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 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 months, July and August, record an average high-temperature of 89.4°F (31.9°C).Heat index
The average heat index in July is estimated at a scorching 105.8°F (41°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance 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.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
The average relative humidity in July in Gretna is 73%.Rainfall
July is the month with the most rainfall in Gretna. Rain falls for 15.5 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Gretna, snow does not fall in February through December.Daylight
The average length of the day in July in Gretna is 13h and 51min.On the first day of July, sunrise is at 6:03 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:53 pm CDT.
Sunshine
In Gretna, the average sunshine in July is 10.6h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Gretna. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 7 in July suggests the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the hottest time of year in Gretna?
How hot is it in Gretna in July?
What is the average humidity in July in Gretna?
What is the rainiest month in Gretna?
How much does it rain in Gretna in July?
When it does not snow in Gretna?
How many hours of daylight does Gretna have in July?
What time are sunrise and sunset in July in Gretna?
How long on average sun shines in July in Gretna?
What are the months with the highest UV index in Gretna?
How high is the UV index in July in Gretna?
Average temperature in July
Gretna, LA
- Average high temperature in July: 89.4°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in July: 79.3°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in July
Gretna, LA
- Average pressure in July: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in July
Gretna, LA
- Average wind speed in July: 6.6mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in July
Gretna, LA
- Average humidity in July: 73%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in July
Gretna, LA
- Average rainfall in July: 1.57"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in July
Gretna, LA
- Average rainfall days in July: 15.5 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in July
Gretna, LA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in July /
Average sunshine in July
Gretna, LA
- Average daylight in July: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in July: 10h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in July
Gretna, LA
- Average sunshine days in July: 10.1 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in July
Gretna, LA
- Average UV index in July: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in July
Gretna, LA
- Average cloud cover in July: 28
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in July
Gretna, LA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Gretna, Louisiana, USA
Weather forecast for your location
2. Allow the app to use your location
