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

July, characterized by an average high temperature of 85.6°F (29.8°C) and a low temperature of 68.7°F (20.4°C), is generally the warmest month.

Heat index

The heat index for July is estimated at a torrid 95°F (35°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

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

Rainfall

In July, the rain falls for 17.7 days. Throughout July, 3.19" (81mm) of precipitation is accumulated. Throughout the year, there are 165.5 rainfall days, and 31.65" (804mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In July, the average length of the day 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, sunrise is at 6:07 am and sunset at 8:20 pm EDT.

Sunshine

July has the most sunshine of the year, 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 value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In July, the maximum UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.