August weather forecast
Leland Grove, IL

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Weather in August

August, the last month of the summer in Leland Grove, is also a moderately hot month, with an average temperature varying between 64°F (17.8°C) and 81.9°F (27.7°C).

Temperature

Transitioning into August, Leland Grove experiences an average high-temperature of a still warm 81.9°F (27.7°C), marking a minor shift from the preceding month. Leland Grove reports an average low-temperature of 64°F (17.8°C) during the nights of August.

Heat index

In August, the average heat index is appraised at a hot 87.8°F (31°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In Leland Grove, the average relative humidity in August is 81%.

Rainfall

In August, in Leland Grove, the rain falls for 14.8 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. In Leland Grove, during the entire year, the rain falls for 140.2 days and collects up to 23.27" (591mm) of precipitation.

Snowfall

In Leland Grove, snow does not fall in May through October.

Daylight

In August, the average length of the day in Leland Grove, Illinois, is 13h and 41min.
On the first day of August, sunrise is at 5:58 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:31 pm CDT.

Sunshine

In August, the average sunshine in Leland Grove is 9.9h.

UV index

June 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 risk from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Shield from overexposure. Defense against sun-related harm is required. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the temperature in August in Leland Grove?

The high-temperature, in August, in Leland Grove, records 81.9°F (27.7°C), while the low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 87.8°F (31°C).

What is the average humidity in August in Leland Grove?

The average relative humidity in August in Leland Grove, Illinois, is 81%.

How many days does it rain in August in Leland Grove?

In Leland Grove, in August, it is raining for 14.8 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Leland Grove?

In Leland Grove, Illinois, snow does not fall in May through October.

How many hours of daylight does Leland Grove have in August?

In Leland Grove, the average day length in August is 13h and 41min.

When is the sunrise / sunset in August in Leland Grove?

On the first day of August in Leland Grove, sunrise is at 5:58 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:31 pm CDT.

How many hours of sunshine does Leland Grove have in August?

In August, the average sunshine duration in Leland Grove, Illinois, is 9.9h.

What is the month with the highest UV index in Leland Grove?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Leland Grove, Illinois.

What is the UV index reading in August in Leland Grove?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents 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
Leland Grove, IL

Average temperature in August - Leland Grove, IL
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in August
Leland Grove, IL

Average pressure in August - Leland Grove, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Leland Grove, IL

Average wind speed in August - Leland Grove, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in August
Leland Grove, IL

Average humidity in August - Leland Grove, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Leland Grove, IL

Average rainfall in August - Leland Grove, IL
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is June (2.72").
The driest month (with the least rainfall) is December (1.18").

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Average rainfall days in August
Leland Grove, IL

Average rainfall days in August - Leland Grove, IL
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in August
Leland Grove, IL

Average snowfall in August - Leland Grove, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Leland Grove, IL

Average snowfall days in August - Leland Grove, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.5 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
Leland Grove, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in August
Leland Grove, IL

Average sunshine days in August - Leland Grove, IL
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in August
Leland Grove, IL

Average UV index in August - Leland Grove, 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, February, November and December (UV index 2).

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Average cloud cover in August
Leland Grove, IL

Average cloud cover in August - Leland Grove, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June and September (Cloud cover 29).

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Average visibility in August
Leland Grove, IL

Average visibility in August - Leland Grove, IL
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Leland Grove, Illinois, USA

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