August weather forecast
Oakley, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Oakley, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 63.7°F (17.6°C).

Temperature

August reports an average high-temperature of a still moderately hot 81.1°F (27.3°C), slightly varied from July's 82°F (27.8°C). The nighttime temperature in Oakley dips to a comfortable 63.7°F (17.6°C) on average during August.

Heat index

August's mean heat index is calculated to be a tropical 87.8°F (31°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in August in Oakley is 82%.

Rainfall

In August, the rain falls for 14.8 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. In Oakley, during the entire year, the rain falls for 147.7 days and collects up to 24.61" (625mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 41min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:08 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:27 pm CDT.

Sunshine

In Oakley, the average sunshine in August is 9.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 in August translates into this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Oakley in August?

In Oakley, in August, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 63.7°F (17.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August in Oakley?

In August, the average relative humidity is 82%.

How many days does it rain in August in Oakley?

In Oakley, Illinois, during August, the rain falls for 14.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Oakley?

In Oakley, snow does not fall in May through October.

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

In August, the average day length in Oakley, Illinois, is 13h and 41min.

When is the sunrise / sunset in August in Oakley?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 8:08 pm. On the last day of the month, in Oakley, sunrise is at 6:22 am and sunset at 7:27 pm CDT.

How long on average sun shines in August in Oakley?

In Oakley, Illinois, the average sunshine duration in August is 9.8h.

When is the highest UV index in Oakley?

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

What is the UV index intensity in August in Oakley?

In Oakley, Illinois, the average daily maximum UV index in August is 6. A UV Index value 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
Oakley, IL

Average temperature in August - Oakley, IL
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in August
Oakley, IL

Average pressure in August - Oakley, 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 (29.92"Hg).

Average wind speed in August
Oakley, IL

Average wind speed in August - Oakley, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in August
Oakley, IL

Average humidity in August - Oakley, IL
  • Average humidity in August: 82%

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

Average rainfall in August
Oakley, IL

Average rainfall in August - Oakley, IL
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is December (1.38").

Average rainfall days in August
Oakley, IL

Average rainfall days in August - Oakley, IL
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7 days).

Average snowfall in August
Oakley, IL

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

The month with the highest snowfall is January (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Oakley, IL

Average snowfall days in August - Oakley, 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 May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 0min).
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 6min).

Average sunshine days in August
Oakley, IL

Average sunshine days in August - Oakley, IL
  • Average sunshine days in August: 12.8 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in August
Oakley, IL

Average UV index in August - Oakley, 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).

Average cloud cover in August
Oakley, IL

Average cloud cover in August - Oakley, IL
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June and September (Cloud cover 30).

Average visibility in August
Oakley, IL

Average visibility in August - Oakley, 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).

Oakley, Illinois, USA

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