August weather forecast
Marietta, OH

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Weather in August

The last month of the summer, August, is also a moderately hot month in Marietta, Ohio, with an average temperature ranging between min 61.3°F (16.3°C) and max 84.2°F (29°C).

Temperature

As Marietta transitions from July to August, the average high-temperatures adjust to a still moderately hot 84.2°F (29°C), nearly the same as the previous 85.6°F (29.8°C). Marietta observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 61.3°F (16.3°C) throughout the month of August.

Heat index

The heat index value during August is appraised at a tropical 93.2°F (34°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

June through August, with an average relative humidity of 76%, are the least humid months.

Rainfall

In Marietta, in August, it is raining for 14 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 156.1 rainfall days, and 24.8" (630mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Marietta.

Daylight

In August, the average length of the day is 13h and 40min.
On the first day of the month, sunrise is at 6:26 am and sunset at 8:37 pm. On the last day of August, in Marietta, sunrise is at 6:54 am and sunset at 7:57 pm EDT.

Sunshine

August has the most sunshine of the year, with an average of 10.1h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, a daily UV index of 6 turns into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The high-temperature, in August, in Marietta, records 84.2°F (29°C), while the low-temperature is 61.3°F (16.3°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 93.2°F (34°C).

What is the least humid month?

The months with the lowest humidity are June through August, with an average relative humidity of 76%.

What is the average humidity in August?

The average relative humidity in August is 76%.

How much does it rain in August?

In Marietta, in August, during 14 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in August?

The average day length in August is 13h and 40min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:26 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:57 pm EDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.1h of sunshine.

How many hours of sunshine does Marietta have in August?

In Marietta, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Marietta, OH

Average temperature in August - Marietta, OH
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in August
Marietta, OH

Average pressure in August - Marietta, OH
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
Marietta, OH

Average wind speed in August - Marietta, OH
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in August
Marietta, OH

Average humidity in August - Marietta, OH
  • Average humidity in August: 76%

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).

Average rainfall in August
Marietta, OH

Average rainfall in August - Marietta, OH
  • Average rainfall in August: 1.73"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in August
Marietta, OH

Average rainfall days in August - Marietta, OH
  • Average rainfall days in August: 14 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).

Average snowfall in August
Marietta, OH

Average snowfall in August - Marietta, OH
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Marietta, OH

Average snowfall days in August - Marietta, OH
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.5 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
Marietta, OH

Average daylight in August / Average sunshine in August - Marietta, OH
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in August
Marietta, OH

Average sunshine days in August - Marietta, OH
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in August
Marietta, OH

Average UV index in August - Marietta, OH
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Marietta, OH

Average cloud cover in August - Marietta, OH
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Marietta, OH

Average visibility in August - Marietta, OH
  • Average visibility in August: 5mi

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

Marietta, Ohio, USA

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