August weather forecast
Marthasville, MO

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Weather in August

August, the last month of the summer in Marthasville, is another tropical month, with an average temperature fluctuating between 65.8°F (18.8°C) and 87.1°F (30.6°C).

Temperature

The introduction of August sees an average high-temperature of a still hot 87.1°F (30.6°C), hardly deviating from July. August brings an average low-temperature of 65.8°F (18.8°C) to Marthasville.

Heat index

The heat index for August is appraised at a very hot 100.4°F (38°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Marthasville, the average relative humidity in August is 75%.

Rainfall

In Marthasville, in August, during 13.8 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Marthasville, during the entire year, the rain falls for 133.1 days and collects up to 27.24" (692mm) of precipitation.

Snowfall

In Marthasville, Missouri, snow does not fall in April through August and October.

Daylight

In Marthasville, the average length of the day in August is 13h and 37min.
On the first day of August, sunrise is at 6:06 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:35 pm CDT.

Sunshine

In Marthasville, the average sunshine in August is 10h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a daily UV index of 6 turns into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot does it get in Marthasville in August?

The high-temperature, in August, in Marthasville, records 87.1°F (30.6°C), while the low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 100.4°F (38°C).

What is the average humidity in August in Marthasville?

In Marthasville, the average relative humidity in August is 75%.

How much does it rain in Marthasville in August?

In Marthasville, during August, the rain falls for 13.8 days and regularly aggregates up to 3.03" (77mm) of precipitation.

When it does not snow in Marthasville?

April through August and October are months without snowfall in Marthasville.

Does it snow in Marthasville in August?

In Marthasville, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Marthasville have in August?

In August, the average day length is 13h and 37min.

When are sunrise and sunset in August in Marthasville?

On the first day of August in Marthasville, Missouri, sunrise is at 6:06 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:35 pm CDT.

How long on average sun shines in August in Marthasville?

In August, the average sunshine duration is 10h.

When is the highest UV index in Marthasville?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Marthasville, Missouri.

How high is the UV index in August in Marthasville?

In Marthasville, Missouri, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe 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
Marthasville, MO

Average temperature in August - Marthasville, MO
  • Average high temperature in August: 87.1°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 (38.1°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

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Average pressure in August
Marthasville, MO

Average pressure in August - Marthasville, MO
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Marthasville, MO

Average wind speed in August - Marthasville, MO
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Marthasville, MO

Average humidity in August - Marthasville, MO
  • Average humidity in August: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Marthasville, MO

Average rainfall in August - Marthasville, MO
  • Average rainfall in August: 3.03"

The wettest months (with the highest rainfall) are April and May (3.23").
The driest month (with the least rainfall) is February (1.42").

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Average rainfall days in August
Marthasville, MO

Average rainfall days in August - Marthasville, MO
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.2 days).

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Average snowfall in August
Marthasville, MO

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

The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in August
Marthasville, MO

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

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Marthasville, MO

Average daylight in August / Average sunshine in August - Marthasville, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in August
Marthasville, MO

Average sunshine days in August - Marthasville, MO
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.8 days).

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Average UV index in August
Marthasville, MO

Average UV index in August - Marthasville, MO
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Marthasville, MO

Average cloud cover in August - Marthasville, MO
  • Average cloud cover in August: 30

The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 30).

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Average visibility in August
Marthasville, MO

Average visibility in August - Marthasville, MO
  • Average visibility in August: 5mi

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

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Marthasville, Missouri, USA

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