August weather forecast
Caseyville, KY

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Weather in August

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

Temperature

Caseyville, Kentucky, experiences an average high-temperature of a warm 84.9°F (29.4°C) with the onset of August, subtly varied from July's 86.2°F (30.1°C). Throughout August, the average low-temperature in Caseyville records at an enjoyable 66.2°F (19°C).

Heat index

The heat index value during August is evaluated at a fiery hot 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

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

Rainfall

In August, the rain falls for 12.7 days. Throughout August, 1.54" (39mm) of precipitation is accumulated. In Caseyville, Kentucky, during the entire year, the rain falls for 136.4 days and collects up to 20" (508mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Caseyville 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 Caseyville, Kentucky, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

Is it hot in Caseyville during August?

The high-temperature during August is 84.9°F (29.4°C) and the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 95°F (35°C).

What is the average humidity in August in Caseyville?

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

How much does it rain in Caseyville in August?

In Caseyville, Kentucky, in August, it is raining for 12.7 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow in Caseyville?

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

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

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

When is the sunrise / sunset in August in Caseyville?

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, sunrise is at 6:22 am and sunset at 7:22 pm CDT.

How long on average sun shines in August in Caseyville?

In Caseyville, the average sunshine duration in August is 10.3h.

What are the months with the highest UV index in Caseyville?

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

What is the UV index reading in August in Caseyville?

In August, the average daily maximum UV index in Caseyville is 6. A UV Index 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
Caseyville, KY

Average temperature in August - Caseyville, KY
  • 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 (40.1°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 (27.5°F).

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Average pressure in August
Caseyville, KY

Average pressure in August - Caseyville, KY
  • 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).

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Average wind speed in August
Caseyville, KY

Average wind speed in August - Caseyville, KY
  • Average wind speed in August: 5.9mph

The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity in August
Caseyville, KY

Average humidity in August - Caseyville, KY
  • Average humidity in August: 77%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Caseyville, KY

Average rainfall in August - Caseyville, KY
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in August
Caseyville, KY

Average rainfall days in August - Caseyville, KY
  • Average rainfall days in August: 12.7 days

The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in August
Caseyville, KY

Average snowfall in August - Caseyville, KY
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Caseyville, KY

Average snowfall days in August - Caseyville, KY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.4 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
Caseyville, KY

Average daylight in August / Average sunshine in August - Caseyville, KY
  • 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 June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in August
Caseyville, KY

Average sunshine days in August - Caseyville, KY
  • Average sunshine days in August: 16.2 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).

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Average UV index in August
Caseyville, KY

Average UV index in August - Caseyville, KY
  • 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
Caseyville, KY

Average cloud cover in August - Caseyville, KY
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in August
Caseyville, KY

Average visibility in August - Caseyville, KY
  • 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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Caseyville, Kentucky, USA

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