July weather forecast
Durham, NC

July, commonly perceived as the peak of summer, boasts the highest temperatures of the year, marked by a high of 90.3°F (32.4°C) and a low of 70.2°F (21.2°C). This is complemented by longer sunshine hours, reaching its maximum at 10.6 hours on average per day, and a slightly reduced cloud% from the preceding month. Despite the heat, the average relative humidity remains relatively stable, providing a balanced climate for outdoor exploits. The increase in heat and decrease in precipitation, as compared to June, marks the zenith of the summertime experience.

Temperature

Durham's July weather, marked by an average high temperature of 90.3°F (32.4°C) and an average low temperature of 70.2°F (21.2°C), is the warmest in the year.

Heat index

The average heat index in July is evaluated at an extremely hot 107.6°F (42°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index evaluations are typically in the context of light winds and shaded environments. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

With an average relative humidity of 71%, July is the least humid month in Durham.

Rainfall

In Durham, in July, during 17 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Durham, North Carolina, during the entire year, the rain falls for 150.7 days and collects up to 29.41" (747mm) of precipitation.

Snowfall

In Durham, North Carolina, snow does not fall in April through November.

Daylight

In July, the average length of the day is 14h and 19min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:36 pm. On the last day of July, sunrise is at 6:22 am and sunset at 8:21 pm EDT.

Sunshine

With an average of 10.6h of sunshine, July has the most sunshine of the year in Durham.

UV index

The months with the highest UV index in Durham, North Carolina, are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In July, the maximum UV index of 6 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.