Last updated: June 24, 2025
In May, the average temperature in Rio Grande City, United States reaches a warm 28°C (83°F), offering a delightful climate for outdoor activities. However, be prepared for temperature fluctuations, with lows dropping to 16°C (60°F) and highs soaring up to 41°C (106°F). Additionally, expect 77 mm (3.0 in) of precipitation spread over 7 days, contributing to an average humidity of 80%. Enjoy the vibrant atmosphere while staying cool and hydrated!
In May, in Rio Grande City, the average temperature is 28°C (83°F). Maximums can reach 41°C (106°F) and minimums can be as low as 16°C (60°F). This makes Rio Grande City an ideal destination for travelers seeking warm weather adventures, but it's important to prepare for the heat and enjoy the cooler evenings.
In Rio Grande City in May, the precipitation amount is 77 mm (3.0 in) over the course of 7 days.
In Rio Grande City in May, humidity is 80%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making travel feel sluggish and sticky, as every movement generates a sheen of perspiration that clings to your skin.
In Rio Grande City in May, 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 Rio Grande City.
UV Risk Categories
Weather in Rio Grande City varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rio Grande City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (61°F) | 18 mm (0.7 inches) | 83% | high |
| February Weather | 18°C (65°F) | 18 mm (0.7 inches) | 79% | very high |
| March Weather | 22°C (72°F) | 29 mm (1.1 inches) | 76% | very high |
| April Weather | 25°C (78°F) | 32 mm (1.3 inches) | 77% | extreme |
| May Weather | 28°C (83°F) | 77 mm (3.0 inches) | 80% | extreme |
| June Weather | 30°C (86°F) | 79 mm (3.1 inches) | 73% | extreme |
| July Weather | 30°C (87°F) | 73 mm (2.9 inches) | 66% | extreme |
| August Weather | 31°C (89°F) | 16 mm (0.6 inches) | 65% | extreme |
| September Weather | 29°C (84°F) | 97 mm (3.8 inches) | 73% | extreme |
| October Weather | 25°C (77°F) | 37 mm (1.5 inches) | 76% | very high |
| November Weather | 20°C (69°F) | 37 mm (1.5 inches) | 80% | high |
| December Weather | 17°C (64°F) | 20 mm (0.8 inches) | 86% | high |