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

July, noted for its average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 70.2°F (21.2°C), is considered the warmest month.

Heat index

July's heat index is calculated to be a scorching 107.6°F (42°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The least humid month is July, with an average relative humidity of 71%.

Rainfall

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

Snowfall

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

Daylight

The average length of the day in July 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.

UV index

May 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 threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.