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
In Fullerton, the average high-temperature in May slightly rises, from a moderately hot 77.4°F (25.2°C) in April, to a still warm 85.3°F (29.6°C). The temperature lowers to an average of 64.9°F (18.3°C) during May nights.Heat index
The heat index value during May is estimated at a fiery hot 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The average relative humidity in May is 76%.Rainfall
In Fullerton, in May, during 16 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Fullerton, during the entire year, the rain falls for 181.2 days and collects up to 39.17" (995mm) of precipitation.Snowfall
In Fullerton, snow does not fall in April through August, October and November.Daylight
In Fullerton, the average length of the day in May is 13h and 44min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:51 pm. On the last day of May, sunrise is at 6:08 am and sunset at 8:10 pm CDT.
Sunshine
The average sunshine in May is 9.4h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 7 in May leads to these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun 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?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
How high is the UV index in May?
Average temperature in May
Fullerton, LA
- Average high temperature in May: 85.3°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in May: 64.9°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 (41.2°F).
Average pressure in May
Fullerton, 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 (29.93"Hg).
Average wind speed in May
Fullerton, LA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in May
Fullerton, LA
- Average humidity in May: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Fullerton, LA
- Average rainfall in May: 3.43"
The wettest month (with the highest rainfall) is August (5").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in May
Fullerton, LA
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is August (20.5 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in May
Fullerton, LA
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, October and November (0").
Average snowfall days in May
Fullerton, LA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, October and November (0 days).
Average daylight in May /
Average sunshine in May
Fullerton, 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 months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in May
Fullerton, LA
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is August (8.8 days).
Average UV index in May
Fullerton, LA
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
Fullerton, LA
- Average cloud cover in May: 39
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in May
Fullerton, LA
- Average visibility in May: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
Fullerton, Louisiana, USA
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