May weather forecastHarvey, LA
May
Weather in May
May, the last month of the spring in Harvey, is another warm month, with an average temperature varying between 71.2°F (21.8°C) and 82.9°F (28.3°C).Temperature
May brings a slight increase in the average high-temperature, progressing from 77°F (25°C) in April to a still warm 82.9°F (28.3°C). Throughout the month of May, Harvey witnesses an average temperature of 71.2°F (21.8°C).Heat index
The heat index value during May is appraised at a tropical 89.6°F (32°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 quite important for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In May, the average relative humidity is 73%.Rainfall
In Harvey, in May, during 8.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Harvey, during the entire year, the rain falls for 112.1 days and collects up to 9.37" (238mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in May is 13h and 40min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of May, sunrise is at 5:59 am and sunset at 7:56 pm CDT.
Sunshine
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 reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 7 during May translates into the following guidance:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, LA
- Average daylight in May: 13h and 42min
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 36min
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
Harvey, 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
Harvey, 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
Harvey, 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
Harvey, 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).
