July weather forecastCharlestown, MD
July
Weather in July
July, the same as June, is a moderately hot summer month in Charlestown, Maryland, with an average temperature fluctuating between 84.7°F (29.3°C) and 67.6°F (19.8°C).Temperature
July, noted for its average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 67.6°F (19.8°C), is considered the warmest month.Heat index
The heat index value during July is estimated at a torrid 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The average relative humidity in July is 77%.Rainfall
In Charlestown, Maryland, in July, during 16.4 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Charlestown, during the entire year, the rain falls for 150.3 days and collects up to 29.25" (743mm) of precipitation.Snowfall
April, June through October are months without snowfall.Ocean temperature
In Charlestown, in July, the average water temperature is 74.3°F (23.5°C).Note: The allure of a swim in 74.3°F (23.5°C) waters can be influenced by your feelings towards the cold, today's sunshine, the wind's touch, and the ambient warmth. To put it in perspective, Olympic standards demand water temperatures of 77°F (25°C) to 82.4°F (28°C).
Daylight
In July, the average length of the day is 14h and 38min.On the first day of July, sunrise is at 5:40 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:17 pm EDT.
Sunshine
July has the most sunshine of the year, with an average of 10.7h 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 health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In July, the UV index of 6 transforms into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Watch out! Sand and water enhance the UV exposure you receive.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Charlestown, MD
- Average high temperature in July: 84.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in July: 67.6°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in July
Charlestown, MD
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in July
Charlestown, MD
- Average wind speed in July: 5.4mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in July
Charlestown, MD
- Average humidity in July: 77%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in July
Charlestown, MD
- Average rainfall in July: 3.43"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in July
Charlestown, MD
- Average rainfall days in July: 16.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in July
Charlestown, MD
- Average snowfall in July: 0"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in July
Charlestown, MD
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).
Average sea temperature in July
Charlestown, MD
- Average sea temperature in July: 74.4°F
The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).
Average daylight in July /
Average sunshine in July
Charlestown, MD
- Average daylight in July: 14h and 36min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in July: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in July
Charlestown, MD
- Average sunshine days in July: 11.6 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in July
Charlestown, MD
- Average UV index in July: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Charlestown, MD
- Average cloud cover in July: 31
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in July
Charlestown, MD
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
