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December Weather in Oakmont, United States

Last updated: June 24, 2025

In December, the average temperature in Oakmont, United States hovers around 2°C (36°F), with potential lows of -16°C (4°F) and highs reaching 18°C (65°F). Expect 103 mm (4.1 in) of precipitation over approximately 12 days, and brace for it, as humidity levels can soar to an average of 88%.

December Temperature in Oakmont

In December in Oakmont, the average temperature is 2°C (36°F), with maximums reaching 18°C (65°F) and minimums dipping as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures, making versatile clothing essential for enjoying the varied weather.

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

The chart illustrates December temperature patterns in Oakmont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakmont, December typically has an average temperature of 2°C (36°F), with highs reaching up to 18°C (65°F) and lows dropping to around -16°C (4°F).
JanFebMarAprMayJunJulAugSepOctNovDec313541516270757367574236
Data source: Temperature data for Oakmont 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 Oakmont

In Oakmont in December, the total precipitation amount is 103 mm (4.1 in), occurring over the course of 12 days.

December Precipitation Trends in Oakmont

The chart displays monthly precipitation patterns in Oakmont, 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 Oakmont, December typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec951271091301561531488812412495103
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oakmont

In Oakmont in December, humidity is 88%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket wrapping around you, making traveling uncomfortable and energy-draining as every step through the chill seems heavier in the thick air.

December Average Humidity in Oakmont

This chart illustrates the average monthly humidity levels in Oakmont, 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 Oakmont is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oakmont

In Oakmont in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Oakmont, you can visit Hourly UV Index in Oakmont.

Maximum UV Index Levels in Oakmont for December

The chart shows the monthly maximum UV Index (UVI) for Oakmont 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 Oakmont typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Oakmont 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 Oakmont Compares to Other Months

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

This table compares monthly weather conditions in Oakmont, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)95 mm (3.7 inches)89%moderate
February Weather2°C (35°F)127 mm (5.0 inches)90%moderate
March Weather5°C (41°F)109 mm (4.3 inches)89%high
April Weather11°C (51°F)130 mm (5.1 inches)88%very high
May Weather17°C (62°F)156 mm (6.1 inches)80%very high
June Weather21°C (70°F)153 mm (6.0 inches)79%very high
July Weather24°C (75°F)148 mm (5.8 inches)74%very high
August Weather23°C (73°F)88 mm (3.5 inches)64%very high
September Weather19°C (67°F)124 mm (4.9 inches)67%very high
October Weather14°C (57°F)124 mm (4.9 inches)81%high
November Weather5°C (42°F)95 mm (3.7 inches)89%moderate
December Weather2°C (36°F)103 mm (4.1 inches)88%low

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