August weather forecast
Mountain Grove, MO

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Weather in August

August, the last month of the summer in Mountain Grove, is another tropical month, with an average temperature fluctuating between 86.5°F (30.3°C) and 66°F (18.9°C).

Temperature

The transition into August reveals an average high-temperature of a still hot 86.5°F (30.3°C), mirroring a close resemblance to July. During August, Mountain Grove witnesses a consistent average low-temperature of 66°F (18.9°C).

Heat index

For most parts of August, the heat index is calculated to be a sweltering 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

August through October, with an average relative humidity of 74%, are the least humid months.

Rainfall

In Mountain Grove, in August, during 16.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Mountain Grove, during the entire year, the rain falls for 154.1 days and collects up to 32.83" (834mm) of precipitation.

Snowfall

In Mountain Grove, snow does not fall in June through October.

Daylight

In August, the average length of the day is 13h and 32min.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:16 pm. On the last day of August, in Mountain Grove, sunrise is at 6:39 am and sunset at 7:38 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Mountain Grove. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Mountain Grove in August?

The high-temperature during August is 86.5°F (30.3°C) and the low-temperature is 66°F (18.9°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 98.6°F (37°C).

What are the least humid months in Mountain Grove?

The months with the lowest humidity in Mountain Grove are August through October, with an average relative humidity of 74%.

What is the average humidity in August in Mountain Grove?

The average relative humidity in August in Mountain Grove is 74%.

How much does it rain in Mountain Grove in August?

In Mountain Grove, Missouri, during August, the rain falls for 16.5 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow in Mountain Grove?

June through October are months without snowfall in Mountain Grove, Missouri.

How many hours of daylight does Mountain Grove have in August?

In August, the average day length in Mountain Grove, Missouri, is 13h and 32min.

When are sunrise and sunset in August in Mountain Grove?

On the first day of August, sunrise is at 6:14 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:38 pm CDT.

How many hours of sunshine does Mountain Grove have in August?

In Mountain Grove, the average sunshine duration in August is 10.3h.

What are the months with the highest UV index in Mountain Grove?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Mountain Grove, Missouri.

What is the UV index intensity in August in Mountain Grove?

The average daily maximum UV index in August in Mountain Grove is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Mountain Grove, MO

Average temperature in August - Mountain Grove, MO
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.8°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in August
Mountain Grove, MO

Average pressure in August - Mountain Grove, 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).

Average wind speed in August
Mountain Grove, MO

Average wind speed in August - Mountain Grove, MO
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

Average humidity in August
Mountain Grove, MO

Average humidity in August - Mountain Grove, MO
  • Average humidity in August: 74%

The months with the highest relative humidity are March and May (79%).
The months with the lowest relative humidity are August, September and October (74%).

Average rainfall in August
Mountain Grove, MO

Average rainfall in August - Mountain Grove, MO
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is February (1.77").

Average rainfall days in August
Mountain Grove, MO

Average rainfall days in August - Mountain Grove, MO
  • Average rainfall days in August: 16.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in August
Mountain Grove, MO

Average snowfall in August - Mountain Grove, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Mountain Grove, MO

Average snowfall days in August - Mountain Grove, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Mountain Grove, MO

Average daylight in August / Average sunshine in August - Mountain Grove, MO
  • Average daylight in August: 13h and 3min

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 42min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in August
Mountain Grove, MO

Average sunshine days in August - Mountain Grove, MO
  • Average sunshine days in August: 11.5 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is August (11.5 days).

Average UV index in August
Mountain Grove, MO

Average UV index in August - Mountain Grove, 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
Mountain Grove, MO

Average cloud cover in August - Mountain Grove, MO
  • Average cloud cover in August: 30

The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 30).

Average visibility in August
Mountain Grove, MO

Average visibility in August - Mountain Grove, MO
  • Average visibility in August: 6mi

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

Mountain Grove, Missouri, USA

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