August weather forecast
Matthews, MO

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Weather in August

The last month of the summer, August, is another hot month in Matthews, Missouri, with an average temperature fluctuating between 67.8°F (19.9°C) and 86.5°F (30.3°C).

Temperature

August's beginning signals an average high-temperature of a still hot 86.5°F (30.3°C), barely different from July's 88°F (31.1°C). An average low-temperature of 67.8°F (19.9°C) marks the nights throughout August.

Heat index

The heat index value for August is estimated at a fiery hot 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. 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 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. 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 76%.

Rainfall

In Matthews, in August, it is raining for 15 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 158.6 rainfall days, and 38.5" (978mm) of precipitation is accumulated.

Snowfall

In Matthews, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 31min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine is 10.5h.

UV index

In Matthews, Missouri, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The average high-temperature and low-temperature during August are 86.5°F (30.3°C) and 67.8°F (19.9°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 98.6°F (37°C).

What is the average humidity in August?

The average relative humidity in August is 76%.

How much does it rain in August?

In Matthews, in August, it is raining for 15 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow?

In Matthews, snow does not fall in May through September.

What is the average length of the day in August?

In Matthews, the average day length in August is 13h and 31min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:04 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Matthews have in August?

In Matthews, the average sunshine duration in August is 10.5h.

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes 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
Matthews, MO

Average temperature in August - Matthews, 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 (41.9°F).

  • Average low temperature in August: 67.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

Average pressure in August
Matthews, MO

Average pressure in August - Matthews, 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 (29.94"Hg).

Average wind speed in August
Matthews, MO

Average wind speed in August - Matthews, MO
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in August
Matthews, MO

Average humidity in August - Matthews, MO
  • Average humidity in August: 76%

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).

Average rainfall in August
Matthews, MO

Average rainfall in August - Matthews, MO
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in August
Matthews, MO

Average rainfall days in August - Matthews, MO
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in August
Matthews, MO

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Matthews, MO

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

The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in August
Matthews, MO

Average sunshine days in August - Matthews, MO
  • Average sunshine days in August: 13.1 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in August
Matthews, MO

Average UV index in August - Matthews, 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 and December (UV index 2).

Average cloud cover in August
Matthews, MO

Average cloud cover in August - Matthews, MO
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).

Average visibility in August
Matthews, MO

Average visibility in August - Matthews, 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).

Matthews, Missouri, USA

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