May weather forecast
Slidell, LA

Weather in May

The last month of the spring, May, is another warm month in Slidell, Louisiana, with an average temperature ranging between min 68.5°F (20.3°C) and max 83.8°F (28.8°C).

Temperature

In Slidell, Louisiana, the average high-temperature in May slightly increases from a warm 77.4°F (25.2°C) in April to a still moderately hot 83.8°F (28.8°C). The average low-temperature, in Slidell, is 68.5°F (20.3°C).

Heat index

In May, the average heat index is appraised at a hot 91.4°F (33°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy 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', 'feels like', 'felt air temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, clothing, metabolic differences, and activity influence one's weather impression. 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 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.

Humidity

The average relative humidity in May is 73%.

Rainfall

In May, in Slidell, the rain falls for 13.3 days. Throughout May, 2.68" (68mm) of precipitation is accumulated. 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, Louisiana.

Daylight

The average length of the day in May in Slidell is 13h and 41min.
On the first day of the month, sunrise is at 6:15 am and sunset at 7:36 pm. On the last day of May, sunrise is at 5:57 am and sunset at 7:55 pm CDT.

Sunshine

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

UV index

The months with the highest UV index in Slidell are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against 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. 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 temperature in May in Slidell?

In Slidell, in May, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 68.5°F (20.3°C). in May, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 91.4°F (33°C).

What is the average humidity in May in Slidell?

The average relative humidity in May is 73%.

How many days does it rain in May in Slidell?

In Slidell, in May, it is raining for 13.3 days, with typically 2.68" (68mm) of accumulated precipitation.

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

What time are sunrise and sunset in May in Slidell?

On the first day of May in Slidell, Louisiana, sunrise is at 6:15 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 7:55 pm CDT.

How long on average sun shines in May in Slidell?

The average sunshine duration in May in Slidell, Louisiana, 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, Louisiana.

How high is the UV index in May in Slidell?

In Slidell, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk 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 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 41min

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 May: 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 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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