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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 5°C (41°F). Temperatures can dip as low as -14°C (7°F) or soar to a pleasant 25°C (77°F). Expect 49 mm (1.9 in) of precipitation over about 6 days, and keep in mind the average humidity is a high 87%, making the air feel quite damp.

December Temperature in Lebanon

In December in Lebanon, the average temperature is 5°C (41°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures during your travels.

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 5°C (41°F), with highs reaching up to 25°C (77°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748556675797673594641
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 precipitation amount is 49 mm (1.9 in) over the course of 6 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 49 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec7976130144167969592521366349
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 87%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket enveloping you, making every step seem laborious and the chill more biting, which can be quite challenging for traveling.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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 Weather1°C (34°F)79 mm (3.1 inches)81%moderate
February Weather3°C (37°F)76 mm (3.0 inches)78%high
March Weather9°C (49°F)130 mm (5.1 inches)76%high
April Weather13°C (55°F)144 mm (5.7 inches)78%very high
May Weather19°C (66°F)167 mm (6.6 inches)83%very high
June Weather24°C (76°F)96 mm (3.8 inches)83%extreme
July Weather26°C (79°F)95 mm (3.7 inches)78%extreme
August Weather25°C (77°F)92 mm (3.6 inches)68%very high
September Weather23°C (73°F)52 mm (2.1 inches)64%very high
October Weather15°C (59°F)136 mm (5.4 inches)70%high
November Weather8°C (46°F)63 mm (2.5 inches)83%moderate
December Weather5°C (41°F)49 mm (1.9 inches)87%moderate

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