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December Weather in Twentynine Palms, United States

Last updated: June 24, 2025

In December, the average temperature in Twentynine Palms, United States hovers around 10°C (51°F), with minimums dipping to -1°C (30°F) and maximums reaching up to 24°C (76°F). Expect a precipitation amount of 19 mm (0.7 in) spread over 2 days. To top it off, the average humidity sits comfortably at 75%, making it a month of subtle fluctuations and diverse weather.

December Temperature in Twentynine Palms

In December in Twentynine Palms, the average temperature is 10°C (51°F). The maximum can reach 24°C (76°F), and the minimum can be as low as -1°C (30°F). It's important to be prepared for a wide range of temperatures if you're planning to travel during this time.

December Weather in Twentynine Palms: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Twentynine Palms, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Twentynine Palms, December typically has an average temperature of 10°C (51°F), with highs reaching up to 24°C (76°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec525460697586929183706050
Data source: Temperature data for Twentynine Palms 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 Twentynine Palms

In Twentynine Palms in December, the precipitation amount is 19 mm (0.7 in) over a span of 2 days.

December Precipitation Trends in Twentynine Palms

The chart displays monthly precipitation patterns in Twentynine Palms, 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 Twentynine Palms, December typically receives around 19 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec15171483113735519
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Twentynine Palms

In Twentynine Palms in December humidity is 75%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket wrapping around you, making every step outside feel laborious and damp, perfect for cozy indoor exploration but challenging for outdoor adventures.

December Average Humidity in Twentynine Palms

This chart illustrates the average monthly humidity levels in Twentynine Palms, 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 Twentynine Palms is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Twentynine Palms

In Twentynine Palms in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Twentynine Palms for better planning.

Maximum UV Index Levels in Twentynine Palms for December

The chart shows the monthly maximum UV Index (UVI) for Twentynine Palms 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 Twentynine Palms typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110854
Data source: Twentynine Palms 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 Twentynine Palms Compares to Other Months

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

This table compares monthly weather conditions in Twentynine Palms, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)15 mm (0.6 inches)76%moderate
February Weather12°C (54°F)17 mm (0.7 inches)80%high
March Weather15°C (60°F)14 mm (0.6 inches)69%very high
April Weather21°C (70°F)8 mm (0.3 inches)57%very high
May Weather24°C (76°F)2 mm (0.1 inches)45%extreme
June Weather30°C (87°F)1 mm (0.0 inches)34%extreme
July Weather33°C (92°F)13 mm (0.5 inches)29%extreme
August Weather33°C (91°F)7 mm (0.3 inches)28%extreme
September Weather29°C (84°F)3 mm (0.1 inches)41%very high
October Weather21°C (70°F)5 mm (0.2 inches)54%very high
November Weather15°C (60°F)5 mm (0.2 inches)68%moderate
December Weather10°C (51°F)19 mm (0.7 inches)75%moderate

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