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
As Katy, Texas, welcomes May, the average high-temperature displays a subtle shift, adjusting from a warm 78.6°F (25.9°C) in April to a still moderately hot 85.5°F (29.7°C). Throughout May, Katy witnesses a nighttime temperature average of 68°F (20°C).Heat index
For May, the heat index is calculated to be a torrid 96.8°F (36°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Bear in mind that the heat index values are determined for shaded areas and light breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
In May, the average relative humidity in Katy, Texas, 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
February through November are months without snowfall in Katy.Daylight
In Katy, 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
In Katy, the average sunshine in May is 8.9h.UV index
The months with the highest UV index in Katy, Texas, are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a daily maximum UV index of 7 leads to the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
How hot is it in Katy in May?
What is the average humidity in May in Katy?
What is the wettest month in Katy?
How much does it rain in Katy in May?
When it does not snow in Katy?
What is the average length of the day in May in Katy?
What time are sunrise and sunset in May in Katy?
How long on average sun shines in May in Katy?
What are the months with the highest UV index in Katy?
What is the UV index reading in May in Katy?
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
Weather forecast for your location
2. Allow the app to use your location
