Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July tends to be the warmest month, with temperatures averaging a daily high of 86°F (30°C) and a low of 63.7°F (17.6°C).Heat index
In July, the average heat index is evaluated at a torrid 96.8°F (36°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. 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 relevant to children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
April, June and July, with an average relative humidity of 74%, are the least humid months in Markham.Rainfall
In Markham, Virginia, in July, during 18.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Markham, during the entire year, the rain falls for 166.6 days and collects up to 29.57" (751mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In July, the average length of the day is 14h and 35min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:41 pm. On the last day of July, in Markham, sunrise is at 6:12 am and sunset at 8:23 pm EDT.
Sunshine
The month with the most sunshine in Markham is July, with an average of 10.6h of sunshine.UV index
The months with the highest UV index in Markham, Virginia, are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What are the warmest months in Markham?
How hot is July in Markham?
What is the least humid month in Markham?
What is the average humidity in July in Markham?
How many days does it rain in July in Markham?
When it does not snow in Markham?
How many hours of daylight does Markham have in July?
When is the sunrise / sunset in July in Markham?
What month has the most sunshine in Markham?
How many hours of sunshine does Markham have in July?
When is the highest UV index in Markham?
How high is the UV index in July in Markham?
Average temperature in July
Markham, VA
- Average high temperature in July: 86°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in July: 63.7°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in July
Markham, VA
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in July
Markham, VA
- Average wind speed in July: 4.3mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in July
Markham, VA
- Average humidity in July: 74%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in July
Markham, VA
- Average rainfall in July: 2.91"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in July
Markham, VA
- Average rainfall days in July: 18.3 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in July
Markham, VA
- Average snowfall in July: 0"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Markham, VA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Markham, VA
- Average daylight in July: 14h and 4min
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 30min).
- Average sunshine in July: 10h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in July
Markham, VA
- Average sunshine days in July: 10.8 days
The month with the most sunshine days is November (19.1 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in July
Markham, VA
- 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
Markham, VA
- Average cloud cover in July: 31
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in July
Markham, VA
- Average visibility in July: 6mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
Markham, Virginia, USA
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