St. Charles Weather in July
With daytime temperatures of 31°C (88°F) and nighttime lows of 20°C (68°F), July in St. Charles brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 108 mm (4.3 in) falls on average.
Rainfall in St. Charles in July
Typically, you can expect about 10 days of rain this month, with 108 mm (4.3 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in St. Charles in July
July in St. Charles brings typical temperatures with highs around 31°C (88°F) and lows of 20°C (68°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights are mild at around 20°C (68°F), which is comfortable for most people. Average temperatures can be deceiving; some days will be hotter. Wear breathable fabrics and drink plenty of water to stay cool.
Sunshine in St. Charles in July
Expect sunny days throughout the month, with an estimated 311 hours of sunshine. This makes it a pleasant time to visit St. Charles.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September and October typically offer the best weather for St. Charles.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. Charles's climate page.
St. Charles Temperature in July
Min Temperature
20°C (68°F)
Max Temperature
31°C (88°F)
Chance of Rain
35%
Precipitation
108 mm (4.3 in)
Rainy days
10 days
Humidity
68% *
Sunshine
311 hours *
Percentage Sunshine
68% *
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
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What to Wear in St. Charles in July
Warm temperatures in July make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in St. Charles in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. Charles's climate page.
Temperature Rainfall Sunshine Humidity
See the full St. Charles climate overview or explore weather in the United States of America.
