August weather forecast
Jonesboro, IL

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Weather in August

The last month of the summer, August, is another tropical month in Jonesboro, Illinois, with an average temperature varying between 86.5°F (30.3°C) and 66.7°F (19.3°C).

Temperature

The advent of August sees the average high-temperature at a still hot 86.5°F (30.3°C), subtly shifted from July's 88.3°F (31.3°C). Throughout August, Jonesboro's nights cool down to an average of 66.7°F (19.3°C).

Heat index

The average heat index in August is evaluated at a torrid 98.6°F (37°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. 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.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In August, the rain falls for 14.8 days. Throughout August, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 143 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day in Jonesboro is 13h and 34min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine is 10.2h.

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 unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

Is it hot in Jonesboro during August?

In August, in Jonesboro, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is evaluated at 98.6°F (37°C).

What is the average humidity in August in Jonesboro?

In August, the average relative humidity is 76%.

How much does it rain in Jonesboro in August?

In Jonesboro, during August, the rain falls for 14.8 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Jonesboro?

In Jonesboro, Illinois, snow does not fall in May through September.

How many hours of daylight does Jonesboro have in August?

In Jonesboro, Illinois, the average day length in August is 13h and 34min.

What time are sunrise and sunset in August in Jonesboro?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:04 pm. On the last day of the month, in Jonesboro, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

How long on average sun shines in August in Jonesboro?

In Jonesboro, the average sunshine duration in August is 10.2h.

When is the highest UV index in Jonesboro?

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

What is the UV index intensity in August in Jonesboro?

The average daily maximum UV index in August in Jonesboro, Illinois, is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Jonesboro, IL

Average temperature in August - Jonesboro, IL
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in August
Jonesboro, IL

Average pressure in August - Jonesboro, 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 (29.94"Hg).

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Average wind speed in August
Jonesboro, IL

Average wind speed in August - Jonesboro, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Jonesboro, IL

Average humidity in August - Jonesboro, IL
  • Average humidity in August: 76%

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

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Average rainfall in August
Jonesboro, IL

Average rainfall in August - Jonesboro, IL
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days in August
Jonesboro, IL

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

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in August
Jonesboro, IL

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

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Jonesboro, IL

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

The month with the highest number of snowfall days is January (4.6 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
Jonesboro, IL

Average daylight in August / Average sunshine in August - Jonesboro, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Jonesboro, IL

Average sunshine days in August - Jonesboro, IL
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in August
Jonesboro, IL

Average UV index in August - Jonesboro, 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).

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Average cloud cover in August
Jonesboro, IL

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

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Average visibility in August
Jonesboro, IL

Average visibility in August - Jonesboro, 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).

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Jonesboro, Illinois, USA

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