December Weather in Palo Alto, Mexico

Last updated: August 27, 2025

In December, the average temperature in Palo Alto, Mexico hovers around 13°C (57°F). Expect a range from a chilly -4°C (25°F) at its lowest to a warm 28°C (82°F) at its peak. With an average humidity of 81% and 7 mm (0.3 in) of precipitation over just 1 day, be prepared for a mix of cool and damp weather.

December Temperature in Palo Alto

In December in Palo Alto, the average temperature is 13°C (57°F), with maximums reaching 28°C (82°F) and minimums dropping as low as -4°C (25°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

December Weather in Palo Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Palo Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Palo Alto, December typically has an average temperature of 13°C (57°F), with highs reaching up to 28°C (82°F) and lows dropping to around -4°C (25°F).

Data source: Temperature data for Palo Alto generated using information from the Copernicus Climate Change Service.

December Precipitation in Palo Alto

In Palo Alto in December, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in Palo Alto

The chart displays monthly precipitation patterns in Palo Alto, 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 Palo Alto, December typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Palo Alto

In Palo Alto in December, humidity is 81%. With an average temperature of 13°C (57°F), this humidity feels like a damp blanket wrapping around you, making it uncomfortable for traveling as it saps your energy and makes even short walks feel more exhausting.

December Average Humidity in Palo Alto

This chart illustrates the average monthly humidity levels in Palo Alto, 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 Palo Alto is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Palo Alto

In Palo Alto in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Palo Alto.

Maximum UV Index Levels in Palo Alto for December

The chart shows the monthly maximum UV Index (UVI) for Palo Alto 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 Palo Alto typically reaches 8, which falls under the very high exposure category.

Data source: Palo Alto 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 Palo Alto Compares to Other Months

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

This table compares monthly weather conditions in Palo Alto, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	11 mm (0.4 inches)	74%	very high
February Weather	16°C (60°F)	9 mm (0.4 inches)	65%	extreme
March Weather	19°C (66°F)	5 mm (0.2 inches)	58%	extreme
April Weather	20°C (69°F)	3 mm (0.1 inches)	58%	extreme
May Weather	22°C (72°F)	25 mm (1.0 inches)	67%	extreme
June Weather	21°C (71°F)	111 mm (4.4 inches)	76%	extreme
July Weather	20°C (68°F)	122 mm (4.8 inches)	67%	extreme
August Weather	20°C (69°F)	93 mm (3.7 inches)	68%	extreme
September Weather	19°C (67°F)	121 mm (4.7 inches)	81%	extreme
October Weather	18°C (65°F)	44 mm (1.7 inches)	83%	extreme
November Weather	16°C (61°F)	12 mm (0.5 inches)	84%	very high
December Weather	13°C (57°F)	7 mm (0.3 inches)	81%	very high