August weather forecast
Portland, OH

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Weather in August

August, the last month of the summer in Portland, is another warm month, with temperature in the range of an average high of 84.9°F (29.4°C) and an average low of 62.4°F (16.9°C).

Temperature

Portland's shift from July to August is accompanied by an average high-temperature of a moderately hot 84.9°F (29.4°C), a slight deviation from 86°F (30°C). August nights present a sharp contrast to daytime highs, with average temperatures of 62.4°F (16.9°C).

Heat index

During August, the heat index is appraised at a very hot 95°F (35°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

With an average relative humidity of 75%, August is the least humid month in Portland.

Rainfall

In Portland, during August, the rain falls for 15.6 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Portland, Ohio, during the entire year, the rain falls for 178.2 days and collects up to 35.35" (898mm) of precipitation.

Snowfall

In Portland, snow does not fall in June through September.

Daylight

In Portland, the average length of the day in August is 13h and 39min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:38 pm. On the last day of August, in Portland, sunrise is at 6:55 am and sunset at 7:58 pm EDT.

Sunshine

The month with the most sunshine in Portland is August, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index in Portland, Ohio, are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 6 in August translates into these instructions:
Ward off overexposure. Defence against solar harm is crucial. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

How hot is it in Portland in August?

During August, Portland experiences an average high-temperature of 84.9°F (29.4°C) and a low-temperature of 62.4°F (16.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 95°F (35°C).

What is the least humid month in Portland?

August is the least humid month in Portland, Ohio, with an average relative humidity of 75%.

What is the average humidity in August in Portland?

In Portland, Ohio, the average relative humidity in August is 75%.

How much does it rain in Portland in August?

In Portland, during August, the rain falls for 15.6 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Portland?

In Portland, Ohio, snow does not fall in June through September.

How many hours of daylight does Portland have in August?

The average day length in August in Portland is 13h and 39min.

What time are sunrise and sunset in August in Portland?

On the first day of August, sunrise is at 6:28 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 7:58 pm EDT.

What month has the most sunshine in Portland?

With an average of 10.3h of sunshine, August has the most sunshine of the year in Portland.

How many hours of sunshine does Portland have in August?

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

What are the months with the highest UV index in Portland?

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

How high is the UV index in August in Portland?

In August, the average daily maximum UV index in Portland, Ohio, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Portland, OH

Average temperature in August - Portland, OH
  • Average high temperature in August: 84.9°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in August: 62.4°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Portland, OH

Average pressure in August - Portland, OH
  • Average pressure in August: 30.01"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).

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Average wind speed in August
Portland, OH

Average wind speed in August - Portland, OH
  • Average wind speed in August: 4.3mph

The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in August
Portland, OH

Average humidity in August - Portland, OH
  • Average humidity in August: 75%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (75%).

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Average rainfall in August
Portland, OH

Average rainfall in August - Portland, OH
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in August
Portland, OH

Average rainfall days in August - Portland, OH
  • Average rainfall days in August: 15.6 days

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (10.8 days).

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Average snowfall in August
Portland, OH

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

The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Portland, OH

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

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Portland, OH

Average daylight in August / Average sunshine in August - Portland, 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 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in August
Portland, OH

Average sunshine days in August - Portland, OH
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are February and May (9.5 days).

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Average UV index in August
Portland, OH

Average UV index in August - Portland, OH
  • 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).

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Average cloud cover in August
Portland, OH

Average cloud cover in August - Portland, OH
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in August
Portland, OH

Average visibility in August - Portland, 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).

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Portland, Ohio, USA

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