Last updated: June 24, 2025
In May, the average temperature in Round Lake Heights, United States hovers around 12°C (54°F). Expect a minimum of 0°C (32°F) and a maximum of 25°C (77°F), providing a varied climate. With 156 mm (6.1 in) of precipitation over 14 days, be prepared for some wet weather, while an average humidity of 78% ensures a distinctly moist atmosphere.
In May in Round Lake Heights, the average temperature is 12°C (54°F), with maximums reaching 25°C (77°F) and minimums dropping as low as 0°C (32°F). This mild weather makes Round Lake Heights an ideal destination for travelers seeking a comfortable climate.
In Round Lake Heights in May, the precipitation amount is 156 mm (6.1 in) over the course of 14 days.
In Round Lake Heights in May humidity is 78%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill settling in, making travel a bit uncomfortable as the air clings to your skin, leaving you feeling cooler than the thermometer suggests.
In Round Lake Heights 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 Round Lake Heights.
UV Risk Categories
Weather in Round Lake Heights varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Round Lake Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 67 mm (2.7 inches) | 85% | low |
| February Weather | -3°C (27°F) | 65 mm (2.6 inches) | 85% | moderate |
| March Weather | 2°C (36°F) | 70 mm (2.8 inches) | 85% | high |
| April Weather | 6°C (44°F) | 113 mm (4.5 inches) | 85% | very high |
| May Weather | 12°C (54°F) | 156 mm (6.1 inches) | 78% | very high |
| June Weather | 18°C (66°F) | 100 mm (3.9 inches) | 80% | very high |
| July Weather | 22°C (73°F) | 74 mm (2.9 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 72 mm (2.8 inches) | 76% | very high |
| September Weather | 19°C (67°F) | 84 mm (3.3 inches) | 79% | very high |
| October Weather | 12°C (54°F) | 130 mm (5.1 inches) | 83% | moderate |
| November Weather | 4°C (39°F) | 56 mm (2.2 inches) | 88% | moderate |
| December Weather | 0°C (33°F) | 58 mm (2.3 inches) | 81% | low |