May weather forecastWeslaco, TX
May
Weather in May
The last month of the spring, May, is also a hot month in Weslaco, Texas, with an average temperature ranging between max 90.9°F (32.7°C) and min 72.9°F (22.7°C).Temperature
In May, Weslaco experiences a minor shift in meteorological conditions with average high-temperatures marked at a still tropical 90.9°F (32.7°C), closely mirroring the climate in April. Weslaco, during May nights, observes an average temperature of 72.9°F (22.7°C).Heat index
Throughout May, the heat index is computed to be a blisteringly hot 109.4°F (43°C). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.Heat index details are generally centered around shaded locations and a mild breeze. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
With an average relative humidity of 71%, May is the most humid month.Rainfall
In Weslaco, in May, during 8.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Weslaco, during the entire year, the rain falls for 102.8 days and collects up to 12.99" (330mm) of precipitation.Snowfall
In Weslaco, snow does not fall in February through December.Daylight
In Weslaco, the average length of the day in May is 13h and 26min.On the first day of the month, sunrise is at 6:53 am and sunset at 8:04 pm. On the last day of May, in Weslaco, sunrise is at 6:39 am and sunset at 8:19 pm CDT.
Sunshine
The average sunshine in May is 9.6h.UV index
In Weslaco, Texas, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 7 in May translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Weslaco, TX
- Average high temperature in May: 90.9°F
The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (69.6°F).
- Average low temperature in May: 72.9°F
The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure in May
Weslaco, TX
- Average pressure in May: 29.87"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in May
Weslaco, TX
- Average wind speed in May: 11.7mph
The windiest months (with the highest average wind speed) are March, April and May (11.7mph).
The calmest month (with the lowest average wind speed) is September (8.5mph).
Average humidity in May
Weslaco, TX
- Average humidity in May: 71%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (61%).
Average rainfall in May
Weslaco, TX
- Average rainfall in May: 1.38"
The wettest months (with the highest rainfall) are July and September (2.01").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in May
Weslaco, TX
- Average rainfall days in May: 8.5 days
The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is July (6.4 days).
Average snowfall in May
Weslaco, TX
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.12").
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
Weslaco, TX
- 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
Weslaco, TX
- Average daylight in May: 13h and 24min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in May: 9h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in May
Weslaco, TX
- Average sunshine days in May: 20.4 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in May
Weslaco, TX
- Average UV index in May: 7
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in May
Weslaco, TX
- Average cloud cover in May: 35
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in May
Weslaco, 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).





