July weather forecast
Ellicott City, MD

The weather in July takes Ellicott City into the peak of summer, delivering its warmest temperatures on average, with a sizzling high that can reach up to 85.6°F (29.8°C). Distant rumbles of thunder become a common evening occurrence as the city receives its highest rainfall of the year at 3.19" (81mm). Despite high temperatures, the wind speed decreases, lending to a calm, sunny atmosphere. Moreover, the arrival of longer sunshine hours makes outdoor water-related activities particularly appealing. As July departs, the weather continues its hot trend in August, minus a few degrees.

Temperature

With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 68.7°F (20.4°C), July is the warmest month.

Heat index

The heat index value during July is calculated to be a torrid 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

July is the least humid month, with an average relative humidity of 71%.

Rainfall

In July, in Ellicott City, the rain falls for 17.7 days. Throughout July, 3.19" (81mm) of precipitation is accumulated. In Ellicott City, during the entire year, the rain falls for 165.5 days and collects up to 31.65" (804mm) of precipitation.

Snowfall

In Ellicott City, snow does not fall in May through October.

Daylight

In Ellicott City, the average length of the day in July is 14h and 37min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:37 pm. On the last day of July, in Ellicott City, sunrise is at 6:07 am and sunset at 8:20 pm EDT.

Sunshine

July has the most sunshine of the year in Ellicott City, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the maximum UV index of 6 suggests this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.