March Weather in McAllen, United States

Last updated: June 24, 2025

In McAllen, United States, the average temperature in March is a pleasant 22°C (72°F), with a minimum dipping to 3°C (38°F) and a high soaring up to 37°C (98°F). Visitors can expect an average humidity of 76%, along with 31 mm (1.2 in) of precipitation over approximately 5 days. Prepare for a delightful mix of warmth and occasional showers!

March Temperature in McAllen

In March in McAllen, the average temperature is 22°C (72°F). Maximums can reach 37°C (98°F), while minimums can drop as low as 3°C (38°F). It's advisable to pack layers and stay hydrated while exploring the diverse weather conditions.

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

The chart illustrates March 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, March typically has an average temperature of 22°C (72°F), with highs reaching up to 37°C (98°F) and lows dropping to around 3°C (38°F).

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

March Precipitation in McAllen

In McAllen in March, the precipitation amount is 31 mm (1.2 in) spread over 5 days.

March Precipitation Trends in McAllen

The chart displays monthly precipitation patterns in McAllen, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In McAllen, March typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

March Humidity in McAllen

In McAllen in March humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

March Average Humidity in McAllen

This chart illustrates the average monthly humidity levels in McAllen, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in McAllen is approximately 76%, offering insight into how humid the weather typically is during this month.

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

March UV Index in McAllen

In McAllen in March, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in McAllen.

Maximum UV Index Levels in McAllen for March

The chart shows the monthly maximum UV Index (UVI) for McAllen in March, 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 March, the maximum UV index in McAllen typically reaches 10, which falls under the very high exposure category.

Data source: McAllen March 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 March 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 March’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 March’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