July weather forecast
Roanoke, VA

Roanoke witnesses the peak of summer during July with temperatures reaching a high of 86.5°F (30.3°C) amidst extended durations of sunshine. Endless daylight hours coupled with long sunny days make this month ideal for outdoor activities and summer festivities. Constant balmy conditions persist, welcoming a wave of warmth across the city. Rainfall levels decrease compared to June, while the pleasant winds of spring and early summer settle down to a calm breeze. The dog days of summer in Roanoke certainly make their presence felt during this month.

Temperature

Temperature records mark July as the warmest month, with highs averaging 86.5°F (30.3°C) and lows at 62.6°F (17°C).

Heat index

The heat index value for July is computed to be a fiery hot 96.8°F (36°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The least humid month in Roanoke is July, with an average relative humidity of 72%.

Rainfall

In Roanoke, in July, during 15.3 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Roanoke, during the entire year, the rain falls for 145.5 days and collects up to 25.04" (636mm) of precipitation.

Snowfall

In Roanoke, snow does not fall in May through September.

Daylight

In Roanoke, the average length of the day in July is 14h and 26min.
On the first day of July, sunrise is at 6:03 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:28 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Roanoke. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.