August weather forecast
Saint Mary, KY

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Weather in August

The last month of the summer, August, is also a moderately hot month in Saint Mary, Kentucky, with an average temperature varying between 65.1°F (18.4°C) and 84.7°F (29.3°C).

Temperature

Entering August, Saint Mary's average high-temperature reads a still moderately hot 84.7°F (29.3°C), indicating a close resemblance to the previous month's climate. In Saint Mary, an average nighttime temperature of 65.1°F (18.4°C) is expected during August.

Heat index

In August, the average heat index is appraised at a sweltering 95°F (35°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In August, the rain falls for 15.8 days. Throughout August, 2.64" (67mm) of precipitation is accumulated. In Saint Mary, during the entire year, the rain falls for 163.3 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Saint Mary, the average length of the day in August is 13h and 34min.
On the first day of the month, sunrise is at 6:46 am and sunset at 8:49 pm. On the last day of August, sunrise is at 7:11 am and sunset at 8:11 pm EDT.

Sunshine

The average sunshine in August is 9.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

In Saint Mary, in August, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 65.1°F (18.4°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 95°F (35°C).

What is the average humidity in August in Saint Mary?

The average relative humidity in August in Saint Mary is 76%.

How many days does it rain in August in Saint Mary?

In Saint Mary, during August, the rain falls for 15.8 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

May through September 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 6:46 am and sunset at 8:49 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 8:11 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.6h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Saint Mary, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Saint Mary, KY

Average temperature in August - Saint Mary, KY
  • Average high temperature in August: 84.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in August: 65.1°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in August
Saint Mary, KY

Average pressure in August - Saint Mary, 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 (29.96"Hg).

Average wind speed in August
Saint Mary, KY

Average wind speed in August - Saint Mary, KY
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in August
Saint Mary, KY

Average humidity in August - Saint Mary, KY
  • Average humidity in August: 76%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (75%).

Average rainfall in August
Saint Mary, KY

Average rainfall in August - Saint Mary, KY
  • Average rainfall in August: 2.64"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (2.13").

Average rainfall days in August
Saint Mary, KY

Average rainfall days in August - Saint Mary, KY
  • Average rainfall days in August: 15.8 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (9.6 days).

Average snowfall in August
Saint Mary, KY

Average snowfall in August - Saint Mary, KY
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Saint Mary, KY

Average snowfall days in August - Saint Mary, KY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.8 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
Saint Mary, KY

Average daylight in August / Average sunshine in August - Saint Mary, 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: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in August
Saint Mary, KY

Average sunshine days in August - Saint Mary, KY
  • Average sunshine days in August: 13.1 days

The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is July (11 days).

Average UV index in August
Saint Mary, KY

Average UV index in August - Saint Mary, 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, November and December (UV index 2).

Average cloud cover in August
Saint Mary, KY

Average cloud cover in August - Saint Mary, KY
  • Average cloud cover in August: 30

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

Average visibility in August
Saint Mary, KY

Average visibility in August - Saint Mary, KY
  • Average visibility in August: 6mi

The months with the highest visibility are March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July and September (5mi).

Saint Mary, Kentucky, USA

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