August weather forecast
Glendale, MO

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Weather in August

August, the last month of the summer in Glendale, is also a moderately hot month, with an average temperature ranging between min 67.1°F (19.5°C) and max 85.5°F (29.7°C).

Temperature

The arrival of August coincides with an average high-temperature of a moderately hot 85.5°F (29.7°C), indicating a minimal shift from July's 86.9°F (30.5°C). An average low-temperature of 67.1°F (19.5°C) marks the nights throughout August.

Heat index

In August, the heat index is evaluated at a fiery hot 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 14.2 days. Throughout August, 3.31" (84mm) of precipitation is accumulated. In Glendale, during the entire year, the rain falls for 144.8 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

April through October are months without snowfall in Glendale.

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

Sunshine

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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 in August translates into this advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

Glendale in August has an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 67.1°F (19.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 95°F (35°C).

What is the average humidity in August?

In Glendale, the average relative humidity in August is 75%.

How many days does it rain in August?

In Glendale, in August, during 14.2 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 37min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

How long on average sun shines in August?

In Glendale, the average sunshine duration in August is 10.3h.

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

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

What is the UV index reading in August?

In Glendale, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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, MO

Average temperature in August - Glendale, MO
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 67.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in August
Glendale, MO

Average pressure in August - Glendale, MO
  • 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
Glendale, MO

Average wind speed in August - Glendale, MO
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in August
Glendale, MO

Average humidity in August - Glendale, MO
  • Average humidity in August: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Glendale, MO

Average rainfall in August - Glendale, MO
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in August
Glendale, MO

Average rainfall days in August - Glendale, MO
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in August
Glendale, MO

Average snowfall in August - Glendale, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Glendale, MO

Average snowfall days in August - Glendale, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Glendale, MO
  • 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in August
Glendale, MO

Average sunshine days in August - Glendale, MO
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in August
Glendale, MO

Average UV index in August - Glendale, MO
  • 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
Glendale, MO

Average cloud cover in August - Glendale, MO
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in August
Glendale, MO

Average visibility in August - Glendale, MO
  • 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, Missouri, USA

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