July weather forecast
Slidell, LA

Weather in July

July, like June, is another hot summer month in Slidell, Louisiana, with an average temperature varying between 77°F (25°C) and 90.9°F (32.7°C).

Temperature

July is the warmest month, with an average high-temperature of 90.9°F (32.7°C) and an average low-temperature of 77°F (25°C).

Heat index

In July, the average heat index is appraised at an extremely hot 111.2°F (44°C). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, clothing). Be aware that direct exposure to sunlight increases heat impact and may raise the 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In July, the average relative humidity in Slidell is 74%.

Rainfall

In Slidell, during July, the rain falls for 22.8 days and regularly aggregates up to 4.41" (112mm) of precipitation. Throughout the year, there are 173.3 rainfall days, and 30.79" (782mm) of precipitation is accumulated.

Snowfall

In Slidell, snow does not fall in February through December.

Daylight

In July, the average length of the day in Slidell is 13h and 53min.
On the first day of July, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:53 pm CDT.

Sunshine

The average sunshine in July is 10.6h.

UV index

May through August, 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 hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 7 in July transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Slidell?

With an average high-temperature of 90.9°F (32.7°C) and an average low-temperature of 77°F (25°C), July is the warmest month in Slidell.

What is the temperature in July in Slidell?

In Slidell, Louisiana, in July, the average high-temperature is 90.9°F (32.7°C), and the average low-temperature is 77°F (25°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in July is appraised at 111.2°F (44°C).

What is the average humidity in July in Slidell?

In July, the average relative humidity in Slidell is 74%.

How many days does it rain in July in Slidell?

In July, in Slidell, the rain falls for 22.8 days. Throughout July, 4.41" (112mm) of precipitation is accumulated.

When it does not snow in Slidell?

February through December are months without snowfall in Slidell, Louisiana.

What is the average length of the day in July in Slidell?

In Slidell, the average day length in July is 13h and 53min.

When are sunrise and sunset in July in Slidell?

In July, on the first day of the month, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, in Slidell, sunrise is at 6:17 am and sunset at 7:53 pm CDT.

How long on average sun shines in July in Slidell?

In Slidell, Louisiana, the average sunshine duration in July is 10.6h.

When is the highest UV index in Slidell?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Slidell.

What is the UV index reading in July in Slidell?

In Slidell, Louisiana, the average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Slidell, LA

Average temperature in July - Slidell, LA
  • Average high temperature in July: 90.9°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in July: 77°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

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Average pressure in July
Slidell, LA

Average pressure in July - Slidell, LA
  • Average pressure in July: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

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Average wind speed in July
Slidell, LA

Average wind speed in July - Slidell, LA
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in July
Slidell, LA

Average humidity in July - Slidell, LA
  • Average humidity in July: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in July
Slidell, LA

Average rainfall in July - Slidell, LA
  • Average rainfall in July: 4.41"

The wettest month (with the highest rainfall) is August (4.92").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in July
Slidell, LA

Average rainfall days in July - Slidell, LA
  • Average rainfall days in July: 22.8 days

The month with the highest number of rainy days is August (23.5 days).
The month with the least rainy days is November (8 days).

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Average snowfall in July
Slidell, LA

Average snowfall in July - Slidell, LA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.2").
The 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
Slidell, LA

Average snowfall days in July - Slidell, LA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).

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Average daylight in July /
Average sunshine in July
Slidell, LA

Average daylight in July / Average sunshine in July - Slidell, LA
  • Average daylight in July: 13h and 53min

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

  • Average sunshine in July: 10h and 36min

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in July
Slidell, LA

Average sunshine days in July - Slidell, LA
  • Average sunshine days in July: 5.2 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (5.1 days).

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Average UV index in July
Slidell, LA

Average UV index in July - Slidell, LA
  • 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 December (UV index 3).

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Average cloud cover in July
Slidell, LA

Average cloud cover in July - Slidell, LA
  • Average cloud cover in July: 29

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 24).

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Average visibility in July
Slidell, LA

Average visibility in July - Slidell, 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).

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