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 advent of August denotes an average high-temperature of a still warm 84.6°F (29.2°C), subtly different from July's 85.8°F (29.9°C). Fairview Heights encounters a steady low-temperature average of 66°F (18.9°C) throughout the month of August.Heat index
The average heat index in August is calculated to be a very hot 95°F (35°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In August, the average relative humidity is 78%.Rainfall
In Fairview Heights, during August, the rain falls for 12.9 days and regularly aggregates up to 3.31" (84mm) of precipitation. In Fairview Heights, Illinois, during the entire year, the rain falls for 147.1 days and collects up to 35.43" (900mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Fairview Heights, the average length of the day in August is 13h and 37min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:31 pm CDT.
Sunshine
In Fairview Heights, the average sunshine in August is 10h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 6 during August translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during August?
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 in Fairview Heights?
What time are sunrise and sunset in August?
How long on average sun shines in August?
What are the months with the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Fairview Heights, IL
- Average high temperature in August: 84.6°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in August: 66°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in August
Fairview Heights, 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
Fairview Heights, IL
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in August
Fairview Heights, IL
- 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 (71%).
Average rainfall in August
Fairview Heights, IL
- Average rainfall in August: 3.31"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in August
Fairview Heights, IL
- Average rainfall days in August: 12.9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in August
Fairview Heights, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Fairview Heights, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Fairview Heights, 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 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in August
Fairview Heights, IL
- Average sunshine days in August: 16.2 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in August
Fairview Heights, 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 and December (UV index 2).
Average cloud cover in August
Fairview Heights, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in August
Fairview Heights, 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).
Fairview Heights, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location