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December Weather in Mentone, United States

Last updated: June 24, 2025

In December, the average temperature in Mentone, United States hovers around 10°C (50°F). You can expect a minimum chill of -6°C (22°F) and a pleasantly warm maximum of 28°C (83°F). With a total precipitation of just 10 mm (0.4 in) over 2 days, the humidity remains relatively high at 85%. Prepare for a month of varied weather!

December Temperature in Mentone

In December in Mentone, the average temperature is 10°C (50°F), with maximums reaching 28°C (83°F) and minimums dipping as low as -6°C (22°F). Travelers should be prepared for a wide range of temperatures, ideal for both outdoor adventures and cozy indoor experiences.

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

The chart illustrates December temperature patterns in Mentone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mentone, December typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (83°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec475161707986878679695750
Data source: Temperature data for Mentone 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 Mentone

In Mentone in December, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

December Precipitation Trends in Mentone

The chart displays monthly precipitation patterns in Mentone, 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 Mentone, December typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec12102210152816263422910
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mentone

In Mentone in December, humidity is 85%. With an average temperature of 10°C (50°F), this humidity feels like a heavy, damp blanket surrounding you, making travel feel sluggish and uncomfortable as you navigate through the thick, moist air.

December Average Humidity in Mentone

This chart illustrates the average monthly humidity levels in Mentone, 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 Mentone is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%63%61%68%70%70%67%74%75%84%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mentone

In Mentone in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Mentone.

Maximum UV Index Levels in Mentone for December

The chart shows the monthly maximum UV Index (UVI) for Mentone 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 Mentone typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810121212121211965
Data source: Mentone 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 Mentone Compares to Other Months

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

This table compares monthly weather conditions in Mentone, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)12 mm (0.5 inches)76%moderate
February Weather11°C (51°F)10 mm (0.4 inches)74%very high
March Weather16°C (62°F)22 mm (0.9 inches)63%very high
April Weather21°C (70°F)10 mm (0.4 inches)61%extreme
May Weather26°C (79°F)15 mm (0.6 inches)68%extreme
June Weather30°C (86°F)28 mm (1.1 inches)70%extreme
July Weather30°C (87°F)16 mm (0.6 inches)70%extreme
August Weather30°C (87°F)26 mm (1.0 inches)67%extreme
September Weather26°C (80°F)34 mm (1.3 inches)74%extreme
October Weather20°C (69°F)22 mm (0.9 inches)75%very high
November Weather14°C (57°F)8 mm (0.3 inches)84%high
December Weather10°C (50°F)10 mm (0.4 inches)85%moderate

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