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 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
The start of May is characterized by a subtle increase in the average high-temperature, transitioning from a warm 78.6°F (25.9°C) in April to a still moderately hot 84.7°F (29.3°C). Throughout May, the temperature tends to fall to a consistent average low of 66.2°F (19°C).Heat index
In May, the heat index is calculated to be a very hot 95°F (35°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are of high significance 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.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In May, the average relative humidity in Union is 77%.Rainfall
In Union, in May, it is raining for 13.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 165.4 rainfall days, and 26.93" (684mm) of precipitation is accumulated.Snowfall
In Union, snow does not fall in February through December.Daylight
In Union, the average length of the day in May is 13h and 41min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:41 pm. On the last day of May, sunrise is at 6:02 am and sunset at 8:00 pm CDT.
Sunshine
In May, the average sunshine is 9.8h.UV index
In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 6 in May leads to these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in May?
What is the average humidity in May in Union?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Union, LA
- Average high temperature in May: 84.7°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (60.1°F).
- Average low temperature in May: 66.2°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in May
Union, 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 and August (29.96"Hg).
Average wind speed in May
Union, LA
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in May
Union, LA
- Average humidity in May: 77%
The months with the highest relative humidity are February, September and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Union, LA
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is July (4.25").
The driest month (with the least rainfall) is November (1.18").
Average rainfall days in May
Union, LA
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in May
Union, LA
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Union, LA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Union, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in May
Union, LA
- Average sunshine days in May: 15 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in May
Union, LA
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Union, LA
- Average cloud cover in May: 33
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in May
Union, LA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, June, August, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July and September (5mi).
Union, Louisiana, USA
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