weather12°C (54°F)135 mm (5.3 inches)79%high
November Weather4°C (39°F)92 mm (3.6 inches)87%moderate
December Weather0°C (32°F)90 mm (3.5 inches)85%low

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