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
A subtle rise in the average high-temperature is observed during May, adjusting from 78.6°F (25.9°C) in April to a still moderately hot 85.5°F (29.7°C). Throughout May, an average low-temperature of 68°F (20°C) is expected.Heat index
Throughout May, the heat index is evaluated at a very hot 96.8°F (36°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In Katy, the average relative humidity in May is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.8 days and typically aggregates up to 4.29" (109mm) of precipitation.Snowfall
In Katy, snow does not fall in February through November.Daylight
The average length of the day in May is 13h and 40min.On the first day of May, sunrise is at 6:39 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:19 pm CDT.
Sunshine
The average sunshine in May is 8.9h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 7 in May suggests the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in May?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in Katy in May?
When it does not snow?
How many hours of daylight does Katy have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Katy have in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Katy, TX
- Average high temperature in May: 85.5°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (61°F).
- Average low temperature in May: 68°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure in May
Katy, TX
- Average pressure in May: 29.94"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
Katy, TX
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in May
Katy, TX
- Average humidity in May: 76%
The months with the highest relative humidity are February and March (78%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in May
Katy, TX
- Average rainfall in May: 4.29"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in May
Katy, TX
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is September (18.8 days).
The month with the least rainy days is January (10.5 days).
Average snowfall in May
Katy, TX
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Katy, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Katy, TX
- Average daylight in May: 13h and 4min
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: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in May
Katy, TX
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is January (18.7 days).
The month with the least sunshine days is September (8.9 days).
Average UV index in May
Katy, TX
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Katy, TX
- Average cloud cover in May: 42
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Katy, TX
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, June, August, September, October, November and December (6mi).
The months with the lowest visibility are April, May and July (5mi).
Katy, Texas, USA
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