August weather forecast
Valley Park, MO

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Weather in August

The last month of the summer, August, is also a hot month in Valley Park, Missouri, with an average temperature fluctuating between 86.5°F (30.3°C) and 67.5°F (19.7°C).

Temperature

The start of August marks an average high-temperature of a still hot 86.5°F (30.3°C), hardly distinguishable from the conditions in July. In Valley Park, August's nights observe an average temperature dip to a refreshing 67.5°F (19.7°C).

Heat index

In August, the average heat index is evaluated at a fiery hot 98.6°F (37°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in August in Valley Park, Missouri, is 73%.

Rainfall

In August, the rain falls for 13.9 days. Throughout August, 3.35" (85mm) of precipitation is accumulated. Throughout the year, in Valley Park, there are 141.7 rainfall days, and 32.01" (813mm) of precipitation is accumulated.

Snowfall

April through August and October are months without snowfall in Valley Park.

Daylight

In Valley Park, the average length of the day in August is 13h and 37min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:12 pm. On the last day of August, in Valley Park, Missouri, sunrise is at 6:31 am and sunset at 7:33 pm CDT.

Sunshine

The average sunshine in August in Valley Park, Missouri, is 10.2h.

UV index

The average daily maximum UV index in August in Valley Park is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

How hot is it in Valley Park in August?

The high-temperature during August is 86.5°F (30.3°C) and the low-temperature is 67.5°F (19.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 98.6°F (37°C).

What is the average humidity in August in Valley Park?

The average relative humidity in August in Valley Park is 73%.

How much does it rain in Valley Park in August?

In Valley Park, during August, the rain falls for 13.9 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in Valley Park?

April through August and October are months without snowfall in Valley Park, Missouri.

Does it snow in Valley Park in August?

In Valley Park, Missouri, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August in Valley Park?

In Valley Park, Missouri, the average day length in August is 13h and 37min.

When is the sunrise / sunset in August in Valley Park?

On the first day of August in Valley Park, sunrise is at 6:04 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:33 pm CDT.

How long on average sun shines in August in Valley Park?

In Valley Park, the average sunshine duration in August is 10.2h.

How high is the UV index in August in Valley Park?

In August, the average daily maximum UV index in Valley Park is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Valley Park, MO

Average temperature in August - Valley Park, MO
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in August
Valley Park, MO

Average pressure in August - Valley Park, 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
Valley Park, MO

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

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Valley Park, MO

Average humidity in August - Valley Park, MO
  • Average humidity in August: 73%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Valley Park, MO

Average rainfall in August - Valley Park, MO
  • Average rainfall in August: 3.35"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is February (1.54").

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Average rainfall days in August
Valley Park, MO

Average rainfall days in August - Valley Park, MO
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in August
Valley Park, MO

Average snowfall in August - Valley Park, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in August
Valley Park, MO

Average snowfall days in August - Valley Park, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are April, May, June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Valley Park, MO

Average daylight in August / Average sunshine in August - Valley Park, 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 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in August
Valley Park, MO

Average sunshine days in August - Valley Park, MO
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is December (20.1 days).
The months with the least sunshine days are May and July (12.6 days).

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Average UV index in August
Valley Park, MO

Average UV index in August - Valley Park, MO
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
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
Valley Park, MO

Average cloud cover in August - Valley Park, MO
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

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Average visibility in August
Valley Park, MO

Average visibility in August - Valley Park, 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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Valley Park, Missouri, USA

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