May weather forecast
Slidell, LA

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Weather in May

Towards the end of spring, May is a month characterized by warm and slightly humid weather. There's a significant jump in temperature from April to May, as the maximum average temperature reaches a sizzling 83.8°F (28.8°C). This rise in temperature signals the early arrival of summer. May also experiences a significant increase in rain as compared to April, with rainfall of 2.68" (68mm) across the entire month. The city of Slidell displays a lively weather scenario in May, embracing the warmth of the upcoming summer season.

Temperature

May's onset brings a minor rise in the average high-temperature, moving from 77.4°F (25.2°C) in April to a still warm 83.8°F (28.8°C). Slidell records an average low-temperature of 68.5°F (20.3°C) throughout the month of May.

Heat index

The heat index for May is calculated to be a tropical 91.4°F (33°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The average relative humidity in May is 73%.

Rainfall

In Slidell, Louisiana, in May, it is raining for 13.3 days, with typically 2.68" (68mm) of accumulated 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 Slidell, the average length of the day in May is 13h and 41min.
On the first day of May, sunrise is at 6:15 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:56 pm CDT.

Sunshine

In May, the average sunshine in Slidell 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 value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In May, the maximum UV index of 7 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

How hot is it in Slidell in May?

During May, Slidell experiences an average high-temperature of 83.8°F (28.8°C) and a low-temperature of 68.5°F (20.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in May is calculated to be 91.4°F (33°C).

What is the average humidity in May in Slidell?

The average relative humidity in May in Slidell is 73%.

How many days does it rain in May in Slidell?

In Slidell, in May, during 13.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Slidell?

February through December are months without snowfall in Slidell.

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

In Slidell, the average day length in May is 13h and 41min.

What time are sunrise and sunset in May in Slidell?

On the first day of May, sunrise is at 6:15 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:56 pm CDT.

How many hours of sunshine does Slidell have in May?

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

When is the highest UV index in Slidell?

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

How high is the UV index in May in Slidell?

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

Average temperature in May
Slidell, LA

Average temperature in May - Slidell, LA
  • Average high temperature in May: 83.8°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 May: 68.5°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 May
Slidell, LA

Average pressure in May - Slidell, LA
  • Average pressure in May: 30"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 May
Slidell, LA

Average wind speed in May - Slidell, LA
  • Average wind speed in May: 6.7mph

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 May
Slidell, LA

Average humidity in May - Slidell, LA
  • Average humidity in May: 73%

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 May
Slidell, LA

Average rainfall in May - Slidell, LA
  • Average rainfall in May: 2.68"

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 May
Slidell, LA

Average rainfall days in May - Slidell, LA
  • Average rainfall days in May: 13.3 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 May
Slidell, LA

Average snowfall in May - Slidell, LA
  • Average snowfall in May: 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 May
Slidell, LA

Average snowfall days in May - Slidell, LA
  • Average snowfall days in May: 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 May /
Average sunshine in May
Slidell, LA

Average daylight in May / Average sunshine in May - Slidell, LA
  • Average daylight in May: 13h and 4min

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 May: 10h and 4min

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 May
Slidell, LA

Average sunshine days in May - Slidell, LA
  • Average sunshine days in May: 14.8 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 May
Slidell, LA

Average UV index in May - Slidell, LA
  • Average UV index in May: 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 May
Slidell, LA

Average cloud cover in May - Slidell, LA
  • Average cloud cover in May: 27

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 May
Slidell, LA

Average visibility in May - Slidell, LA
  • Average visibility in May: 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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Slidell, Louisiana, USA

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