August weather forecast
Old Shawneetown, IL

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Weather in August

August, the last month of the summer in Old Shawneetown, is also a moderately hot month, with an average temperature fluctuating between 66.2°F (19°C) and 84.9°F (29.4°C).

Temperature

Old Shawneetown experiences a recorded average high-temperature of a moderately hot 84.9°F (29.4°C) in August, closely aligned with July's 86.2°F (30.1°C). In August, the average low-temperature is an enjoyable 66.2°F (19°C).

Heat index

For most parts of August, the heat index is evaluated at a fiery hot 95°F (35°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In August, the rain falls for 13.3 days. Throughout August, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 146.3 rainfall days, and 24.96" (634mm) of precipitation is accumulated.

Snowfall

In Old Shawneetown, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 34min.
On the first day of August, sunrise is at 5:56 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:22 pm CDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in August transforms into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in Old Shawneetown, records 84.9°F (29.4°C), while the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 95°F (35°C).

What is the average humidity in August?

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

How many days does it rain in August in Old Shawneetown?

In Old Shawneetown, in August, it is raining for 13.3 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 34min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:56 am and sunset at 8:00 pm. On the last day of the month, in Old Shawneetown, sunrise is at 6:22 am and sunset at 7:22 pm CDT.

How many hours of sunshine does Old Shawneetown have in August?

The average sunshine duration in August is 10.4h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Old Shawneetown, IL

Average temperature in August - Old Shawneetown, IL
  • Average high temperature in August: 84.9°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 66.2°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in August
Old Shawneetown, IL

Average pressure in August - Old Shawneetown, IL
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Old Shawneetown, IL

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

The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in August
Old Shawneetown, IL

Average humidity in August - Old Shawneetown, IL
  • Average humidity in August: 77%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Old Shawneetown, IL

Average rainfall in August - Old Shawneetown, IL
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.14").

Average rainfall days in August
Old Shawneetown, IL

Average rainfall days in August - Old Shawneetown, IL
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9 days).

Average snowfall in August
Old Shawneetown, IL

Average snowfall in August - Old Shawneetown, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Old Shawneetown, IL

Average snowfall days in August - Old Shawneetown, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.8 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
Old Shawneetown, IL

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

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 36min).

  • Average sunshine in August: 10h and 2min

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

Average sunshine days in August
Old Shawneetown, IL

Average sunshine days in August - Old Shawneetown, IL
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in August
Old Shawneetown, IL

Average UV index in August - Old Shawneetown, 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).

Average cloud cover in August
Old Shawneetown, IL

Average cloud cover in August - Old Shawneetown, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in August
Old Shawneetown, IL

Average visibility in August - Old Shawneetown, 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).

Old Shawneetown, Illinois, USA

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