Last updated: June 24, 2025
In May, the average temperature in Charles City, United States hovers around 16°C (60°F). During this month, you may experience a temperature range from a chilly -1°C (30°F) to a sweltering 34°C (93°F). Expect 14 days of occasional rain, accumulating to 159 mm (6.3 in), with average humidity at a comfortable 74%.
In May in Charles City, the average temperature is 16°C (60°F). Maximums can reach 34°C (93°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures when traveling during this month.
In Charles City in May, the total precipitation amount is 159 mm (6.3 in) spread over the course of 14 days.
In Charles City in May humidity is 74%. With an average temperature of 16°C (60°F), this humidity feels like a damp blanket enveloping you, making traveling a bit uncomfortable as you navigate the sticky air and potentially limiting your energy for exploring the sights.
In Charles City 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 Charles City.
UV Risk Categories
Weather in Charles City varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Charles City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 38 mm (1.5 inches) | 82% | moderate |
| February Weather | -7°C (19°F) | 48 mm (1.9 inches) | 84% | moderate |
| March Weather | 2°C (36°F) | 72 mm (2.8 inches) | 80% | moderate |
| April Weather | 8°C (46°F) | 74 mm (2.9 inches) | 81% | very high |
| May Weather | 16°C (60°F) | 159 mm (6.3 inches) | 74% | very high |
| June Weather | 22°C (72°F) | 123 mm (4.8 inches) | 80% | extreme |
| July Weather | 23°C (74°F) | 91 mm (3.6 inches) | 80% | very high |
| August Weather | 21°C (71°F) | 116 mm (4.6 inches) | 77% | very high |
| September Weather | 19°C (66°F) | 105 mm (4.1 inches) | 75% | very high |
| October Weather | 10°C (50°F) | 128 mm (5.0 inches) | 80% | moderate |
| November Weather | 2°C (35°F) | 49 mm (1.9 inches) | 87% | moderate |
| December Weather | -2°C (28°F) | 37 mm (1.4 inches) | 83% | moderate |