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December Weather in Pinon Hills, United States

Last updated: June 24, 2025

In December, the average temperature in Pinon Hills, United States hovers around 8°C (46°F). Visitors can expect a varied climate, with temperatures dipping as low as -4°C (24°F) and reaching highs of 21°C (71°F). Rainfall is moderate, with an estimated 65 mm (2.6 in) spread over about 5 days. Additionally, the average humidity sits at a comfortable 76%, ensuring a crisp yet pleasant atmosphere.

December Temperature in Pinon Hills

In December in Pinon Hills, the average temperature is 8°C (46°F). Maximums can reach 21°C (71°F) and minimums can be as low as -4°C (24°F). Be prepared for a mix of cool and mild weather, making it a great time for layered clothing while exploring the sights.

December Weather in Pinon Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Pinon Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pinon Hills, December typically has an average temperature of 8°C (46°F), with highs reaching up to 21°C (71°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec464750586373797973635546
Data source: Temperature data for Pinon Hills 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 Pinon Hills

In Pinon Hills, in December, the precipitation amount is 65 mm (2.6 in) over a period of 5 days.

December Precipitation Trends in Pinon Hills

The chart displays monthly precipitation patterns in Pinon Hills, 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 Pinon Hills, December typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec565368221561116772065
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Pinon Hills

In Pinon Hills in December, humidity is 76%. With an average temperature of 8°C (46°F), this humidity feels like a chilly dampness that seeps into your bones, making travel less enjoyable as the cold air mixes with the moisture, creating an uneasy, heavy atmosphere that can hinder your outdoor plans.

December Average Humidity in Pinon Hills

This chart illustrates the average monthly humidity levels in Pinon Hills, 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 Pinon Hills is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%82%76%68%58%52%46%39%48%59%72%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Pinon Hills

In Pinon Hills 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 Pinon Hills for better planning.

Maximum UV Index Levels in Pinon Hills for December

The chart shows the monthly maximum UV Index (UVI) for Pinon Hills 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 Pinon Hills typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110754
Data source: Pinon Hills 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 Pinon Hills Compares to Other Months

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

This table compares monthly weather conditions in Pinon Hills, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)56 mm (2.2 inches)78%moderate
February Weather8°C (48°F)53 mm (2.1 inches)82%high
March Weather10°C (51°F)68 mm (2.7 inches)75%very high
April Weather15°C (58°F)21 mm (0.8 inches)68%very high
May Weather17°C (63°F)15 mm (0.6 inches)57%extreme
June Weather23°C (74°F)6 mm (0.2 inches)52%extreme
July Weather26°C (79°F)11 mm (0.4 inches)46%extreme
August Weather26°C (79°F)16 mm (0.6 inches)39%extreme
September Weather23°C (73°F)7 mm (0.3 inches)48%very high
October Weather17°C (63°F)6 mm (0.3 inches)59%high
November Weather13°C (55°F)20 mm (0.8 inches)72%moderate
December Weather8°C (46°F)65 mm (2.6 inches)76%moderate

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