Last updated: June 24, 2025
In Saint Charles, United States, the average temperature in June hovers around 24°C (76°F). Expect a range from a cool 12°C (54°F) to a warm 36°C (96°F). This month sees an average precipitation of 106 mm (4.2 in) over approximately 13 days, accompanied by a humidity level of 79%.
In June in Saint Charles, the average temperature is 24°C (76°F). Maximum can reach 36°C (96°F) and minimum can be as low as 12°C (54°F). This makes Saint Charles an ideal destination for travelers seeking warm and pleasant weather during this time.
In Saint Charles in June, the precipitation amount is 106 mm (4.2 in) spread over a duration of 13 days.
In Saint Charles in June, humidity is 79%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket wrapped around you, making traveling somewhat uncomfortable and sticky, as you navigate through the warmth while constantly seeking shade and hydration.
In Saint Charles in June, 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 Saint Charles.
UV Risk Categories
Weather in Saint Charles varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Saint Charles, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 62 mm (2.4 inches) | 84% | moderate |
| February Weather | 6°C (42°F) | 93 mm (3.7 inches) | 83% | moderate |
| March Weather | 9°C (48°F) | 77 mm (3.0 inches) | 83% | high |
| April Weather | 14°C (58°F) | 99 mm (3.9 inches) | 81% | very high |
| May Weather | 19°C (67°F) | 118 mm (4.6 inches) | 78% | very high |
| June Weather | 24°C (76°F) | 106 mm (4.2 inches) | 79% | very high |
| July Weather | 27°C (81°F) | 122 mm (4.8 inches) | 74% | very high |
| August Weather | 26°C (79°F) | 151 mm (5.9 inches) | 72% | very high |
| September Weather | 23°C (73°F) | 91 mm (3.6 inches) | 75% | very high |
| October Weather | 17°C (64°F) | 108 mm (4.2 inches) | 81% | high |
| November Weather | 9°C (49°F) | 78 mm (3.1 inches) | 85% | moderate |
| December Weather | 6°C (43°F) | 86 mm (3.4 inches) | 84% | moderate |