May Weather in Crystal City, United States

Last updated: June 24, 2025

In Crystal City, United States, the average temperature in May hovers around 27°C (82°F), though it can range from a brisk 11°C (52°F) to a sweltering 42°C (108°F). Expect about 101 mm (4.0 in) of precipitation spread over 10 days, contributing to an average humidity of 81%. Plan accordingly to make the most of your stay!

May Temperature in Crystal City

In May in Crystal City, the average temperature is 27°C (82°F). Maximums can reach 42°C (108°F), while minimums can drop as low as 11°C (52°F). Be sure to pack both light clothing for the heat and a jacket for the cooler evenings during your travels.

May Weather in Crystal City: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Crystal City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crystal City, May typically has an average temperature of 27°C (82°F), with highs reaching up to 42°C (108°F) and lows dropping to around 11°C (52°F).

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

May Precipitation in Crystal City

In Crystal City in May, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

May Precipitation Trends in Crystal City

The chart displays monthly precipitation patterns in Crystal City, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Crystal City, May typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Crystal City

In Crystal City in May, humidity is 81%. With an average temperature of 27°C (82°F), this humidity feels like a warm, sticky embrace, making traveling somewhat uncomfortable as the heat clings to your skin and the air feels thick, often leaving you yearning for a refreshing breeze.

May Average Humidity in Crystal City

This chart illustrates the average monthly humidity levels in Crystal City, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Crystal City is approximately 81%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Crystal City

In Crystal City in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Crystal City.

Maximum UV Index Levels in Crystal City for May

The chart shows the monthly maximum UV Index (UVI) for Crystal City in May, 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 May, the maximum UV index in Crystal City typically reaches 11, which falls under the extreme exposure category.

Data source: Crystal City May 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 May Weather in Crystal City Compares to Other Months

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

This table compares monthly weather conditions in Crystal City, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	21 mm (0.8 inches)	79%	moderate
February Weather	15°C (59°F)	30 mm (1.2 inches)	79%	very high
March Weather	21°C (69°F)	25 mm (1.0 inches)	74%	very high
April Weather	24°C (75°F)	58 mm (2.3 inches)	76%	extreme
May Weather	27°C (82°F)	101 mm (4.0 inches)	81%	extreme
June Weather	30°C (87°F)	37 mm (1.4 inches)	76%	extreme
July Weather	32°C (89°F)	40 mm (1.6 inches)	66%	extreme
August Weather	32°C (90°F)	39 mm (1.5 inches)	58%	extreme
September Weather	29°C (84°F)	118 mm (4.7 inches)	65%	extreme
October Weather	24°C (75°F)	63 mm (2.5 inches)	74%	very high
November Weather	18°C (64°F)	33 mm (1.3 inches)	81%	high
December Weather	15°C (59°F)	25 mm (1.0 inches)	86%	moderate