July weather forecast
Clifton, VA

July in Clifton, Virginia, brings the peak intensity of the summer season, demonstrating the highest mean temperature of 87.8°F (31°C). This mid-summer month is synonymous with scorching heat and high UV index levels demanding caution while venturing outdoors. Thunderstorms are not uncommon in July, with pouring rain often providing the much-needed respite from the soaring temperatures. As August nears, no significant changes in the weather pattern are anticipated, maintaining the high-summer conditions. The relentless July heat does not deter residents, who often cool off at community pools and ice-cream parlors.

Temperature

July brings the highest temperatures in Clifton, with an average high of 87.8°F (31°C) and an average low of 68.5°F (20.3°C).

Heat index

In July, the average heat index is evaluated at a sweltering 100.4°F (38°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. As body temperatures escalate without effective heat release, one might face dehydration threats.

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, 3.23" (82mm) of precipitation is accumulated. In Clifton, during the entire year, the rain falls for 166.5 days and collects up to 32.76" (832mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In July, the average length of the day is 14h and 34min.
On the first day of July, sunrise is at 5:48 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:21 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In July, the UV index of 6 transforms into the following advice:
Fend off overexposure. Sun protection is vital. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.