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December Weather in Lebanon, United States

Last updated: June 24, 2025

In December, the average temperature in Lebanon, United States hovers around 6°C (42°F). During this time, temperatures can range from a chilly -11°C (12°F) to a mild 22°C (72°F). Expect 140 mm (5.5 in) of precipitation over about 10 days, contributing to a relatively high average humidity of 88%. Stay prepared for varying weather conditions!

December Temperature in Lebanon

In December in Lebanon, the average temperature is 6°C (42°F), with maximums reaching 22°C (72°F) and minimums dropping as low as -11°C (12°F). Travelers should be prepared for a wide range of temperatures during this month, packing both warm and cooler clothing.

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

The chart illustrates December temperature patterns in Lebanon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lebanon, December typically has an average temperature of 6°C (42°F), with highs reaching up to 22°C (72°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec374249576874787672614642
Data source: Temperature data for Lebanon 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 Lebanon

In Lebanon in December, the total precipitation amount is 140 mm (5.5 in) spread over a period of 10 days.

December Precipitation Trends in Lebanon

The chart displays monthly precipitation patterns in Lebanon, 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 Lebanon, December typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec10317014615012116812211812612092141
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lebanon

In Lebanon in December, humidity is 88%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to your skin and saps your energy.

December Average Humidity in Lebanon

This chart illustrates the average monthly humidity levels in Lebanon, 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 Lebanon is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lebanon

In Lebanon 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 Lebanon, you can check the information here.

Maximum UV Index Levels in Lebanon for December

The chart shows the monthly maximum UV Index (UVI) for Lebanon 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 Lebanon typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
Data source: Lebanon 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 Lebanon Compares to Other Months

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

This table compares monthly weather conditions in Lebanon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)103 mm (4.0 inches)87%moderate
February Weather5°C (42°F)169 mm (6.7 inches)86%moderate
March Weather9°C (49°F)146 mm (5.7 inches)86%high
April Weather14°C (57°F)150 mm (5.9 inches)82%very high
May Weather20°C (68°F)121 mm (4.7 inches)82%very high
June Weather23°C (74°F)168 mm (6.6 inches)83%extreme
July Weather26°C (78°F)122 mm (4.8 inches)80%extreme
August Weather25°C (76°F)118 mm (4.7 inches)74%very high
September Weather22°C (72°F)126 mm (5.0 inches)71%very high
October Weather16°C (61°F)120 mm (4.7 inches)78%high
November Weather8°C (46°F)92 mm (3.6 inches)88%moderate
December Weather6°C (42°F)140 mm (5.5 inches)88%moderate

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