July weather forecast
Carbondale, IL

At the height of summer, Carbondale, Illinois, sees temperatures soaring between 68.7°F (20.4°C) and a sweltering 87.4°F (30.8°C) in July. It is notable that this month carries the peak temperature for the year. Even though the cloudy days are minimal, rainfall is quite common. The humidity factor remains unchanged, although wind speeds are at their lowest, leading to a lack of cool breezes. July's high UV index suggests a need for adequate sun protection when venturing outdoors.

Temperature

July, characterized by an average high temperature of 87.4°F (30.8°C) and a low temperature of 68.7°F (20.4°C), is generally the warmest month.

Heat index

In July, the average heat index is estimated at a torrid 102.2°F (39°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Carbondale, Illinois, the average relative humidity in July is 77%.

Rainfall

In Carbondale, in July, it is raining for 16.8 days, with typically 3.11" (79mm) of accumulated precipitation. In Carbondale, Illinois, during the entire year, the rain falls for 158.6 days and collects up to 34.69" (881mm) of precipitation.

Snowfall

In Carbondale, Illinois, snow does not fall in May through September.

Daylight

The average length of the day in July is 14h and 28min.
On the first day of July, sunrise is at 5:39 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:06 pm CDT.

Sunshine

In July, the average sunshine in Carbondale is 10.5h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 6 during July translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.