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
Romeville's transition into May is noticed by a slight rise in the average high-temperature, advancing from 77.9°F (25.5°C) in April to a still moderately hot 84°F (28.9°C). May nights observe an average temperature dip to a comfortable 67.3°F (19.6°C).Heat index
May's average heat index is calculated to be a hot 93.2°F (34°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In May, the average relative humidity is 77%.Rainfall
In May, the rain falls for 14 days. Throughout May, 2.8" (71mm) of precipitation is accumulated. In Romeville, during the entire year, the rain falls for 172.6 days and collects up to 30.2" (767mm) of precipitation.Snowfall
In Romeville, Louisiana, snow does not fall in February through December.Daylight
In Romeville, 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 7:59 pm CDT.
Sunshine
The average sunshine in May is 10.2h.UV index
In Romeville, Louisiana, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is May?
What is the average humidity in May?
How many days 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?
How high is the UV index in May?
Average temperature in May
Romeville, LA
- Average high temperature in May: 84°F
The warmest months (with the highest average high temperature) are July and August (89.8°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in May: 67.3°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in May
Romeville, 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
Romeville, LA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in May
Romeville, LA
- Average humidity in May: 77%
The months with the highest relative humidity are February, July, August, September and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Romeville, LA
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in May
Romeville, LA
- Average rainfall days in May: 14 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8 days).
Average snowfall in May
Romeville, LA
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.04").
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
Romeville, LA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and December (0.1 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
Romeville, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in May
Romeville, LA
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (6.4 days).
Average UV index in May
Romeville, 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
Romeville, LA
- Average cloud cover in May: 30
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in May
Romeville, 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).
Romeville, Louisiana, USA
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