August weather forecastMcAllen, TX
August
Weather in August
As August sets in, McAllen, Texas faces the last stretch of the summer months. The weather marks a period of high temperature, slightly falling from the peak experienced in July. Despite the heat, it remains a much-loved period for outdoor activities with longer daylight hours. An interesting shift in the pattern is seen with the decrease in rainfall to 0.79" (20mm), making August the driest month of the year. With lesser rain, August serves as a great time for vacationers to explore McAllen, Texas.Temperature
McAllen reaches its highest average temperatures in August, measuring 98.6°F (37°C) at the peak and 79.7°F (26.5°C) at the lowest.Heat index
Throughout August, the heat index is evaluated at a blazing hot 123.8°F (51°C). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.Heat index readings emphasize conditions of light breezes and shaded spots. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
With an average relative humidity of 59%, August is the least humid month.Rainfall
In August, the rain falls for 6.6 days. Throughout August, 0.79" (20mm) of precipitation is accumulated. In McAllen, during the entire year, the rain falls for 103.3 days and collects up to 12.72" (323mm) of precipitation.Snowfall
In McAllen, snow does not fall in February through December.Daylight
The average length of the day in August is 13h and 2min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:19 pm. On the last day of August, sunrise is at 7:12 am and sunset at 7:53 pm CDT.
Sunshine
The average sunshine in August is 9.8h.UV index
The months with the highest UV index in McAllen are July and August, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In August, the maximum UV index of 8 suggests these recommendations:
Always take precautions; unprotected eyes and skin can be damaged rapidly. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
McAllen, TX
- Average high temperature in August: 98.6°F
The warmest month (with the highest average high temperature) is August (98.6°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in August: 79.7°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in August
McAllen, TX
- Average pressure in August: 29.9"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 August
McAllen, TX
- Average wind speed in August: 11.1mph
The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is September (9.1mph).
Average humidity in August
McAllen, TX
- Average humidity in August: 59%
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is August (59%).
Average rainfall in August
McAllen, TX
- Average rainfall in August: 0.79"
The wettest month (with the highest rainfall) is September (2.13").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in August
McAllen, TX
- Average rainfall days in August: 6.6 days
The month with the highest number of rainy days is September (15.4 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in August
McAllen, TX
- Average snowfall in August: 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 August
McAllen, TX
- Average snowfall days in August: 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 August /
Average sunshine in August
McAllen, TX
- Average daylight in August: 13h and 0min
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 August: 9h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in August
McAllen, TX
- Average sunshine days in August: 23.3 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is September (12.5 days).
Average UV index in August
McAllen, TX
- Average UV index in August: 8
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 August
McAllen, TX
- Average cloud cover in August: 17
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in August
McAllen, TX
- Average visibility in August: 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).
