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 30.8°C (87.4°F). 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 average temperatures reach their apex in July, averaging 30.8°C (87.4°F) at the high end and 20.9°C (69.6°F) at the low end.

Heat index

Throughout July, the heat index is evaluated at a torrid 37°C (98.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

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

Rainfall

In Hawthorne, in July, during 15.8 rainfall days, 76mm (2.99") of precipitation is typically accumulated. Throughout the year, there are 154.8 rainfall days, and 769mm (30.28") of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Hawthorne.

Daylight

In July, the average length of the day 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

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In July, the maximum UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.