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December Weather in Stanford, United States

Last updated: June 24, 2025

In December, the average temperature in Stanford, United States is a brisk 5°C (42°F). Expect chilly nights with a minimum dipping as low as -12°C (11°F), while sunny days can reach a comfortable 21°C (70°F). Be prepared for 144 mm (5.7 in) of precipitation spread across 11 days, and keep in mind the high average humidity of 88% that adds to the invigorating atmosphere of the season.

December Temperature in Stanford

In December in Stanford, the average temperature is 5°C (42°F). Maximum temperatures can reach 21°C (70°F), while the minimum can drop as low as -12°C (11°F). It's advisable to pack layers for your trip, as the temperature can vary significantly throughout the day.

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

The chart illustrates December temperature patterns in Stanford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stanford, December typically has an average temperature of 5°C (42°F), with highs reaching up to 21°C (70°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec374249566773777671614642
Data source: Temperature data for Stanford 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 Stanford

In Stanford in December, the precipitation amount is 144 mm (5.7 in) during 11 days, indicating a relatively wet period for the region.

December Precipitation Trends in Stanford

The chart displays monthly precipitation patterns in Stanford, 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 Stanford, December typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10016914314413816411211812812087144
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Stanford

In Stanford in December humidity is 88%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less appealing and leading you to seek warmth indoors instead.

December Average Humidity in Stanford

This chart illustrates the average monthly humidity levels in Stanford, 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 Stanford is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Stanford

In Stanford 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 Stanford, you can check the information here.

Maximum UV Index Levels in Stanford for December

The chart shows the monthly maximum UV Index (UVI) for Stanford 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 Stanford typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Stanford 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 Stanford Compares to Other Months

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

This table compares monthly weather conditions in Stanford, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)100 mm (3.9 inches)88%moderate
February Weather5°C (42°F)169 mm (6.6 inches)88%high
March Weather9°C (49°F)143 mm (5.6 inches)87%high
April Weather13°C (56°F)144 mm (5.7 inches)84%very high
May Weather20°C (67°F)138 mm (5.4 inches)84%very high
June Weather23°C (74°F)164 mm (6.4 inches)83%extreme
July Weather25°C (78°F)112 mm (4.4 inches)79%extreme
August Weather24°C (76°F)118 mm (4.6 inches)66%very high
September Weather22°C (71°F)128 mm (5.0 inches)67%very high
October Weather16°C (61°F)120 mm (4.7 inches)76%high
November Weather8°C (46°F)87 mm (3.4 inches)89%moderate
December Weather5°C (42°F)144 mm (5.7 inches)88%moderate

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