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
Grayson in May observes a minor temperature shift, with average high-temperatures adjusting from 76.3°F (24.6°C) in April to a still warm 84.4°F (29.1°C). Grayson's nighttime temperature in May drops to an average of 64°F (17.8°C).Heat index
The heat index value during May is computed to be a tropical 93.2°F (34°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
In May, the average relative humidity is 76%.Rainfall
In Grayson, Louisiana, in May, during 15.7 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. In Grayson, during the entire year, the rain falls for 172.1 days and collects up to 39.45" (1002mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Grayson, the average length of the day in May is 13h and 49min.On the first day of May, sunrise is at 6:21 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:09 pm CDT.
Sunshine
The average sunshine in May is 9.6h.UV index
In May, the average daily maximum UV index in Grayson is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 6 translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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 much does it rain in May?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Grayson have in May?
What is the UV index intensity in May?
Average temperature in May
Grayson, LA
- Average high temperature in May: 84.4°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (54.9°F).
- Average low temperature in May: 64°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in May
Grayson, LA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Grayson, LA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in May
Grayson, LA
- Average humidity in May: 76%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Grayson, LA
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.4").
Average rainfall days in May
Grayson, LA
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in May
Grayson, LA
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Grayson, LA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Grayson, LA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in May
Grayson, LA
- Average sunshine days in May: 13 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in May
Grayson, LA
- Average UV index in May: 6
The months with the highest UV index are 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
Grayson, LA
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in May
Grayson, LA
- Average visibility in May: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Grayson, Louisiana, USA
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