Last updated: June 24, 2025
In May, the average temperature in Fairview Heights, United States is a pleasant 20°C (68°F), making it an ideal time to explore the region. Temperatures can fluctuate, with a minimum of 4°C (39°F) and a maximum of 35°C (95°F). Visitors should be prepared for the possibility of rain, as the area experiences an average precipitation of 158 mm (6.2 in) over 14 days. Humidity levels can be notable at 82%, contributing to the region's lush landscapes.
In May in Fairview Heights, the average temperature is 20°C (68°F). Maximums can reach 35°C (95°F) and minimums can be as low as 4°C (39°F). This weather makes Fairview Heights an ideal destination for travelers looking to enjoy mild days and cooler evenings.
In Fairview Heights in May, the total precipitation amount is 158 mm (6.2 in) over a span of 14 days.
In Fairview Heights 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 Fairview Heights in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Fairview Heights.
UV Risk Categories
Weather in Fairview Heights varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Fairview Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (33°F) | 80 mm (3.2 inches) | 82% | moderate |
| February Weather | 2°C (36°F) | 83 mm (3.3 inches) | 80% | moderate |
| March Weather | 9°C (48°F) | 139 mm (5.5 inches) | 80% | high |
| April Weather | 13°C (56°F) | 148 mm (5.8 inches) | 80% | very high |
| May Weather | 20°C (68°F) | 158 mm (6.2 inches) | 82% | very high |
| June Weather | 25°C (77°F) | 100 mm (4.0 inches) | 83% | extreme |
| July Weather | 27°C (80°F) | 91 mm (3.6 inches) | 81% | very high |
| August Weather | 25°C (77°F) | 129 mm (5.1 inches) | 80% | very high |
| September Weather | 23°C (73°F) | 59 mm (2.3 inches) | 76% | very high |
| October Weather | 15°C (60°F) | 107 mm (4.2 inches) | 76% | high |
| November Weather | 7°C (45°F) | 77 mm (3.0 inches) | 85% | moderate |
| December Weather | 4°C (40°F) | 67 mm (2.7 inches) | 86% | moderate |