Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August, on average, is the warmest month, registering a high temperature of 99°F (37.2°C) and a low of 79.9°F (26.6°C).Heat index
In August, the average heat index is calculated to be a blazing hot 123.8°F (51°C). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
With an average relative humidity of 58%, August is the least humid month in Alton.Rainfall
In August, in Alton, the rain falls for 5.3 days. Throughout August, 0.24" (6mm) of precipitation is accumulated. Throughout the year, there are 68.7 rainfall days, and 3.62" (92mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in August is 13h and 2min.On the first day of August in Alton, sunrise is at 6:59 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:53 pm CDT.
Sunshine
In August, the average sunshine is 9.7h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 8 during August morphs into the following directions:
Immediate care is essential; skin and eyes can be harmed in no time without it. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year in Alton?
How hot is it in Alton in August?
What is the least humid month in Alton?
What is the average humidity in August in Alton?
How much does it rain in Alton in August?
When it does not snow in Alton?
How many hours of daylight does Alton have in August?
When is the sunrise / sunset in August in Alton?
How long on average sun shines in August in Alton?
What are the months with the highest UV index in Alton?
How high is the UV index in August in Alton?
Average temperature in August
Alton, TX
- Average high temperature in August: 99°F
The warmest month (with the highest average high temperature) is August (99°F).
The month with the lowest average high temperature is January (69.4°F).
- Average low temperature in August: 79.9°F
The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure in August
Alton, 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
Alton, TX
- Average wind speed in August: 11.4mph
The windiest months (with the highest average wind speed) are May and July (12.9mph).
The calmest month (with the lowest average wind speed) is September (9.3mph).
Average humidity in August
Alton, TX
- Average humidity in August: 58%
The months with the highest relative humidity are May and December (67%).
The month with the lowest relative humidity is August (58%).
Average rainfall in August
Alton, TX
- Average rainfall in August: 0.24"
The wettest month (with the highest rainfall) is July (0.71").
The driest months (with the least rainfall) are February and December (0.12").
Average rainfall days in August
Alton, TX
- Average rainfall days in August: 5.3 days
The month with the highest number of rainy days is September (11.3 days).
The month with the least rainy days is February (2.9 days).
Average snowfall days in August
Alton, TX
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
Alton, 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 4min
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 36min).
Average sunshine days in August
Alton, TX
- Average sunshine days in August: 24.5 days
The month with the most sunshine days is March (24.9 days).
The month with the least sunshine days is September (15.6 days).
Average UV index in August
Alton, 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
Alton, TX
- Average cloud cover in August: 17
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in August
Alton, 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).
Alton, Texas, USA
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