July weather forecast
Dismal Key, FL

July, the same as June, in Dismal Key, Florida, is another hot summer month, with an average temperature fluctuating between 79.7°F (26.5°C) and 87.4°F (30.8°C).

Temperature

July commences with an average high-temperature of a still tropical 87.4°F (30.8°C), showing little deviation from June's 86.5°F (30.3°C). A modest decline from daytime high temperatures is noticed in July, marking the average low at a moderately hot 79.7°F (26.5°C).

Heat index

In July, the average heat index is computed to be a sweltering 100.4°F (38°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
One should consider that heat index numbers are for shaded settings and light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In July, the average relative humidity is 73%.

Rainfall

In July, the rain falls for 20 days. Throughout July, 3.62" (92mm) of precipitation is accumulated. Throughout the year, there are 162.1 rainfall days, and 21.69" (551mm) of precipitation is accumulated.

Daylight

In Dismal Key, Florida, the average length of the day in July is 13h and 34min.
On the first day of July, sunrise is at 6:38 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:12 pm EDT.

Sunshine

The months with the most sunshine are May and July, with an average of 11.1h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In July, the maximum UV index of 7 translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.