August weather forecast
Petersburg, OR

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Weather in August

The last month of the summer, August, is also a moderately hot month in Petersburg, Oregon, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 81.3°F (27.4°C).

Temperature

The advent of August denotes an average high-temperature of a still warm 81.3°F (27.4°C), subtly different from July's 81.7°F (27.6°C). In the month of August, Petersburg witnesses a marked temperature drop at night, averaging a low of 55.8°F (13.2°C).

Heat index

The heat index value during August is estimated at 82.4°F (28°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

July and August, with an average relative humidity of 51%, are the least humid months in Petersburg, Oregon.

Rainfall

In Petersburg, in August, it is raining for 3.2 days, with typically 0.28" (7mm) of accumulated precipitation. In Petersburg, during the entire year, the rain falls for 133.5 days and collects up to 16.93" (430mm) of precipitation.

Snowfall

In Petersburg, snow does not fall in April through October.

Daylight

The average length of the day in August in Petersburg is 14h and 4min.
On the first day of the month, sunrise is at 5:48 am and sunset at 8:32 pm. On the last day of August, in Petersburg, Oregon, sunrise is at 6:25 am and sunset at 7:43 pm PDT.

Sunshine

In Petersburg, the average sunshine in August is 11.9h.

UV index

In Petersburg, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 5 suggests this advice:
Make use of precautions - It is urged to ward off sun damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What are August temperatures in Petersburg?

Petersburg in August has an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 55.8°F (13.2°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 82.4°F (28°C).

What is the least humid month in Petersburg?

The months with the lowest humidity in Petersburg are July and August, with an average relative humidity of 51%.

What is the average humidity in August in Petersburg?

In August, the average relative humidity in Petersburg is 51%.

How many days does it rain in August in Petersburg?

In August, the rain falls for 3.2 days. Throughout August, 0.28" (7mm) of precipitation is accumulated.

When it does not snow in Petersburg?

In Petersburg, Oregon, snow does not fall in April through October.

What is the average length of the day in August in Petersburg?

The average day length in August in Petersburg is 14h and 4min.

When is the sunrise / sunset in August in Petersburg?

On the first day of August in Petersburg, sunrise is at 5:48 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:43 pm PDT.

How long on average sun shines in August in Petersburg?

In August, the average sunshine duration in Petersburg is 11.9h.

What is the UV index intensity in August in Petersburg?

The average daily maximum UV index in August in Petersburg is 5. A UV Index of 3 to 5 symbolizes a moderate 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
Petersburg, OR

Average temperature in August - Petersburg, OR
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (37°F).

  • Average low temperature in August: 55.8°F

The month with the highest average low temperature is August (55.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

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Average pressure in August
Petersburg, OR

Average pressure in August - Petersburg, OR
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

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Average wind speed in August
Petersburg, OR

Average wind speed in August - Petersburg, OR
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).

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Average humidity in August
Petersburg, OR

Average humidity in August - Petersburg, OR
  • Average humidity in August: 51%

The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are July and August (51%).

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Average rainfall in August
Petersburg, OR

Average rainfall in August - Petersburg, OR
  • Average rainfall in August: 0.28"

The wettest month (with the highest rainfall) is January (2.99").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in August
Petersburg, OR

Average rainfall days in August - Petersburg, OR
  • Average rainfall days in August: 3.2 days

The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (3.2 days).

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Average snowfall in August
Petersburg, OR

Average snowfall in August - Petersburg, OR
  • Average snowfall in August: 0"

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

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Average snowfall days in August
Petersburg, OR

Average snowfall days in August - Petersburg, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (4.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Petersburg, OR

Average daylight in August / Average sunshine in August - Petersburg, OR
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in August
Petersburg, OR

Average sunshine days in August - Petersburg, OR
  • Average sunshine days in August: 26.3 days

The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is March (10.6 days).

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Average UV index in August
Petersburg, OR

Average UV index in August - Petersburg, OR
  • Average UV index in August: 5

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

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Average cloud cover in August
Petersburg, OR

Average cloud cover in August - Petersburg, OR
  • Average cloud cover in August: 10

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 10).

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Average visibility in August
Petersburg, OR

Average visibility in August - Petersburg, OR
  • Average visibility in August: 6mi

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

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Petersburg, Oregon, USA

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