December Weather in Dilley, United States

Last updated: June 24, 2025

In Dilley, United States, the average temperature in December hovers around 15°C (59°F). Expect a range from a chilly -3°C (28°F) to a warm 33°C (91°F). With an average precipitation of 28 mm (1.1 in) spread over 4 days, and a humidity level of 86%, be prepared for a mix of conditions.

December Temperature in Dilley

In December in Dilley, the average temperature is 15°C (59°F). Maximums can reach 33°C (91°F), while minimums can drop as low as -3°C (28°F). Pack layers to enjoy the diverse weather conditions during your travels!

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

The chart illustrates December temperature patterns in Dilley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dilley, December typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (91°F) and lows dropping to around -3°C (28°F).

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

December Precipitation in Dilley

In Dilley in December, the precipitation amount is 28 mm (1.1 in) over the course of 4 days.

December Precipitation Trends in Dilley

The chart displays monthly precipitation patterns in Dilley, 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 Dilley, December typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 4 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 Dilley

In Dilley in December, humidity is 86%. With an average temperature of 15°C (59°F), this humidity feels like a warm, damp blanket that clings to your skin, making traveling slightly uncomfortable but still manageable if you stay hydrated and take breaks in shaded areas.

December Average Humidity in Dilley

This chart illustrates the average monthly humidity levels in Dilley, 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 Dilley 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 Dilley

In Dilley 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 Dilley.

Maximum UV Index Levels in Dilley for December

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

Data source: Dilley 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 Dilley Compares to Other Months

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

This table compares monthly weather conditions in Dilley, 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)	25 mm (1.0 inches)	79%	moderate
February Weather	15°C (59°F)	32 mm (1.3 inches)	79%	very high
March Weather	20°C (69°F)	34 mm (1.3 inches)	74%	very high
April Weather	23°C (74°F)	49 mm (1.9 inches)	76%	extreme
May Weather	27°C (81°F)	104 mm (4.1 inches)	81%	extreme
June Weather	30°C (86°F)	47 mm (1.8 inches)	76%	extreme
July Weather	31°C (88°F)	53 mm (2.1 inches)	66%	extreme
August Weather	32°C (89°F)	35 mm (1.4 inches)	58%	extreme
September Weather	28°C (84°F)	107 mm (4.2 inches)	65%	extreme
October Weather	24°C (75°F)	60 mm (2.4 inches)	74%	very high
November Weather	18°C (64°F)	35 mm (1.4 inches)	81%	high
December Weather	15°C (59°F)	28 mm (1.1 inches)	86%	moderate