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December Weather in Lunenburg, United States

Last updated: June 24, 2025

In Lunenburg, United States during December, the average temperature hovers around -6°C (22°F). Expect chilly extremes, with minimums plummeting to -30°C (-22°F) and maximums reaching a milder 14°C (57°F). This period sees 93 mm (3.7 in) of precipitation over 15 days, accompanied by an average humidity of 85%, making it a notably brisk and damp month.

December Temperature in Lunenburg

In December in Lunenburg, the average temperature is -6°C (22°F). The maximum can reach 14°C (57°F), while the minimum can drop as low as -30°C (-22°F). Be prepared for a wide range of temperatures, especially if you plan to explore the outdoors during your visit.

December Weather in Lunenburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Lunenburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lunenburg, December typically has an average temperature of -6°C (22°F), with highs reaching up to 14°C (57°F) and lows dropping to around -30°C (-22°F).
JanFebMarAprMayJunJulAugSepOctNovDec172027415362676658473222
Data source: Temperature data for Lunenburg 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 Lunenburg

In Lunenburg in December, the precipitation amount is 93 mm (3.7 in) over the course of 15 days.

December Precipitation Trends in Lunenburg

The chart displays monthly precipitation patterns in Lunenburg, 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 Lunenburg, December typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec8683731179999105886413711093
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lunenburg

In Lunenburg in December humidity is 85%. With an average temperature of -6°C (22°F), this humidity feels like an icy mist clinging to your skin, making outdoor activities uncomfortably chilly and causing your breath to cloud in the cold air, leaving you yearning for warmth and cozy indoor retreats while traveling.

December Average Humidity in Lunenburg

This chart illustrates the average monthly humidity levels in Lunenburg, 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 Lunenburg is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lunenburg

In Lunenburg 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 Lunenburg, you can visit Hourly UV Index in Lunenburg.

Maximum UV Index Levels in Lunenburg for December

The chart shows the monthly maximum UV Index (UVI) for Lunenburg 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 Lunenburg typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
Data source: Lunenburg 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 Lunenburg Compares to Other Months

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

This table compares monthly weather conditions in Lunenburg, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)86 mm (3.4 inches)91%low
February Weather-7°C (20°F)83 mm (3.3 inches)89%moderate
March Weather-3°C (28°F)73 mm (2.9 inches)85%high
April Weather5°C (41°F)117 mm (4.6 inches)84%very high
May Weather12°C (54°F)99 mm (3.9 inches)78%very high
June Weather17°C (62°F)99 mm (3.9 inches)72%very high
July Weather20°C (68°F)105 mm (4.1 inches)75%very high
August Weather19°C (66°F)88 mm (3.5 inches)74%very high
September Weather15°C (59°F)64 mm (2.5 inches)77%high
October Weather8°C (47°F)137 mm (5.4 inches)85%moderate
November Weather0°C (32°F)110 mm (4.3 inches)86%moderate
December Weather-6°C (22°F)93 mm (3.7 inches)85%low

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