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 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
The transition from July to August sees average high-temperatures adjusting to a still moderately hot 84.6°F (29.2°C), from a not significantly different 85.6°F (29.8°C). August nights cool down to an average low-temperature of 66°F (18.9°C).Heat index
The heat index for August is evaluated at a sweltering 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In Mount Vernon, the average relative humidity in August is 78%.Rainfall
In August, the rain falls for 15.5 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. In Mount Vernon, during the entire year, the rain falls for 169.9 days and collects up to 39.41" (1001mm) of precipitation.Snowfall
May through October are months without snowfall in Mount Vernon.Daylight
The average length of the day in August is 13h and 35min.On the first day of the month, sunrise is at 5:55 am and sunset at 8:00 pm. On the last day of August, sunrise is at 6:21 am and sunset at 7:22 pm CDT.
Sunshine
The average sunshine in August is 10.4h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 6 in August transforms into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August in Mount Vernon?
What is the average humidity in August in Mount Vernon?
How many days does it rain in August in Mount Vernon?
When it does not snow in Mount Vernon?
How many hours of daylight does Mount Vernon have in August?
When are sunrise and sunset in August in Mount Vernon?
How many hours of sunshine does Mount Vernon have in August?
What are the months with the highest UV index in Mount Vernon?
How high is the UV index in August in Mount Vernon?
Average temperature in August
Mount Vernon, IN
- Average high temperature in August: 84.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.4°F).
- Average low temperature in August: 66°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in August
Mount Vernon, IN
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Mount Vernon, IN
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in August
Mount Vernon, IN
- Average humidity in August: 78%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Mount Vernon, IN
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is April (5.28").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in August
Mount Vernon, IN
- Average rainfall days in August: 15.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in August
Mount Vernon, IN
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Mount Vernon, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Mount Vernon, IN
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 10h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in August
Mount Vernon, IN
- Average sunshine days in August: 12.8 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in August
Mount Vernon, IN
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in August
Mount Vernon, IN
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in August
Mount Vernon, IN
- 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).
Mount Vernon, Indiana, USA
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