August weather forecast
Valley Park, MO

Share

Weather in August

The last month of the summer, August, is another tropical month in Valley Park, Missouri, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 67.5°F (19.7°C).

Temperature

The transition into August reveals an average high-temperature of a still tropical 86.5°F (30.3°C), mirroring a close resemblance to July. During August, the average low-temperature is a comfortable 67.5°F (19.7°C).

Heat index

August's heat index is estimated at a very hot 98.6°F (37°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in August is 73%.

Rainfall

In August, the rain falls for 13.9 days. Throughout August, 3.35" (85mm) of precipitation is accumulated. In Valley Park, during the entire year, the rain falls for 141.7 days and collects up to 32.01" (813mm) of precipitation.

Snowfall

In Valley Park, snow does not fall in April through August and October.

Daylight

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

Sunshine

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

UV index

The average daily maximum UV index in August in Valley Park is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Valley Park in August?

In August, the average high-temperature and low-temperature are 86.5°F (30.3°C) and 67.5°F (19.7°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 98.6°F (37°C).

What is the average humidity in August?

The average relative humidity in August is 73%.

How much does it rain in August?

In August, the rain falls for 13.9 days. Throughout August, 3.35" (85mm) of precipitation is accumulated.

When it does not snow?

April through August and October are months without snowfall.

Does it snow in August?

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

How many hours of daylight does Valley Park have in August?

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

When are sunrise and sunset in August?

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

How many hours of sunshine does Valley Park have in August?

In August, the average sunshine duration is 10.2h.

What is the UV index intensity in August?

In Valley Park, Missouri, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Valley Park, Missouri, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location