July weather forecast and climate
Gretna, FL

Weather in July

July, like June, is another hot summer month in Gretna, Florida, with average temperature varying between 73°F (22.8°C) and 90.7°F (32.6°C).

Temperature

July and August, with an average high-temperature of 90.7°F (32.6°C), are the warmest months.

Heat index

In July, the average heat index is calculated to a blazing hot 113.4°F (45.2°C). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, clothing, wind, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Gretna, the average relative humidity is 77%.

Rainfall

In Gretna, during 26.1 rainfall days, 5.04" (128mm) of precipitation is typically accumulated. Throughout the year, in Gretna, Florida, there are 184.9 rainfall days, and 37.6" (955mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Gretna, Florida.

Daylight

The average length of the day in Gretna is 13.9h.

Sunshine

Months with the most sunshine are June and July, with an average of 10.5h of sunshine.

UV index

Months with the highest UV index in Gretna are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What are the warmest months in Gretna?

July and August, with an average high-temperature of 90.7°F (32.6°C), are warmest months in Gretna, Florida.

What is the temperature in July in Gretna?

The average high-temperature, in July, is 90.7°F (32.6°C), while the average low-temperature is 73°F (22.8°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines air temperature and relative humidity, is calculated to 113.4°F (45.2°C).

What is the average humidity in July in Gretna?

The average relative humidity in July in Gretna, Florida, is 77%.

How many days does it rain in July in Gretna?

In Gretna, during July, the rain falls for 26.1 days and regularly aggregates up to 5.04" (128mm) of precipitation.

When it does not snow in Gretna?

February through December are months without snowfall in Gretna.

How many hours of daylight does Gretna have in July?

In July, the average length of the day in Gretna, Florida, is 13.9h.

What are the months with the most sunshine in Gretna?

Months with the most sunshine are June and July, with an average of 10.5h of sunshine.

How long on average sun shines in July in Gretna?

In Gretna, the average sunshine in July is 10.5h.

What are the months with the highest UV index in Gretna?

Months with the highest UV index in Gretna, Florida, are May through August, with an average maximum UV index of 7.

What is the UV index reading in July in Gretna?

The average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in July
Gretna, FL

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).

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Average pressure in July
Gretna, FL

Average pressure in July - Gretna, FL
  • Average pressure in July: 30.01"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June, August and September (29.98").

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Average wind speed in July
Gretna, FL

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).

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Average humidity in July
Gretna, FL

Average humidity in July - Gretna, FL
  • Average humidity in July: 77%

Months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is May (72%).

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Average rainfall in July
Gretna, FL

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").

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Average rainfall days in July
Gretna, FL

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).

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Average snowfall in July
Gretna, FL

Average snowfall in July - Gretna, FL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.04").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in July
Gretna, FL

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).
Months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in July /
Average sunshine in July
Gretna, FL

Average daylight in July / Average sunshine in July - Gretna, FL
  • Average daylight in July: 13.9h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in July: 10.5h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in July
Gretna, FL

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).

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Average UV index in July
Gretna, FL

Average UV index in July - Gretna, FL
  • Average UV index in July: 7

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).

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Average cloud cover in July
Gretna, FL

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).
Months with the least cloud cover are May and October (Cloud cover 29).

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Average visibility in July
Gretna, FL

Average visibility in July - Gretna, FL
  • Average visibility in July: 5mi

Months with the highest visibility are January, February, March, April, May, June, October and November (6mi).
Months with the lowest visibility are July, August, September and December (5mi).

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