Last updated: June 24, 2025
In Saint Charles, United States, the average temperature in June is a warm 25°C (77°F). Visitors can expect a comfortable range, with minimums dipping to 12°C (54°F) and maximums soaring to 36°C (98°F). However, be prepared for some moisture, as the region experiences an average precipitation of 93 mm (3.7 in) over approximately 11 days. Plus, with an average humidity of 83%, it’s wise to stay hydrated while enjoying the delightful climate!
In June in Saint Charles, the average temperature is 25°C (77°F), with maximums reaching up to 36°C (98°F) and minimums dipping as low as 12°C (54°F). This climate makes Saint Charles an ideal destination for travelers looking to enjoy warm days and cool evenings.
In Saint Charles in June, the precipitation amount is 93 mm (3.7 in) over the course of 11 days, indicating that rain is expected to be fairly frequent during that time.
In Saint Charles in June humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.
In Saint Charles in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 | 0°C (32°F) | 74 mm (2.9 inches) | 82% | moderate |
| February Weather | 2°C (35°F) | 79 mm (3.1 inches) | 80% | moderate |
| March Weather | 8°C (47°F) | 130 mm (5.1 inches) | 80% | high |
| April Weather | 13°C (55°F) | 124 mm (4.9 inches) | 80% | very high |
| May Weather | 19°C (67°F) | 143 mm (5.6 inches) | 82% | very high |
| June Weather | 25°C (77°F) | 93 mm (3.7 inches) | 83% | extreme |
| July Weather | 26°C (80°F) | 95 mm (3.7 inches) | 81% | very high |
| August Weather | 25°C (76°F) | 135 mm (5.3 inches) | 80% | very high |
| September Weather | 22°C (72°F) | 56 mm (2.2 inches) | 76% | very high |
| October Weather | 15°C (59°F) | 105 mm (4.1 inches) | 76% | high |
| November Weather | 7°C (44°F) | 71 mm (2.8 inches) | 85% | moderate |
| December Weather | 4°C (39°F) | 55 mm (2.2 inches) | 86% | moderate |