August weather forecast
Perryville, MO

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Weather in August

The last month of the summer, August, is also a hot month in Perryville, Missouri, with an average temperature fluctuating between 86.2°F (30.1°C) and 66°F (18.9°C).

Temperature

A minimal variation is noted in Perryville's average high-temperature at the onset of August, reaching a still hot 86.2°F (30.1°C) from July's 87.8°F (31°C). In Perryville, an average low-temperature of 66°F (18.9°C) is recorded during August nights.

Heat index

August's mean heat index is appraised at a sweltering 98.6°F (37°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Perryville, the average relative humidity in August is 76%.

Rainfall

In Perryville, Missouri, during August, the rain falls for 10.9 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Perryville, during the entire year, the rain falls for 111.9 days and collects up to 10.43" (265mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 34min.
On the first day of August in Perryville, Missouri, sunrise is at 6:03 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:29 pm CDT.

Sunshine

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 in Perryville, Missouri. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 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. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is August in Perryville?

In August, the average high-temperature and low-temperature in Perryville are 86.2°F (30.1°C) and 66°F (18.9°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 98.6°F (37°C).

What is the average humidity in August in Perryville?

In August, the average relative humidity in Perryville, Missouri, is 76%.

How many days does it rain in August in Perryville?

In Perryville, Missouri, during August, the rain falls for 10.9 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Perryville?

In Perryville, Missouri, snow does not fall in April through September.

How many hours of daylight does Perryville have in August?

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

When are sunrise and sunset in August in Perryville?

On the first day of August in Perryville, sunrise is at 6:03 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:29 pm CDT.

How many hours of sunshine does Perryville have in August?

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

When is the highest UV index in Perryville?

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

What is the UV index intensity in August in Perryville?

The average daily maximum UV index in August in Perryville, Missouri, is 6. A UV Index of 6 to 7 symbolizes 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
Perryville, MO

Average temperature in August - Perryville, MO
  • Average high temperature in August: 86.2°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.4°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in August
Perryville, MO

Average pressure in August - Perryville, MO
  • 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).

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Average wind speed in August
Perryville, MO

Average wind speed in August - Perryville, MO
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Perryville, MO

Average humidity in August - Perryville, MO
  • 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
Perryville, MO

Average rainfall in August - Perryville, MO
  • Average rainfall in August: 0.98"

The wettest months (with the highest rainfall) are April and May (1.22").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in August
Perryville, MO

Average rainfall days in August - Perryville, MO
  • Average rainfall days in August: 10.9 days

The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall in August
Perryville, MO

Average snowfall in August - Perryville, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in August
Perryville, MO

Average snowfall days in August - Perryville, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (3.7 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
Perryville, MO

Average daylight in August / Average sunshine in August - Perryville, MO
  • 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 months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Perryville, MO

Average sunshine days in August - Perryville, MO
  • Average sunshine days in August: 16.5 days

The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (13.5 days).

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Average UV index in August
Perryville, MO

Average UV index in August - Perryville, MO
  • 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
Perryville, MO

Average cloud cover in August - Perryville, MO
  • Average cloud cover in August: 28

The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in August
Perryville, MO

Average visibility in August - Perryville, MO
  • 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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Perryville, Missouri, USA

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