Last updated: June 24, 2025
In Grand Mound, United States, the average temperature in May hovers around 17°C (62°F), with daily variations ranging from a chilly -1°C (31°F) to a warm 34°C (94°F). Visitors should be prepared for approximately 140 mm (5.5 in) of precipitation over 14 days, contributing to an average humidity level of 78%. Whether you're exploring the sights or enjoying local cuisine, the climate offers a diverse experience!
In May in Grand Mound, the average temperature is 17°C (62°F). Maximum temperatures can reach 34°C (94°F), while the minimum can drop as low as -1°C (31°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and chilly nights.
In Grand Mound in May, the precipitation amount is 140 mm (5.5 in) over the course of 14 days.
In Grand Mound in May, humidity is 78%. With an average temperature of 17°C (62°F), this humidity feels like a warm, enveloping blanket, making travel feel a bit sticky and heavy but also refreshing, as long as you're prepared with light clothing and plenty of water.
In Grand Mound in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Grand Mound.
UV Risk Categories
Weather in Grand Mound varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Grand Mound, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 52 mm (2.1 inches) | 81% | moderate |
| February Weather | -4°C (25°F) | 59 mm (2.3 inches) | 81% | moderate |
| March Weather | 4°C (39°F) | 82 mm (3.2 inches) | 81% | high |
| April Weather | 9°C (49°F) | 96 mm (3.8 inches) | 82% | very high |
| May Weather | 17°C (62°F) | 140 mm (5.5 inches) | 78% | very high |
| June Weather | 23°C (73°F) | 121 mm (4.7 inches) | 81% | extreme |
| July Weather | 25°C (76°F) | 76 mm (3.0 inches) | 79% | very high |
| August Weather | 23°C (73°F) | 84 mm (3.3 inches) | 77% | very high |
| September Weather | 20°C (68°F) | 119 mm (4.7 inches) | 78% | very high |
| October Weather | 12°C (54°F) | 119 mm (4.7 inches) | 78% | high |
| November Weather | 3°C (39°F) | 49 mm (1.9 inches) | 87% | moderate |
| December Weather | 0°C (32°F) | 47 mm (1.9 inches) | 84% | low |