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 average high-temperature is a still tropical 86.5°F (30.3°C) in August, hardly different from the 88°F (31.1°C) recorded in July. Grand Chain experiences an average low-temperature of 66.7°F (19.3°C) in month of August.Heat index
For most parts of August, the heat index is evaluated at a very hot 98.6°F (37°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. 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 a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 quite important for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The average relative humidity in August is 76%.Rainfall
In August, in Grand Chain, Illinois, the rain falls for 11.9 days. Throughout August, 1.3" (33mm) of precipitation is accumulated. In Grand Chain, during the entire year, the rain falls for 118.3 days and collects up to 13.03" (331mm) of precipitation.Snowfall
In Grand Chain, Illinois, snow does not fall in April through October.Daylight
In August, the average length of the day is 13h and 33min.On the first day of August in Grand Chain, sunrise is at 6:01 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:25 pm CDT.
Sunshine
In Grand Chain, the average sunshine in August is 10.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Grand Chain, Illinois. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: In August, the maximum UV index of 6 suggests this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
How hot is August in Grand Chain?
What is the average humidity in August in Grand Chain?
How many days does it rain in August in Grand Chain?
When it does not snow in Grand Chain?
What is the average length of the day in August in Grand Chain?
When are sunrise and sunset in August in Grand Chain?
How long on average sun shines in August in Grand Chain?
When is the highest UV index in Grand Chain?
What is the UV index reading in August in Grand Chain?
Average temperature in August
Grand Chain, IL
- Average high temperature in August: 86.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in August: 66.7°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 (27°F).
Average pressure in August
Grand Chain, 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 (29.94"Hg).
Average wind speed in August
Grand Chain, IL
- Average wind speed in August: 5.7mph
The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in August
Grand Chain, IL
- Average humidity in August: 76%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Grand Chain, IL
- Average rainfall in August: 1.3"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in August
Grand Chain, IL
- Average rainfall days in August: 11.9 days
The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).
Average snowfall in August
Grand Chain, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Grand Chain, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3.3 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
Grand Chain, IL
- Average daylight in August: 13h and 3min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 10h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in August
Grand Chain, IL
- Average sunshine days in August: 16.3 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in August
Grand Chain, 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
Grand Chain, IL
- Average cloud cover in August: 30
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in August
Grand Chain, 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).
Grand Chain, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
