Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July stands out as Saint Charles's warmest month, with temperatures ranging between an average high of 81°F (27.2°C) and a low of 64.2°F (17.9°C).Heat index
For most parts of July, the heat index is evaluated at a tropical 86°F (30°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
The average relative humidity in July in Saint Charles is 81%.Rainfall
In July, in Saint Charles, the rain falls for 12.3 days. Throughout July, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Saint Charles, Illinois, there are 101.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Saint Charles.Daylight
In July, the average length of the day is 14h and 52min.On the first day of the month, sunrise is at 5:22 am and sunset at 8:32 pm. On the last day of July, sunrise is at 5:46 am and sunset at 8:12 pm CDT.
Sunshine
The month with the most sunshine in Saint Charles is July, with an average of 9.9h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 during July translates into the following guidance:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest in Saint Charles?
What is the temperature in July in Saint Charles?
What is the average humidity in July in Saint Charles?
How much does it rain in Saint Charles in July?
When it does not snow in Saint Charles?
How many hours of daylight does Saint Charles have in July?
When are sunrise and sunset in July in Saint Charles?
What month has the most sunshine in Saint Charles?
How many hours of sunshine does Saint Charles have in July?
What are the months with the highest UV index in Saint Charles?
What is the UV index intensity in July in Saint Charles?
Average temperature in July
Saint Charles, IL
- Average high temperature in July: 81°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in July: 64.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in July
Saint Charles, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Saint Charles, IL
- Average wind speed in July: 6.4mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in July
Saint Charles, IL
- Average humidity in July: 81%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in July
Saint Charles, IL
- Average rainfall in July: 0.98"
The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are November and December (0.39").
Average rainfall days in July
Saint Charles, IL
- Average rainfall days in July: 12.3 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in July
Saint Charles, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Saint Charles, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Saint Charles, IL
- Average daylight in July: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 9h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in July
Saint Charles, IL
- Average sunshine days in July: 14.3 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (13.3 days).
Average UV index in July
Saint Charles, IL
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Saint Charles, IL
- Average cloud cover in July: 33
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in July
Saint Charles, IL
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Saint Charles, Illinois, USA
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