July weather forecast
Hawthorne, DC

July is often the warmest month in Hawthorne, and the city lives up to its summer reputation. Temperatures hit their yearly peak, reaching as high as 87.4°F (30.8°C). Residents and visitors find relief in cool indoor activities or dunking into community pools. Evergreen Hawthorne continues to thrive in full summer mode despite the high humidity. Not forgetting the occasional rain, which comes as a respite to the hot sunny days.

Temperature

The month of July, characterized by an average high of 87.4°F (30.8°C) and a low of 69.6°F (20.9°C), is recognized as the warmest.

Heat index

July's mean heat index is evaluated at a sweltering 98.6°F (37°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The least humid month is July, with an average relative humidity of 69%.

Rainfall

In Hawthorne, during July, the rain falls for 15.8 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Hawthorne, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in July in Hawthorne is 14h and 35min.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of July, sunrise is at 6:08 am and sunset at 8:20 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 reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 6 in July translates into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.