May weather forecastCotulla, TX
May
Weather in May
The last month of the spring, May, is a hot month in Cotulla, Texas, with an average temperature fluctuating between 70.3°F (21.3°C) and 90.7°F (32.6°C).Temperature
With the onset of May, the average high-temperature subtly transitions from a moderately hot 84.7°F (29.3°C) in April to a tropical 90.7°F (32.6°C). Cotulla in May experiences a low-temperature average of 70.3°F (21.3°C).Heat index
May's heat index is computed to be a blistering 104°F (40°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The average relative humidity in May is 64%.Rainfall
May is the month with the most rainfall. Rain falls for 10.8 days and accumulates 2.05" (52mm) of precipitation.Snowfall
February through December are months without snowfall in Cotulla.Daylight
In May, the average length of the day is 13h and 34min.On the first day of May, sunrise is at 6:55 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:29 pm CDT.
Sunshine
In May, the average sunshine is 9h.UV index
In Cotulla, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. 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
Average temperature in May
Cotulla, TX
- Average high temperature in May: 90.7°F
The warmest month (with the highest average high temperature) is August (99.3°F).
The month with the lowest average high temperature is January (64.8°F).
- Average low temperature in May: 70.3°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in May
Cotulla, TX
- Average pressure in May: 29.88"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Cotulla, TX
- Average wind speed in May: 10.9mph
The windiest month (with the highest average wind speed) is May (10.9mph).
The calmest month (with the lowest average wind speed) is December (7.6mph).
Average humidity in May
Cotulla, TX
- Average humidity in May: 64%
The month with the highest relative humidity is December (66%).
The month with the lowest relative humidity is August (53%).
Average rainfall in May
Cotulla, TX
- Average rainfall in May: 2.05"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Cotulla, TX
- Average rainfall days in May: 10.8 days
The month with the highest number of rainy days is September (14 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in May
Cotulla, TX
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Cotulla, TX
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 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
Cotulla, TX
- Average daylight in May: 13h and 36min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in May
Cotulla, TX
- Average sunshine days in May: 16.9 days
The month with the most sunshine days is August (23.7 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in May
Cotulla, TX
- Average UV index in May: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Cotulla, TX
- Average cloud cover in May: 37
The months with the most cloud cover are February, March, May and December (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in May
Cotulla, TX
- 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).





