December Weather in Stanford, United States

Last updated: February 24, 2025

In Stanford, United States, December presents a mild yet variable climate, with maximum temperatures reaching 22°C (72°F) and a comfortable average of 11°C (52°F). As the month unfolds, temperatures can dip to a brisk 3°C (37°F), highlighting the transition into winter. December also sees 88 mm (3.5 in) of precipitation over approximately 9 days, contributing to the region's lush greenery. With an humidity level of 80%, residents and visitors alike experience a crisp, refreshing atmosphere that characterizes this enchanting month.

December Temperature in Stanford

In Stanford, United States, December marks a subtle transition as temperatures begin to dip, with a minimum of 3°C (37°F) and an average hovering around 11°C (52°F). The month showcases a gentle decline from the relatively warmer November, yet still allows for mild daytime highs that can reach 22°C (72°F). This gradual cooldown foreshadows the chillier months ahead while maintaining a comfortable climate that invites outdoor explorations. As the year winds down, the weather remains agreeable, offering a balance between the crisp air of winter and the lingering warmth of autumn.

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.
JanFebMarAprMayJunJulAugSepOctNovDec525354565863636565625652
Data source: Temperature data for Stanford generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Stanford

In December, Stanford experiences 88 mm (3.5 in) of precipitation over 9 days, marking a noticeable uptick from the dry summer months and a significant increase compared to the low volumes recorded in June and July. This month serves as a transitional period, bridging the previous wetter months of November with the drier winter ahead. The precipitation pattern showcases a shift toward increased rainfall with December’s totals resembling those of the earlier winter months such as January and February, where January leads the pack with a hefty 105 mm (4.1 in). Overall, the month stands out within the annual cycle, highlighting the changing climate and the importance of winter rains for replenishing the local ecosystem.

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.
JanFebMarAprMayJunJulAugSepOctNovDec1051008633242012244788
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Stanford

December in Stanford welcomes a slight rise in humidity, reaching 80% as the year draws to a close. This figure reflects a trend of increased moisture levels, particularly after the drier months of summer when humidity dipped to a comfortable 54% in August. As autumn transitions to winter, there's a noticeable uptick, with November's humidity at 78% paving the way for December's elevation. This fluctuating pattern showcases how the climate shifts, with the winter months presenting a more humid atmosphere compared to the drier summer season, ultimately enriching the local environment as the year wraps up.

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, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Stanford

In December, Stanford experiences a mild UV Index of 3, placing it in the moderate exposure category, with a burn time of approximately 30 minutes. This marks the end of a year characterized by significant fluctuations in UV radiation; the index peaked at 11 during the summer months of June and July, reflecting an extreme level of sun exposure, while earlier months like January and February also saw moderate levels at 3 and 5, respectively. As the year closes, residents can appreciate the reduced sun intensity, making December a safer time for outdoor activities without the risk of rapid sunburn. For a comprehensive understanding of UV levels throughout the year, explore more at Stanford UV Index.

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.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
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.

December Sunshine in Stanford

In Stanford, United States, December offers a charming glimpse into the transition from fall’s vibrant hues to winter’s calm, with 194 hours of sunshine gracing the month. Although sunlight begins to wane as winter settles in, December still benefits from a significant number of bright hours, showcasing a decline from the sun-drenched days of summer when the city basked in 355 hours of light during June. Following a steady increase towards the peak in May and June, the hours gradually recede, yet they remain notably higher than the chilly beginnings of the year, such as 151 hours in January. This trend reflects a seasonal rhythm, inviting both residents and visitors to enjoy the soft winter glow that adorns Stanford's landscape during this transitional month.

Monthly Sunshine Duration in Stanford: December Highlighted

The December sunshine duration represents the total number of hours Stanford experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec151h216h263h296h341h355h349h320h299h276h225h194h
Data source: Stanford December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Stanford During December

In Stanford, California, the likelihood of enjoying sunny weather in December dips to 35%, marking it as one of the cloudier months of the year. This trend aligns with the overall pattern of decreasing sunshine as the year progresses into the winter months. While the sunniness peaks in spring and early summer—especially in May at 62%—December's chilly weather contrasts sharply with those brighter days. Following November's 46% chance of sun, December offers a notable decline. As the days grow shorter and temperatures drop, residents and visitors alike may find themselves longing for the sunnier months, when the skies above Stanford are filled with warmth and light.

Percentage of Sunny Days in December in Stanford

The chart illustrates the percentage of sunny days in Stanford throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Stanford experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%55%58%45%62%57%48%61%58%53%46%35%
Data source: Stanford December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Stanford in December

As December unfolds in Stanford, the days reach their shortest duration, with just 9 hours of daylight illuminating the landscape. This trend marks a significant decline from earlier months, where daylight peaks at 14 hours in both May and June. Following the summer solstice, the gradual reduction in daylight is evident, as hours dwindle through the autumn months, leading to the year's twilight. Interestingly, the daylight hours will begin to increase again come January, setting the stage for a gradual rebirth of light and warmth as the year turns. This cyclical pattern underscores the rhythm of the seasons, inviting reflections on both nature's consistency and the anticipation of brighter days ahead.

Average Daylight Hours in Stanford for December

The chart illustrates the variation in daylight duration in Stanford throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 54m10h 49m11h 59m13h 11m14h 11m14h 41m14h 25m13h 31m12h 22m11h 10m10h 8m9h 36m
Data source: Stanford daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Stanford

As December arrives in Stanford, United States, the average wind speed settles at 2.4 m/s (5 mph), mirroring the briskness of early winter. This month’s winds reflect a mild increase compared to the preceding November, which recorded the year's lowest average at 1.8 m/s (4 mph). Throughout the year, wind speeds generally fluctuate within a narrow band, peaking in May at 3.0 m/s (7 mph). It’s interesting to note how the gentle breezes of summer transition into the cooler, steadier winds of winter. This gradual shift underscores a consistent trend of varying yet relatively calm winds, making December a time when the environment embraces a quieter rhythm before the more invigorating gusts of spring return.

Average December Wind Speed in Stanford

The chart displays monthly wind speed patterns in Stanford, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.52.62.63.02.72.32.12.02.41.82.4 m/s
Data source: Stanford December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Stanford Compares to Other Months

The weather in Stanford changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Stanford and find detailed weather information for every month.

In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), with an average of 11°C (52°F). The month experiences about 88 mm (3.5 in) of precipitation over 9 days, accompanied by humidity levels around 80%. In contrast, January sees slightly cooler minimum temperatures at 2°C (36°F) but an increase in the maximum temperature to 24°C (75°F), maintaining the same average of 11°C (52°F). Precipitation rises to 105 mm (4.1 in) over 7 days, with humidity slightly higher at 82%. For more details, you can check Stanford weather in January.

December and February exhibit quite similar temperatures, with December having a minimum of 3°C (37°F) and an average of 11°C (52°F), while February features a slightly lower minimum of 2°C (36°F) but an average of 11°C (53°F). Interestingly, February records a maximum temperature of 24°C (76°F), surpassing December's maximum of 22°C (72°F). In terms of precipitation, February sees a slight increase, with 100 mm (3.9 in) over 8 days compared to December's 88 mm (3.5 in) across 9 days, and humidity tends to be slightly higher in February at 84% compared to December’s 80%. For more detailed weather insights, you can check Stanford weather in February.

In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), with an average temperature of 11°C (52°F). The month experiences around 88 mm (3.5 in) of precipitation over 9 days, accompanied by a humidity level of 80%. In contrast, March sees slightly warmer weather with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 25°C (78°F) and an average of 12°C (54°F). Precipitation is almost similar, totaling 86 mm (3.4 in) over 11 days, with a marginally higher humidity of 82%. To gain more detailed insights into March weather patterns, you can explore Stanford weather in March.

In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), with an average of 11°C (52°F). The month is characterized by relatively high humidity at 80% and significant rainfall, averaging 88 mm (3.5 in) over 9 days. In contrast, April brings a noticeable warming trend, with minimum temperatures of 6°C (42°F) and maximums reaching 30°C (87°F); the average temperature is 13°C (57°F). Precipitation drops to 33 mm (1.3 in) over just 5 days, and humidity remains slightly lower at 78%. For more specific information on April weather conditions, you can refer to Stanford weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a chilly 3°C (37°F) to a pleasant 22°C (72°F), with an average of 11°C (52°F). The month experiences considerable precipitation of 88 mm (3.5 in) over 9 days, resulting in high humidity levels of 80%. In contrast, May offers warmer weather, with minimum temperatures starting at 8°C (46°F) and peaking at a comfortable 29°C (84°F), averaging 15°C (59°F). The month is significantly drier, with only 24 mm (0.9 in) of rainfall over just 2 days and lower humidity at 71%. For more details about the weather in May, you can check Stanford weather in May.

When comparing the weather in December and June, the difference is striking. December features cooler temperatures, with a minimum of 3°C (37°F) and an average of 11°C (52°F), while June enjoys much warmer conditions, with a minimum of 10°C (49°F) and an average of 17°C (63°F), peaking at a hot 35°C (96°F). Additionally, December experiences significantly more rainfall, averaging 88 mm (3.5 in) across 9 days, whereas June typically sees minimal precipitation, just 2 mm (0.1 in) without any rainy days. The humidity levels also differ, with December being more humid at 80%, compared to June's 64%. For more details on June weather, you can check this link: Stanford weather in June.

December and July present contrasting weather experiences. In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), with an average of 11°C (52°F). The month sees considerable precipitation, totaling 88 mm (3.5 in) over about 9 days, accompanied by high humidity levels at 80%. In stark contrast, July boasts much warmer temperatures, with a minimum of 11°C (53°F), an average of 17°C (63°F), and a peak of 29°C (84°F). Notably, July is dry, with no recorded precipitation and lower humidity at 58%. For a deeper look at July’s weather, visit Stanford weather in July.

When comparing the weather in December and August, a stark contrast emerges. December typically features cooler temperatures with a minimum of 3°C (37°F) and an average of 11°C (52°F), reaching a maximum of 22°C (72°F). This month also sees considerable precipitation, averaging 88 mm (3.5 in) over about 9 days, coupled with high humidity at around 80%. In contrast, August boasts much warmer conditions, with a minimum of 12°C (54°F), an average of 18°C (65°F), and a maximum that can soar to 35°C (96°F). Remarkably, August experiences no rainfall at all, making it a dry month with only 54% humidity. For more details on August weather, you can visit Stanford weather in August.

In December, temperatures range from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), with an average of 11°C (52°F). The month is characterized by frequent rainfall, with precipitation recorded on about 9 days and a total of 88 mm (3.5 in), as well as higher humidity levels at 80%. In contrast, September enjoys significantly warmer weather, with temperatures ranging from a minimum of 10°C (50°F) to an impressive maximum of 39°C (103°F) and an average of 18°C (66°F). The month is notably dry, with only 2 mm (0.1 in) of precipitation and no rainy days, resulting in a lower humidity of 55%. For more detailed information about the weather in September, you can visit Stanford weather in September.

The weather in December is generally cooler than in October, with minimum temperatures reaching 3°C (37°F) compared to October's warmer minimum of 7°C (45°F). The average temperature in December is 11°C (52°F), significantly lower than October's 17°C (63°F). While December experiences higher humidity at 80%, October boasts a much drier climate with only 62% humidity. Additionally, December sees more precipitation, with an average of 88 mm (3.5 in) spread over 9 rainy days, whereas October has a relatively dry month with just 24 mm (0.9 in) of rain on only 1 day. For more specific details about October weather, you can visit Stanford weather in October.

In comparing the weather patterns of December and November, December tends to be slightly cooler, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 22°C (72°F), whereas November experiences a broader range with a minimum of 4°C (39°F) and a maximum of 27°C (80°F). Notably, December is wetter, receiving 88 mm (3.5 in) of precipitation over 9 days, compared to November's 47 mm (1.9 in) over just 5 days. Humidity levels are fairly similar, with December at 80% and November at 78%, indicating a slightly more damp environment in December. For a detailed look at the weather in November, you can check Stanford weather in November.

Compare Stanford's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Stanford

As December unfolds in Stanford, it's a month where the crisp winter air sets a distinct tone compared to other seasons. With temperatures averaging around 11°C (52°F), the chilly nights can dip to a brisk 3°C (37°F), making cozy layers a necessity. While the maximum can reach a pleasant 22°C (72°F), this month's humidity levels soar to 80%, adding a touch of dampness to the cool air. December also brings more frequent rain, averaging 88 mm (3.5 in) over roughly 9 days, refreshing the landscape and ushering in the holiday spirit. For anyone considering a visit, it’s an ideal time to experience Stanford's serene winter charm and vibrant atmosphere. Discover more about the weather throughout the year at Stanford Climate.