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
Gretna's warmest month, July, registers temperatures that range from a high of 88.7°F (31.5°C) to a low of 65.8°F (18.8°C).Heat index
For most parts of July, the heat index is appraised at a very hot 102.2°F (39°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The least humid month is July, with an average relative humidity of 69%.Rainfall
In Gretna, in July, it is raining for 16.7 days, with typically 2.13" (54mm) of accumulated precipitation. In Gretna, during the entire year, the rain falls for 158.8 days and collects up to 30.91" (785mm) of precipitation.Snowfall
May through October are months without snowfall in Gretna, Virginia.Daylight
In July, the average length of the day is 14h and 24min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:40 pm. On the last day of July, in Gretna, sunrise is at 6:22 am and sunset at 8:25 pm EDT.
Sunshine
June and July, with an average of 10.5h of sunshine, are months with the most 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 average person.Note: A daily high UV index of 6 in July leads to these guidelines:
Resist extreme sun exposure. Guarding against solar damage is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the warmest month in Gretna?
How hot is July in Gretna?
What is the least humid month in Gretna?
What is the average humidity in July in Gretna?
How many days does it rain in July in Gretna?
When it does not snow in Gretna?
What is the average length of the day in July in Gretna?
What time are sunrise and sunset in July in Gretna?
What are the months with the most sunshine in Gretna?
How long on average sun shines in July in Gretna?
When is the highest UV index in Gretna?
What is the UV index reading in July in Gretna?
Average temperature in July
Gretna, VA
- Average high temperature in July: 88.7°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in July: 65.8°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in July
Gretna, VA
- Average pressure in July: 30"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in July
Gretna, VA
- Average wind speed in July: 4.5mph
The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in July
Gretna, VA
- Average humidity in July: 69%
The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in July
Gretna, VA
- Average rainfall in July: 2.13"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in July
Gretna, VA
- Average rainfall days in July: 16.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in July
Gretna, VA
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Gretna, VA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Gretna, VA
- Average daylight in July: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in July: 10h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in July
Gretna, VA
- Average sunshine days in July: 11.3 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in July
Gretna, 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 and December (UV index 2).
Average cloud cover in July
Gretna, VA
- Average cloud cover in July: 31
The months with the most cloud cover are February and March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in July
Gretna, VA
- 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).
Gretna, Virginia, USA
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