July weather forecast
Chattanooga, TN

Marked by the highest temperatures of the year, with averages between 67.1°F (19.5°C) and 88°F (31.1°C), July represents the peak of summer in Chattanooga. The warm weather is accompanied by an increase in humidity, enveloping the city in a classic summer atmosphere. The long hours of daylight continue from June, painting the mood for the month. Towards the latter part of the month and proceeding into August, the weather begins to stabilize and transitions to similar weather conditions.

Temperature

In Chattanooga, the month of July registers the highest temperatures, averaging 88°F (31.1°C) at the peak and 67.1°F (19.5°C) at the lowest.

Heat index

July's heat index is computed to be a torrid 102.2°F (39°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Heat index determinations are made taking into account the shade and light air movements. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

June through August, October and November, with an average relative humidity of 75%, are the least humid months in Chattanooga.

Rainfall

In Chattanooga, in July, during 19.6 rainfall days, 3.94" (100mm) of precipitation is typically accumulated. Throughout the year, in Chattanooga, there are 174.4 rainfall days, and 41.14" (1045mm) of precipitation is accumulated.

Snowfall

In Chattanooga, snow does not fall in May through October.

Daylight

The average length of the day in July in Chattanooga is 14h and 14min.
On the first day of July in Chattanooga, Tennessee, sunrise is at 6:31 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:44 pm EDT.

Sunshine

In July, the average sunshine is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Chattanooga. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in July interprets into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.