December Weather in Schertz, United States

Last updated: June 24, 2025

In December, the average temperature in Schertz, United States hovers around 13°C (56°F). Temperatures can swing widely, with a minimum of -4°C (26°F) and a maximum reaching up to 29°C (85°F). Expect 57 mm (2.3 in) of precipitation spread over about 7 days, contributing to an average humidity of 86%.

December Temperature in Schertz

In December in Schertz, the average temperature is 13°C (56°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as -4°C (26°F). This variability in temperature makes it essential for travelers to pack layers to ensure comfort during their stay.

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

The chart illustrates December temperature patterns in Schertz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Schertz, December typically has an average temperature of 13°C (56°F), with highs reaching up to 29°C (85°F) and lows dropping to around -4°C (26°F).

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

December Precipitation in Schertz

In Schertz in December, the precipitation amount is 57 mm (2.3 in) over a span of 7 days.

December Precipitation Trends in Schertz

The chart displays monthly precipitation patterns in Schertz, 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 Schertz, December typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Schertz

In Schertz in December, humidity is 86%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or air-conditioned spaces frequently.

December Average Humidity in Schertz

This chart illustrates the average monthly humidity levels in Schertz, 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 Schertz is approximately 86%, 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 Schertz

In Schertz in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Schertz.

Maximum UV Index Levels in Schertz for December

The chart shows the monthly maximum UV Index (UVI) for Schertz 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 Schertz typically reaches 5, which falls under the moderate exposure category.

Data source: Schertz 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 Schertz Compares to Other Months

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

This table compares monthly weather conditions in Schertz, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	44 mm (1.7 inches)	79%	moderate
February Weather	13°C (55°F)	56 mm (2.2 inches)	79%	very high
March Weather	18°C (65°F)	58 mm (2.3 inches)	74%	very high
April Weather	21°C (70°F)	75 mm (3.0 inches)	76%	extreme
May Weather	25°C (78°F)	126 mm (5.0 inches)	81%	extreme
June Weather	28°C (83°F)	84 mm (3.3 inches)	76%	extreme
July Weather	29°C (85°F)	73 mm (2.9 inches)	66%	extreme
August Weather	30°C (86°F)	69 mm (2.7 inches)	58%	extreme
September Weather	27°C (81°F)	119 mm (4.7 inches)	65%	extreme
October Weather	22°C (72°F)	88 mm (3.4 inches)	74%	very high
November Weather	16°C (61°F)	49 mm (1.9 inches)	81%	high
December Weather	13°C (56°F)	57 mm (2.3 inches)	86%	moderate