August weather forecast
Pinckneyville, IL

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Weather in August

The last month of the summer, August, is another warm month in Pinckneyville, Illinois, with an average temperature ranging between max 85.5°F (29.7°C) and min 66°F (18.9°C).

Temperature

August's presence records an average high-temperature of a warm 85.5°F (29.7°C), closely mirroring July's climate. In August, Pinckneyville reports a consistent average low-temperature of 66°F (18.9°C) during the nights.

Heat index

The heat index for August is computed to be a sweltering 96.8°F (36°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Pinckneyville, in August, it is raining for 14 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 147.6 rainfall days, and 29.17" (741mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August is 13h and 35min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:28 pm CDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Pinckneyville. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: During August, 6 as the daily maximum UV index converts into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The average high-temperature and low-temperature during August are 85.5°F (29.7°C) and 66°F (18.9°C) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 96.8°F (36°C).

What is the average humidity in August?

In Pinckneyville, the average relative humidity in August is 77%.

How many days does it rain in August?

In Pinckneyville, in August, during 14 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in August?

The average day length in August in Pinckneyville is 13h and 35min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:28 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.1h.

What are the months with the highest UV index?

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

What is the UV index intensity in August?

In Pinckneyville, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Pinckneyville, IL

Average temperature in August - Pinckneyville, IL
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in August
Pinckneyville, IL

Average pressure in August - Pinckneyville, 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 (29.93"Hg).

Average wind speed in August
Pinckneyville, IL

Average wind speed in August - Pinckneyville, IL
  • Average wind speed in August: 5.8mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in August
Pinckneyville, IL

Average humidity in August - Pinckneyville, IL
  • Average humidity in August: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Pinckneyville, IL

Average rainfall in August - Pinckneyville, IL
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in August
Pinckneyville, IL

Average rainfall days in August - Pinckneyville, IL
  • Average rainfall days in August: 14 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is December (8.2 days).

Average snowfall in August
Pinckneyville, IL

Average snowfall in August - Pinckneyville, 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, September and October (0").

Average snowfall days in August
Pinckneyville, IL

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

The month with the highest number of snowfall days is January (5.4 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
Pinckneyville, IL

Average daylight in August / Average sunshine in August - Pinckneyville, IL
  • 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 36min).

  • Average sunshine in August: 10h and 1min

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

Average sunshine days in August
Pinckneyville, IL

Average sunshine days in August - Pinckneyville, IL
  • Average sunshine days in August: 14.7 days

The months with the most sunshine days are October and November (19.5 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in August
Pinckneyville, IL

Average UV index in August - Pinckneyville, 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
Pinckneyville, IL

Average cloud cover in August - Pinckneyville, IL
  • Average cloud cover in August: 29

The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in August
Pinckneyville, IL

Average visibility in August - Pinckneyville, 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).

Pinckneyville, Illinois, USA

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