July weather forecastGretna, LA
July
Weather in July
Steady summer temperatures continue in Gretna into July. Alongside, the city receives the highest amount of rainfall, at 1.57" (40mm), making it the wettest month of the year. Despite increased rain showers,daily routines remain unhindered, thanks to a generous visibility of 6 miles throughout the year. This month also records the highest low temperature, bringing somewhat warm nights. Meanwhile, a drop in wind speeds alongside high-pressure conditions, results in calm, tranquil evenings.Temperature
Gretna's warmest period falls in July and August, when the average high-temperatures ascend to 89.4°F (31.9°C).Heat index
Throughout July, the heat index is computed to be a scorching 105.8°F (41°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In July, the average relative humidity is 73%.Rainfall
The month with the most rainfall is July, when the rain falls for 15.5 days and typically aggregates up to 1.57" (40mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In July, the average length of the day is 13h and 51min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:05 pm. On the last day of July, sunrise is at 6:19 am and sunset at 7:53 pm CDT.
Sunshine
In July, the average sunshine is 10.6h.UV index
May through September, with an average maximum UV index of 7, 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 ordinary individuals.Note: A daily maximum UV index of 7 in July translates into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 48min
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 36min
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).
