August weather forecast
Mounds, IL

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Weather in August

August, the last month of the summer in Mounds, is another hot month, with an average temperature varying between 86.4°F (30.2°C) and 67.5°F (19.7°C).

Temperature

Mounds's average high-temperature in August is a still tropical 86.4°F (30.2°C), marking an insignificant difference from the 88.2°F (31.2°C) of July. In Mounds, the nighttime temperature averages to a refreshing 67.5°F (19.7°C) during August.

Heat index

For August, the heat index is computed to be a fiery hot 98.6°F (37°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

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

Rainfall

In Mounds, during August, the rain falls for 13.6 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Mounds.

Daylight

The average length of the day in August is 13h and 32min.
On the first day of August in Mounds, sunrise is at 6:02 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:26 pm CDT.

Sunshine

In August, the average sunshine in Mounds is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Mounds. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot does it get in Mounds in August?

In Mounds, 86.4°F (30.2°C) is the average high-temperature and 67.5°F (19.7°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 98.6°F (37°C).

What is the average humidity in August in Mounds?

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

How much does it rain in Mounds in August?

In August, in Mounds, the rain falls for 13.6 days. Throughout August, 2.72" (69mm) of precipitation is accumulated.

When it does not snow in Mounds?

In Mounds, snow does not fall in May through September.

What is the average length of the day in August in Mounds?

In August, the average day length in Mounds is 13h and 32min.

What time are sunrise and sunset in August in Mounds?

On the first day of August, sunrise is at 6:02 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:26 pm CDT.

How many hours of sunshine does Mounds have in August?

The average sunshine duration in August is 10.4h.

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

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

How high is the UV index in August in Mounds?

In Mounds, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Mounds, IL

Average temperature in August - Mounds, IL
  • Average high temperature in August: 86.4°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in August
Mounds, IL

Average pressure in August - Mounds, 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
Mounds, IL

Average wind speed in August - Mounds, IL
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in August
Mounds, IL

Average humidity in August - Mounds, IL
  • Average humidity in August: 76%

The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in August
Mounds, IL

Average rainfall in August - Mounds, IL
  • Average rainfall in August: 2.72"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days in August
Mounds, IL

Average rainfall days in August - Mounds, IL
  • Average rainfall days in August: 13.6 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in August
Mounds, IL

Average snowfall in August - Mounds, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Mounds, IL

Average snowfall days in August - Mounds, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.8 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
Mounds, IL

Average daylight in August / Average sunshine in August - Mounds, 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 42min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Mounds, IL

Average sunshine days in August - Mounds, IL
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in August
Mounds, IL

Average UV index in August - Mounds, 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
Mounds, IL

Average cloud cover in August - Mounds, IL
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in August
Mounds, IL

Average visibility in August - Mounds, 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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Mounds, Illinois, USA

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