August weather forecast
Pekin, IL

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Weather in August

The last month of the summer, August, is another warm month in Pekin, Illinois, with an average temperature varying between 81.3°F (27.4°C) and 63.3°F (17.4°C).

Temperature

August records an average high-temperature of a still warm 81.3°F (27.4°C), indicating a minor variation from the preceding month. Throughout August, an average nighttime temperature of 63.3°F (17.4°C) is experienced.

Heat index

During August, the heat index is computed to be a tropical 87.8°F (31°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

The average relative humidity in August is 81%.

Rainfall

In Pekin, in August, it is raining for 14.4 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 153.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Pekin, the average length of the day in August is 13h and 44min.
On the first day of August in Pekin, sunrise is at 5:56 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:31 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

In Pekin, 81.3°F (27.4°C) is the average high-temperature and 63.3°F (17.4°C) is the average low-temperature during August. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 81%.

How much does it rain in August?

In Pekin, in August, during 14.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in August?

In Pekin, the average day length in August is 13h and 44min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:56 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:31 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.9h.

What is the UV index intensity in August?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Pekin, IL

Average temperature in August - Pekin, IL
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in August
Pekin, IL

Average pressure in August - Pekin, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Pekin, IL

Average wind speed in August - Pekin, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Pekin, IL

Average humidity in August - Pekin, 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 (71%).

Average rainfall in August
Pekin, IL

Average rainfall in August - Pekin, IL
  • Average rainfall in August: 2.17"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (1.54").

Average rainfall days in August
Pekin, IL

Average rainfall days in August - Pekin, IL
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.3 days).

Average snowfall in August
Pekin, IL

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

The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Pekin, IL

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

The month with the highest number of snowfall days is January (10.6 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
Pekin, IL

Average daylight in August / Average sunshine in August - Pekin, 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 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in August
Pekin, IL

Average sunshine days in August - Pekin, IL
  • Average sunshine days in August: 14.2 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (10 days).

Average UV index in August
Pekin, IL

Average UV index in August - Pekin, IL
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Pekin, IL

Average cloud cover in August - Pekin, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in August
Pekin, IL

Average visibility in August - Pekin, 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).

Pekin, Illinois, USA

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