July weather forecast
Rockville, MD

July in Rockville offers the warmest climate of the year, with temperatures soaring to an apex of 87.1°F (30.6°C) and falling to a relatively warmer 68.5°F (20.3°C). While rainfall is common, it doesn’t take away from sunshine hours, which hover around the maximum amounts experienced in June. The city is usually at its most vibrant during this time, reverberating with an abundance of summer activities. Hot days, extended daylight hours, and relatively reduced wind speeds characterize the preeminent summer month of Rockville.

Temperature

Rockville registers the highest average temperatures during the month of July, with peaks of 87.1°F (30.6°C) and lows of 68.5°F (20.3°C).

Heat index

For July, the heat index is calculated to be a fiery hot 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for 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.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

With an average relative humidity of 70%, July is the least humid month in Rockville.

Rainfall

In Rockville, in July, it is raining for 16.6 days, with typically 2.99" (76mm) of accumulated precipitation. In Rockville, during the entire year, the rain falls for 156.4 days and collects up to 30.79" (782mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in July in Rockville is 14h and 35min.
On the first day of July, sunrise is at 5:46 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.