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
August's commencement is accompanied by an average high-temperature of a still warm 84.2°F (29°C), diverging marginally from July's 85.6°F (29.8°C). An average low-temperature of 65.8°F (18.8°C) is observed during the August nights.Heat index
The average heat index in August is calculated to be a fiery hot 95°F (35°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Understand that the heat index values take into account shaded locations and mild winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
May, July and August, with an average relative humidity of 79%, are the most humid months.Rainfall
In Mascoutah, during August, the rain falls for 11 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Mascoutah, Illinois, during the entire year, the rain falls for 110.1 days and collects up to 11.1" (282mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in August is 13h and 37min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:30 pm CDT.
Sunshine
In Mascoutah, the average sunshine in August is 10.2h.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 exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 during August translates into the following directions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in August?
What are the most humid months?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
How many hours of sunshine does Mascoutah have in August?
When is the highest UV index?
What is the UV index reading in August?
Average temperature in August
Mascoutah, IL
- Average high temperature in August: 84.2°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 (37.8°F).
- Average low temperature in August: 65.8°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in August
Mascoutah, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Mascoutah, IL
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in August
Mascoutah, IL
- Average humidity in August: 79%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Mascoutah, IL
- Average rainfall in August: 1.26"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in August
Mascoutah, IL
- Average rainfall days in August: 11 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in August
Mascoutah, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Mascoutah, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Mascoutah, IL
- 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 30min).
- Average sunshine in August: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in August
Mascoutah, IL
- Average sunshine days in August: 18 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in August
Mascoutah, IL
- 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, November and December (UV index 2).
Average cloud cover in August
Mascoutah, IL
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in August
Mascoutah, IL
- 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).
Mascoutah, Illinois, USA
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