August weather forecast
Crystal Lake Park, MO

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Weather in August

August, the last month of the summer in Crystal Lake Park, is another warm month, with an average temperature fluctuating between 67.1°F (19.5°C) and 85.5°F (29.7°C).

Temperature

As July turns into August, the average high-temperatures rest at a moderately hot 85.5°F (29.7°C), showing a minor variation from the prior month. An average temperature of 67.1°F (19.5°C) is recorded during the nights in August.

Heat index

For August, the heat index is evaluated at a fiery hot 95°F (35°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Crystal Lake Park, the average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 14.2 days. Throughout August, 3.31" (84mm) of precipitation is accumulated. In Crystal Lake Park, during the entire year, the rain falls for 144.8 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

In Crystal Lake Park, snow does not fall in April through October.

Daylight

The average length of the day in August in Crystal Lake Park 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 6:30 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 in August translates into this advice:
Beware of overexposure. Fair-skinned individuals risk 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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

In Crystal Lake Park, in August, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 67.1°F (19.5°C). In August, 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, is evaluated at 95°F (35°C).

What is the average humidity in August?

The average relative humidity in August is 75%.

How much does it rain in August?

In Crystal Lake Park, during August, the rain falls for 14.2 days and regularly aggregates up to 3.31" (84mm) of precipitation.

When it does not snow?

In Crystal Lake Park, snow does not fall in April through October.

What is the average length of the day in August?

The average day length in August 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, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Crystal Lake Park have in August?

In Crystal Lake Park, Missouri, the average sunshine duration in August is 10.3h.

What is the month with the highest UV index?

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

What is the UV index reading in August?

In August, the average daily maximum UV index 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
Crystal Lake Park, MO

Average temperature in August - Crystal Lake Park, MO
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 67.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in August
Crystal Lake Park, MO

Average pressure in August - Crystal Lake Park, 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 (29.92"Hg).

Average wind speed in August
Crystal Lake Park, MO

Average wind speed in August - Crystal Lake Park, MO
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in August
Crystal Lake Park, MO

Average humidity in August - Crystal Lake Park, 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 (70%).

Average rainfall in August
Crystal Lake Park, MO

Average rainfall in August - Crystal Lake Park, MO
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in August
Crystal Lake Park, MO

Average rainfall days in August - Crystal Lake Park, MO
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in August
Crystal Lake Park, MO

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

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Crystal Lake Park, MO

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

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Crystal Lake Park, MO

Average daylight in August / Average sunshine in August - Crystal Lake 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in August
Crystal Lake Park, MO

Average sunshine days in August - Crystal Lake Park, MO
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in August
Crystal Lake Park, MO

Average UV index in August - Crystal Lake Park, 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).

Average cloud cover in August
Crystal Lake Park, MO

Average cloud cover in August - Crystal Lake Park, MO
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in August
Crystal Lake Park, MO

Average visibility in August - Crystal Lake 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).

Crystal Lake Park, Missouri, USA

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