March Weather in Rio Grande, Mexico

Last updated: August 27, 2025

The average temperature in Rio Grande, Mexico during March is a pleasant 21°C (69°F). Expect temperatures to range from a cool 8°C (46°F) at night to a warm 34°C (94°F) during the day. Rainfall is modest, with an average precipitation amount of 6 mm (0.2 in) over just 1 day. With an average humidity of 58%, it's a comfortable time to enjoy the outdoors!

March Temperature in Rio Grande

In March in Rio Grande, the average temperature is 21°C (69°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 8°C (46°F). This climate makes Rio Grande an ideal destination for travelers seeking a pleasant mix of warmth and coolness.

March Weather in Rio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Rio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande, March typically has an average temperature of 21°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 8°C (46°F).

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

March Precipitation in Rio Grande

In Rio Grande in March, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

March Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, 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 Rio Grande, March typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 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 Rio Grande

In Rio Grande in March humidity is 58%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, creating a comfortable atmosphere for traveling that encourages leisurely exploration without feeling overly sticky or oppressive.

March Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, 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 Rio Grande is approximately 58%, 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 Rio Grande

In Rio Grande in March, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Rio Grande, you can check here.

Maximum UV Index Levels in Rio Grande for March

The chart shows the monthly maximum UV Index (UVI) for Rio Grande 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 Rio Grande typically reaches 14, which falls under the extreme exposure category.

Data source: Rio Grande 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 Rio Grande Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, 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 (60°F)	6 mm (0.2 inches)	74%	very high
February Weather	18°C (64°F)	10 mm (0.4 inches)	65%	extreme
March Weather	21°C (69°F)	6 mm (0.2 inches)	58%	extreme
April Weather	22°C (73°F)	3 mm (0.1 inches)	58%	extreme
May Weather	24°C (75°F)	31 mm (1.2 inches)	67%	extreme
June Weather	22°C (72°F)	145 mm (5.7 inches)	76%	extreme
July Weather	20°C (68°F)	203 mm (8.0 inches)	67%	extreme
August Weather	20°C (68°F)	175 mm (6.9 inches)	68%	extreme
September Weather	20°C (68°F)	175 mm (6.9 inches)	81%	extreme
October Weather	19°C (67°F)	65 mm (2.6 inches)	83%	extreme
November Weather	17°C (64°F)	24 mm (0.9 inches)	84%	very high
December Weather	15°C (60°F)	3 mm (0.1 inches)	81%	very high