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 weather displays an average high-temperature of a still moderately hot 80.2°F (26.8°C), slightly varied from July's 81.5°F (27.5°C). An average low-temperature of 63.7°F (17.6°C) is noted in Glendale Heights during the month of August.Humidity
The average relative humidity in August is 78%.Rainfall
In August, the rain falls for 12.1 days. Throughout August, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 119.1 rainfall days, and 10.83" (275mm) of precipitation is accumulated.Snowfall
In Glendale Heights, snow does not fall in May through September.Daylight
In Glendale Heights, the average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:26 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.9h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
What are the months with the most sunshine in Glendale Heights?
How long on average sun shines in August?
When is the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Glendale Heights, IL
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in August
Glendale Heights, 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
Glendale Heights, IL
- Average wind speed in August: 6.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in August
Glendale Heights, IL
- Average humidity in August: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Glendale Heights, IL
- Average rainfall in August: 0.94"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days in August
Glendale Heights, IL
- Average rainfall days in August: 12.1 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in August
Glendale Heights, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Glendale Heights, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Glendale Heights, 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: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Glendale Heights, IL
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in August
Glendale Heights, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Glendale Heights, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in August
Glendale 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).
Glendale Heights, Illinois, USA
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