May weather forecast
McNary, LA

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Weather in May

The last month of the spring, May, is another warm month in McNary, Louisiana, with an average temperature ranging between max 84.2°F (29°C) and min 65.1°F (18.4°C).

Temperature

McNary's weather in May shows a minor rise in the average high-temperature, moving slightly up from April's 76.6°F (24.8°C) to a still moderately hot 84.2°F (29°C). The average low-temperature of 65.1°F (18.4°C) is witnessed in McNary during May.

Heat index

May's mean heat index is evaluated at a tropical 93.2°F (34°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

The average relative humidity in May is 78%.

Rainfall

In May, the rain falls for 13.8 days. Throughout May, 2.72" (69mm) of precipitation is accumulated. In McNary, during the entire year, the rain falls for 159.5 days and collects up to 34.25" (870mm) of precipitation.

Snowfall

In McNary, snow does not fall in March through November.

Daylight

In McNary, the average length of the day in May is 13h and 44min.
On the first day of May, sunrise is at 6:25 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:08 pm CDT.

Sunshine

In May, the average sunshine is 9.4h.

UV index

In McNary, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the UV index of 6 transforms into the following advice:
Ward off overexposure. Defence against solar harm is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in May?

The average high-temperature and low-temperature during May are 84.2°F (29°C) and 65.1°F (18.4°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in May is evaluated at 93.2°F (34°C).

What is the average humidity in May?

In May, the average relative humidity is 78%.

How many days does it rain in May?

In McNary, during May, the rain falls for 13.8 days and regularly aggregates up to 2.72" (69mm) of precipitation.

When it does not snow?

In McNary, snow does not fall in March through November.

How many hours of daylight does McNary have in May?

In May, the average day length is 13h and 44min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:25 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:08 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 9.4h.

How high is the UV index in May?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat 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
McNary, LA

Average temperature in May - McNary, LA
  • Average high temperature in May: 84.2°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in May: 65.1°F

The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (41°F).

Average pressure in May
McNary, LA

Average pressure in May - McNary, LA
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
McNary, LA

Average wind speed in May - McNary, LA
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in May
McNary, LA

Average humidity in May - McNary, LA
  • Average humidity in May: 78%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May
McNary, LA

Average rainfall in May - McNary, LA
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in May
McNary, LA

Average rainfall days in May - McNary, LA
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is August (16.8 days).
The month with the least rainy days is October (9.7 days).

Average snowfall in May
McNary, LA

Average snowfall in May - McNary, LA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.59").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in May
McNary, LA

Average snowfall days in May - McNary, LA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in May /
Average sunshine in May
McNary, LA

Average daylight in May / Average sunshine in May - McNary, 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: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in May
McNary, LA

Average sunshine days in May - McNary, LA
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is October (20 days).
The month with the least sunshine days is August (12.3 days).

Average UV index in May
McNary, LA

Average UV index in May - McNary, LA
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in May
McNary, LA

Average cloud cover in May - McNary, LA
  • Average cloud cover in May: 38

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).

Average visibility in May
McNary, LA

Average visibility in May - McNary, LA
  • Average visibility in May: 5mi

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

McNary, Louisiana, USA

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