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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 (31°F). Expect temperatures to dip as low as -21°C (-6°F) and peak at a warm 19°C (67°F). Be prepared for some precipitation, totaling 50 mm (2.0 in) over approximately 6 days, coupled with a high average humidity of 81%.

December Temperature in New Milford

In December in New Milford, the average temperature is 0°C (31°F), with maximums reaching 19°C (67°F) and minimums dropping as low as -21°C (-6°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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 (31°F), with highs reaching up to 19°C (67°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec232538476072757267533731
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 50 mm (2.0 in) over the course of 6 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 50 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec60557010215611174811101124850
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 81%. With an average temperature of 0°C (31°F), this humidity feels like a brisk chill that seeps into your bones, making travel outdoors invigorating yet a bit uncomfortable, as each breath is a reminder of the moist air enveloping you.

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 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 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.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
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-5°C (23°F)60 mm (2.4 inches)85%moderate
February Weather-4°C (25°F)55 mm (2.2 inches)85%moderate
March Weather3°C (38°F)70 mm (2.8 inches)85%high
April Weather9°C (48°F)102 mm (4.0 inches)85%very high
May Weather16°C (61°F)156 mm (6.1 inches)78%very high
June Weather22°C (72°F)111 mm (4.4 inches)80%very high
July Weather24°C (76°F)74 mm (2.9 inches)78%very high
August Weather22°C (73°F)81 mm (3.2 inches)76%very high
September Weather19°C (67°F)110 mm (4.3 inches)79%very high
October Weather12°C (53°F)112 mm (4.4 inches)83%moderate
November Weather3°C (38°F)48 mm (1.9 inches)88%moderate
December Weather0°C (31°F)50 mm (2.0 inches)81%low

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