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December Weather in Lucerne, United States

Last updated: June 24, 2025

In December, the average temperature in Lucerne, United States hovers around -4°C (24°F). Expect chilling lows of -25°C (-12°F) and, on the occasional warmer day, highs reaching 18°C (65°F). With 14 mm (0.6 in) of precipitation spread over 4 days, don't forget your umbrella! The air tends to be quite moist, with an average humidity of 89%, adding to the brisk winter chill.

December Temperature in Lucerne

In December in Lucerne, the average temperature is -4°C (24°F). Maximum temperatures can reach 18°C (65°F), while minimums can plummet to as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures, from chilly days to surprisingly warm spells.

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

The chart illustrates December temperature patterns in Lucerne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lucerne, December typically has an average temperature of -4°C (24°F), with highs reaching up to 18°C (65°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec212137445467767262443424
Data source: Temperature data for Lucerne 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 Lucerne

In Lucerne in December, the total precipitation amount is 14 mm (0.6 in) spread over a duration of 4 days.

December Precipitation Trends in Lucerne

The chart displays monthly precipitation patterns in Lucerne, 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 Lucerne, December typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec112122536727131827271714
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lucerne

In Lucerne in December, humidity is 89%. With an average temperature of -4°C (24°F), this humidity feels like an unexpected chill that can make outdoor activities uncomfortable, turning even short walks into a brisk challenge as the dampness seeps into your clothing.

December Average Humidity in Lucerne

This chart illustrates the average monthly humidity levels in Lucerne, 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 Lucerne is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%82%72%69%67%65%59%59%69%83%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lucerne

In Lucerne 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 Lucerne, you can check the information here.

Maximum UV Index Levels in Lucerne for December

The chart shows the monthly maximum UV Index (UVI) for Lucerne 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 Lucerne typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Lucerne 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 Lucerne Compares to Other Months

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

This table compares monthly weather conditions in Lucerne, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)11 mm (0.4 inches)90%moderate
February Weather-6°C (21°F)21 mm (0.8 inches)89%moderate
March Weather3°C (37°F)22 mm (0.9 inches)82%high
April Weather7°C (44°F)53 mm (2.1 inches)72%very high
May Weather12°C (54°F)67 mm (2.6 inches)69%very high
June Weather20°C (68°F)27 mm (1.1 inches)67%extreme
July Weather24°C (76°F)13 mm (0.5 inches)65%extreme
August Weather22°C (72°F)18 mm (0.7 inches)59%very high
September Weather17°C (62°F)27 mm (1.0 inches)59%very high
October Weather7°C (44°F)27 mm (1.1 inches)69%high
November Weather1°C (35°F)17 mm (0.7 inches)83%moderate
December Weather-4°C (24°F)14 mm (0.6 inches)89%moderate

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