July weather forecast
Yorktown, VA

The heart of summer beats in Yorktown during July. With daytime high temperatures reaching a peak of 87.8°F (31°C), it is the hottest month of the year in this city. The long sunny days, high ultraviolet index, and warm sea temperatures are ideal for beach enthusiasts, while the relatively low wind speeds warrant a calm summer. Despite the occasional rain showers, the number of sunshine hours offers ample opportunities for outdoor activities. The city certainly comes alive with summer mirth and merriment during July.

Temperature

Yorktown reaches its highest average temperatures in July, measuring 87.8°F (31°C) at the peak and 72.3°F (22.4°C) at the lowest.

Heat index

The heat index value during July is evaluated at a very hot 100.4°F (38°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 great significance to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

In July, in Yorktown, Virginia, the rain falls for 16.9 days. Throughout July, 3.31" (84mm) of precipitation is accumulated. Throughout the year, in Yorktown, there are 165.3 rainfall days, and 34.25" (870mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Yorktown.

Ocean temperature

In July, the average ocean temperature in Yorktown is 78.1°F (25.6°C).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 77°F (25°C) to 84.2°F (29°C), without any unpleasant sensations for prolonged durations.

Daylight

The average length of the day in July in Yorktown, Virginia, is 14h and 26min.
On the first day of the month, sunrise is at 5:49 am and sunset at 8:30 pm. On the last day of July, sunrise is at 6:10 am and sunset at 8:14 pm EDT.

Sunshine

The month with the most sunshine in Yorktown is July, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index in Yorktown, Virginia, are June and July, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! Reflecting off water and sand, UV rays are much stronger.