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December Weather in New London, United States

Last updated: June 24, 2025

In New London, United States, the average temperature in December hovers around 12°C (53°F). Expect a chilly minimum of -2°C (29°F), while the mercury can rise to a pleasant 28°C (83°F). The month brings an average precipitation of 117 mm (4.6 in) spread over 8 days, with humidity levels reaching a damp 87%.

December Temperature in New London

In December in New London, the average temperature is 12°C (53°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, making versatile clothing a must for their trip.

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

The chart illustrates December temperature patterns in New London, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New London, December typically has an average temperature of 12°C (53°F), with highs reaching up to 28°C (83°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec495161657481848479695753
Data source: Temperature data for New London 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 London

In New London in December, the total precipitation amount is 117 mm (4.6 in) over a span of 8 days.

December Precipitation Trends in New London

The chart displays monthly precipitation patterns in New London, 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 London, December typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1081451271331441088271899756117
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in New London

In New London in December, humidity is 87%. With an average temperature of 12°C (53°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and stifling, as the air thickens and clings to your skin, sapping your energy as you navigate the sights.

December Average Humidity in New London

This chart illustrates the average monthly humidity levels in New London, 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 London is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in New London

In New London in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in New London for better planning.

Maximum UV Index Levels in New London for December

The chart shows the monthly maximum UV Index (UVI) for New London 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 London typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
Data source: New London 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 London Compares to Other Months

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

This table compares monthly weather conditions in New London, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)108 mm (4.3 inches)80%moderate
February Weather11°C (51°F)145 mm (5.7 inches)79%high
March Weather16°C (61°F)127 mm (5.0 inches)78%very high
April Weather19°C (66°F)133 mm (5.2 inches)78%very high
May Weather23°C (75°F)144 mm (5.7 inches)81%extreme
June Weather27°C (81°F)108 mm (4.2 inches)78%extreme
July Weather29°C (84°F)82 mm (3.2 inches)73%extreme
August Weather29°C (85°F)71 mm (2.8 inches)66%extreme
September Weather26°C (80°F)89 mm (3.5 inches)65%very high
October Weather21°C (69°F)97 mm (3.8 inches)72%very high
November Weather14°C (58°F)56 mm (2.2 inches)82%high
December Weather12°C (53°F)117 mm (4.6 inches)87%moderate

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