July weather forecast and climate
Slidell, LA

Weather in July

July, like June, is another tropical summer month in Slidell, Louisiana, with average temperature ranging between max 90.9°F (32.7°C) and min 77°F (25°C).

Temperature

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.

Heat index

In July, the average heat index is estimated at a blistering 111.6°F (44.2°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. With the 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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like metabolic differences, clothing, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Slidell, the average relative humidity is 74%.

Rainfall

In Slidell, it is raining for 22.8 days, with typically 4.41" (112mm) of accumulated precipitation. In Slidell, during the entire year, the rain falls for 173.3 days and collects up to 30.79" (782mm) of precipitation.

Snowfall

February through December are months without snowfall in Slidell.

Daylight

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

Sunshine

In Slidell, the average sunshine is 10.6h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Slidell. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 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). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is estimated at 111.6°F (44.2°C).

What is the average humidity in July in Slidell?

The average relative humidity in July in Slidell, Louisiana, is 74%.

How much does it rain in Slidell in July?

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

When it does not snow in Slidell?

In Slidell snow does not fall in February through December.

How many hours of daylight does Slidell have in July?

In Slidell, Louisiana, the average length of the day in July is 13.9h.

How long on average sun shines in July in Slidell?

The average sunshine in July in Slidell is 10.6h.

When is the highest UV index in Slidell?

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

What is the UV index reading in July in Slidell?

In July, the average daily maximum UV index in Slidell is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 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: 10.6h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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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

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

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

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