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 onset of August in Downers Grove brings an average high-temperature of a still warm 81.1°F (27.3°C), nearly matching the July temperature. In Downers Grove, the August nights cool down to an average low of 64.8°F (18.2°C).Heat index
During August, the heat index is estimated at a tropical 86°F (30°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
In Downers Grove, the average relative humidity in August is 75%.Rainfall
In August, in Downers Grove, the rain falls for 12.2 days. Throughout August, 1.34" (34mm) of precipitation is accumulated. In Downers Grove, during the entire year, the rain falls for 118.5 days and collects up to 13.74" (349mm) of precipitation.Snowfall
In Downers Grove, Illinois, snow does not fall in May through September.Daylight
In August, the average length of the day in Downers Grove is 13h and 49min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of August, in Downers Grove, sunrise is at 6:17 am and sunset at 7:26 pm CDT.
Sunshine
August has the most sunshine of the year in Downers Grove, with an average of 10h of sunshine.UV index
The months with the highest UV index in Downers Grove are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In August, an average UV index of 6 transforms into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are August temperatures in Downers Grove?
What is the average humidity in August in Downers Grove?
How many days does it rain in August in Downers Grove?
When it does not snow in Downers Grove?
What is the average length of the day in August in Downers Grove?
What time are sunrise and sunset in August in Downers Grove?
What month has the most sunshine in Downers Grove?
How many hours of sunshine does Downers Grove have in August?
When is the highest UV index in Downers Grove?
What is the UV index reading in August in Downers Grove?
Average temperature in August
Downers Grove, IL
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 64.8°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in August
Downers Grove, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Downers Grove, IL
- Average wind speed in August: 6.1mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in August
Downers Grove, IL
- Average humidity in August: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Downers Grove, IL
- Average rainfall in August: 1.34"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in August
Downers Grove, IL
- Average rainfall days in August: 12.2 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in August
Downers Grove, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Downers Grove, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Downers Grove, IL
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Downers Grove, IL
- Average sunshine days in August: 14.8 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in August
Downers Grove, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in August
Downers Grove, IL
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in August
Downers Grove, 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).
Downers Grove, Illinois, USA
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