July Weather in McAllen, United States

Last updated: June 24, 2025

The average temperature in McAllen, United States during July hovers around 30°C (87°F), making it quite a warm time of year. Expect a minimum of 22°C (71°F) and highs reaching a sizzling 42°C (108°F). Rainfall isn't frequent, with an average precipitation of just 100 mm (3.9 in) spread over 6 days. The average humidity sits at a comfortable 66%, adding to the tropical atmosphere.

July Temperature in McAllen

In July in McAllen, the average temperature is 30°C (87°F). The maximum can reach 42°C (108°F), while the minimum can be as low as 22°C (71°F). Be prepared for warm weather and pack accordingly if you're planning to visit during this time!

July Weather in McAllen: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in McAllen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McAllen, July typically has an average temperature of 30°C (87°F), with highs reaching up to 42°C (108°F) and lows dropping to around 22°C (71°F).

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

July Precipitation in McAllen

In McAllen in July, the precipitation amount is 100 mm (3.9 in) spread over 6 days.

July Precipitation Trends in McAllen

The chart displays monthly precipitation patterns in McAllen, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In McAllen, July typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 6 days.

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

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Millimeters (mm) Inches (in)

July Humidity in McAllen

In McAllen in July, humidity is 66%. With an average temperature of 30°C (87°F), this humidity feels like a warm, sticky embrace that clings to your skin and makes traveling feel heavy and slow.

July Average Humidity in McAllen

This chart illustrates the average monthly humidity levels in McAllen, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in McAllen is approximately 66%, offering insight into how humid the weather typically is during this month.

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

July UV Index in McAllen

In McAllen in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in McAllen.

Maximum UV Index Levels in McAllen for July

The chart shows the monthly maximum UV Index (UVI) for McAllen in July, 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 July, the maximum UV index in McAllen typically reaches 12, which falls under the extreme exposure category.

Data source: McAllen July 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 July Weather in McAllen Compares to Other Months

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

This table compares monthly weather conditions in McAllen, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	20 mm (0.8 inches)	83%	high
February Weather	18°C (65°F)	21 mm (0.8 inches)	79%	very high
March Weather	22°C (72°F)	31 mm (1.2 inches)	76%	very high
April Weather	25°C (78°F)	31 mm (1.2 inches)	77%	extreme
May Weather	28°C (83°F)	87 mm (3.4 inches)	80%	extreme
June Weather	30°C (86°F)	81 mm (3.2 inches)	73%	extreme
July Weather	30°C (87°F)	100 mm (3.9 inches)	66%	extreme
August Weather	31°C (88°F)	22 mm (0.9 inches)	65%	extreme
September Weather	29°C (84°F)	96 mm (3.8 inches)	73%	extreme
October Weather	25°C (77°F)	51 mm (2.0 inches)	76%	very high
November Weather	20°C (69°F)	30 mm (1.2 inches)	80%	high
December Weather	18°C (64°F)	21 mm (0.8 inches)	86%	high