August weather forecast
Glendale, IL

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Weather in August

The last month of the summer, August, is also a hot month in Glendale, Illinois, with an average temperature ranging between min 66.7°F (19.3°C) and max 86.5°F (30.3°C).

Temperature

A minimal variation is noted in Glendale's average high-temperature at the onset of August, reaching a still hot 86.5°F (30.3°C) from July's 88°F (31.1°C). During August, Glendale observes a consistent average nighttime temperature of 66.7°F (19.3°C).

Heat index

For most parts of August, the heat index is computed to be a sweltering 98.6°F (37°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Glendale, the average relative humidity in August is 76%.

Rainfall

In Glendale, in August, during 11.9 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Glendale, during the entire year, the rain falls for 118.3 days and collects up to 13.03" (331mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 34min.
On the first day of August, sunrise is at 5:59 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:24 pm CDT.

Sunshine

In Glendale, 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. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In August, a daily UV index of 6 turns into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

How hot is August in Glendale?

The high-temperature, in August, in Glendale, records 86.5°F (30.3°C), while the low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 98.6°F (37°C).

What is the average humidity in August in Glendale?

In Glendale, Illinois, the average relative humidity in August is 76%.

How many days does it rain in August in Glendale?

In August, in Glendale, the rain falls for 11.9 days. Throughout August, 1.3" (33mm) of precipitation is accumulated.

When it does not snow in Glendale?

In Glendale, Illinois, snow does not fall in April through October.

How many hours of daylight does Glendale have in August?

In Glendale, the average day length in August is 13h and 34min.

What time are sunrise and sunset in August in Glendale?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:02 pm. On the last day of the month, in Glendale, sunrise is at 6:24 am and sunset at 7:24 pm CDT.

How many hours of sunshine does Glendale have in August?

The average sunshine duration in August in Glendale is 10.3h.

What are the months with the highest UV index in Glendale?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Glendale.

What is the UV index intensity in August in Glendale?

In Glendale, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Glendale, IL

Average temperature in August - Glendale, 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).

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Average pressure in August
Glendale, IL

Average pressure in August - Glendale, 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).

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Average wind speed in August
Glendale, IL

Average wind speed in August - Glendale, 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).

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Average humidity in August
Glendale, IL

Average humidity in August - Glendale, 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%).

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Average rainfall in August
Glendale, IL

Average rainfall in August - Glendale, 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").

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Average rainfall days in August
Glendale, IL

Average rainfall days in August - Glendale, 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).

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Average snowfall in August
Glendale, IL

Average snowfall in August - Glendale, 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").

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Average snowfall days in August
Glendale, IL

Average snowfall days in August - Glendale, 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).

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Average daylight in August /
Average sunshine in August
Glendale, IL

Average daylight in August / Average sunshine in August - Glendale, IL
  • Average daylight in August: 13h and 4min

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).

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Average sunshine days in August
Glendale, IL

Average sunshine days in August - Glendale, 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).

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Average UV index in August
Glendale, IL

Average UV index in August - Glendale, 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).

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Average cloud cover in August
Glendale, IL

Average cloud cover in August - Glendale, 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).

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Average visibility in August
Glendale, IL

Average visibility in August - Glendale, 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).

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Glendale, Illinois, USA

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