Last updated: June 24, 2025
In Grand Tower, United States, the average temperature in May hovers around 20°C (68°F), providing a pleasant climate. However, temperatures can swing from a cool 3°C (38°F) to a scorching 33°C (91°F). Visitors should be prepared for 145 mm (5.7 in) of precipitation spread across 13 days, contributing to an average humidity of 82%. Make sure to pack accordingly to enjoy all that this enchanting destination has to offer!
In May in Grand Tower, the average temperature is 20°C (68°F). Maximums can reach 33°C (91°F), while minimums can drop to 3°C (38°F). It's a great time to travel to Grand Tower, as you'll experience mild days with some potential for warmer afternoons and cooler evenings.
In Grand Tower in May, the precipitation amount is 145 mm (5.7 in) over the course of 13 days.
In Grand Tower in May humidity is 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.
In Grand Tower 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 Grand Tower.
UV Risk Categories
Weather in Grand Tower varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Grand Tower, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 95 mm (3.7 inches) | 86% | moderate |
| February Weather | 3°C (38°F) | 111 mm (4.4 inches) | 84% | high |
| March Weather | 9°C (49°F) | 143 mm (5.6 inches) | 84% | high |
| April Weather | 14°C (57°F) | 150 mm (5.9 inches) | 80% | very high |
| May Weather | 20°C (68°F) | 145 mm (5.7 inches) | 82% | extreme |
| June Weather | 25°C (77°F) | 88 mm (3.5 inches) | 83% | extreme |
| July Weather | 27°C (80°F) | 89 mm (3.5 inches) | 79% | very high |
| August Weather | 25°C (77°F) | 94 mm (3.7 inches) | 76% | very high |
| September Weather | 23°C (73°F) | 74 mm (2.9 inches) | 75% | very high |
| October Weather | 16°C (61°F) | 115 mm (4.5 inches) | 74% | high |
| November Weather | 7°C (46°F) | 89 mm (3.5 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 82 mm (3.2 inches) | 88% | moderate |