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 experiences its warmest period in July and August, averaging a high-temperature of 90.7°F (32.6°C).Heat index
Throughout July, the heat index is computed to be a burning hot 113°F (45°C). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In Gretna, the average relative humidity in July is 77%.Rainfall
In Gretna, in July, during 26.1 rainfall days, 5.04" (128mm) of precipitation is typically accumulated. Throughout the year, there are 184.9 rainfall days, and 37.6" (955mm) of precipitation is accumulated.Snowfall
In Gretna, snow does not fall in February through December.Daylight
In July, the average length of the day in Gretna is 13h and 54min.On the first day of July in Gretna, sunrise is at 6:39 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 8:33 pm EDT.
Sunshine
June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Gretna.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index in Gretna. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 7 in July interprets into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest in Gretna?
How hot does it get in Gretna in July?
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?
How many hours of daylight does Gretna have in July?
What time are sunrise and sunset in July in Gretna?
What is the month with the most sunshine in Gretna?
How long on average sun shines in July in Gretna?
What is the month with the highest UV index in Gretna?
How high is the UV index in July in Gretna?
Average temperature in July
Gretna, FL
- Average high temperature in July: 90.7°F
The warmest months (with the highest average high temperature) are July and August (90.7°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in July: 73°F
The month with the highest average low temperature is August (73.6°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).
Average pressure in July
Gretna, FL
- 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 (29.98"Hg).
Average wind speed in July
Gretna, FL
- Average wind speed in July: 4.6mph
The windiest months (with the highest average wind speed) are January and March (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in July
Gretna, FL
- Average humidity in July: 77%
The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is May (72%).
Average rainfall in July
Gretna, FL
- Average rainfall in July: 5.04"
The wettest month (with the highest rainfall) is August (5.08").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in July
Gretna, FL
- Average rainfall days in July: 26.1 days
The month with the highest number of rainy days is July (26.1 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in July
Gretna, FL
- Average snowfall in July: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in July
Gretna, FL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in July /
Average sunshine in July
Gretna, FL
- Average daylight in July: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- 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 December (Average sunshine: 5h and 30min).
Average sunshine days in July
Gretna, FL
- Average sunshine days in July: 3.4 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (3.4 days).
Average UV index in July
Gretna, FL
- Average UV index in July: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in July
Gretna, FL
- Average cloud cover in July: 33
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are May and October (Cloud cover 29).
Average visibility in July
Gretna, FL
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, October and November (6mi).
The months with the lowest visibility are July, August, September and December (5mi).
Gretna, Florida, USA
Weather forecast for your location
2. Allow the app to use your location