Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May in Gretna signals a minor shift in the average high-temperature, moving from April's 77°F (25°C) to a still warm 82.9°F (28.3°C). Gretna records an average nighttime low of 71.2°F (21.8°C) in May.Heat index
The heat index in May is estimated at a tropical 89.6°F (32°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
The average relative humidity in May in Gretna, Louisiana, is 73%.Rainfall
In May, the rain falls for 8.6 days. Throughout May, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.Snowfall
In Gretna, Louisiana, snow does not fall in February through December.Daylight
In May, the average length of the day in Gretna is 13h and 40min.On the first day of May, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:56 pm CDT.
Sunshine
In Gretna, the average sunshine in May is 10.6h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In May, a daily UV index of 7 turns into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
How hot is May in Gretna?
What is the average humidity in May in Gretna?
How many days does it rain in May in Gretna?
When it does not snow in Gretna?
How many hours of daylight does Gretna have in May?
When are sunrise and sunset in May in Gretna?
How long on average sun shines in May in Gretna?
What is the month with the highest UV index in Gretna?
How high is the UV index in May in Gretna?
Average temperature in May
Gretna, LA
- Average high temperature in May: 82.9°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in May: 71.2°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in May
Gretna, LA
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in May
Gretna, LA
- Average wind speed in May: 8.2mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in May
Gretna, LA
- Average humidity in May: 73%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Gretna, LA
- Average rainfall in May: 0.75"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in May
Gretna, LA
- Average rainfall days in May: 8.6 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in May
Gretna, LA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Gretna, LA
- Average daylight in May: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in May
Gretna, LA
- Average sunshine days in May: 19.3 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in May
Gretna, LA
- Average UV index in May: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Gretna, LA
- Average cloud cover in May: 26
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in May
Gretna, 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).
Gretna, Louisiana, USA
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