Last updated: June 24, 2025
In July, the average temperature in Saint Charles, United States is a warm 27°C (81°F), with a comfortable minimum of 18°C (64°F) and a sizzling maximum reaching up to 38°C (100°F). Expect 122 mm (4.8 in) of precipitation spread over 12 days, contributing to an average humidity of 74%. Enjoy the blend of warmth and occasional showers!
In July in Saint Charles, the average temperature is 27°C (81°F), with maximums reaching up to 38°C (100°F) and minimums dipping as low as 18°C (64°F). This climate makes Saint Charles an ideal destination for travelers seeking warm weather and outdoor activities during this time.
In Saint Charles in July, the precipitation amount is 122 mm (4.8 in) over a span of 12 days.
In Saint Charles in July humidity is 74%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket, making traveling feel both sticky and draining, yet the heat invites you to seek out refreshing dips in pools or shady spots to relax.
In Saint Charles in July, 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 July’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 |