August weather forecast
Saint Robert, MO

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Weather in August

August, the last month of the summer in Saint Robert, is also a hot month, with an average temperature varying between 65.8°F (18.8°C) and 87.3°F (30.7°C).

Temperature

Entering August, the average high-temperature is recorded at a still hot 87.3°F (30.7°C), exhibiting a minimal shift from July's 89.2°F (31.8°C). Saint Robert, in August, witnesses an average low-temperature of 65.8°F (18.8°C).

Heat index

The heat index value during August is appraised at a very hot 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. 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. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The months with the lowest humidity are August through October, with an average relative humidity of 73%.

Rainfall

In Saint Robert, in August, it is raining for 14.4 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, in Saint Robert, there are 147.7 rainfall days, and 31.46" (799mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Saint Robert, the average length of the day in August is 13h and 35min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:17 pm. On the last day of August, in Saint Robert, sunrise is at 6:38 am and sunset at 7:39 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index in Saint Robert are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight 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

How hot is August in Saint Robert?

An average high-temperature, in August, in Saint Robert, is 87.3°F (30.7°C) and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is appraised at 100.4°F (38°C).

What is the least humid month in Saint Robert?

The months with the lowest humidity are August through October, with an average relative humidity of 73%.

What is the average humidity in August in Saint Robert?

In Saint Robert, the average relative humidity in August is 73%.

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

In Saint Robert, during August, the rain falls for 14.4 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Saint Robert?

June through September are months without snowfall.

How many hours of daylight does Saint Robert have in August?

In Saint Robert, the average day length in August is 13h and 35min.

When is the sunrise / sunset in August in Saint Robert?

In August, on the first day of the month, sunrise is at 6:12 am and sunset at 8:17 pm. On the last day of the month, in Saint Robert, sunrise is at 6:38 am and sunset at 7:39 pm CDT.

How many hours of sunshine does Saint Robert have in August?

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

When is the highest UV index in Saint Robert?

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

How high is the UV index in August in Saint Robert?

In August, the average daily maximum UV index in Saint Robert, Missouri, is 6. A UV Index estimate of 6 to 7 represents 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
Saint Robert, MO

Average temperature in August - Saint Robert, MO
  • Average high temperature in August: 87.3°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25°F).

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Average pressure in August
Saint Robert, MO

Average pressure in August - Saint Robert, 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
Saint Robert, MO

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

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in August
Saint Robert, MO

Average humidity in August - Saint Robert, MO
  • Average humidity in August: 73%

The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are August, September and October (73%).

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Average rainfall in August
Saint Robert, MO

Average rainfall in August - Saint Robert, MO
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in August
Saint Robert, MO

Average rainfall days in August - Saint Robert, MO
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is December (7.5 days).

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Average snowfall in August
Saint Robert, MO

Average snowfall in August - Saint Robert, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Saint Robert, MO

Average snowfall days in August - Saint Robert, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Saint Robert, MO

Average daylight in August / Average sunshine in August - Saint Robert, 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 month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).

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Average sunshine days in August
Saint Robert, MO

Average sunshine days in August - Saint Robert, MO
  • Average sunshine days in August: 13.5 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index in August
Saint Robert, MO

Average UV index in August - Saint Robert, 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
Saint Robert, MO

Average cloud cover in August - Saint Robert, MO
  • Average cloud cover in August: 30

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in August
Saint Robert, MO

Average visibility in August - Saint Robert, MO
  • Average visibility in August: 6mi

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

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Saint Robert, Missouri, USA

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