August weather forecast
Oak Grove, OR

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Weather in August

August, the last month of the summer in Oak Grove, is another warm month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 81.7°F (27.6°C).

Temperature

In Oak Grove, the peak average temperatures are observed in August, with a high of 81.7°F (27.6°C) and a low of 54.5°F (12.5°C).

Heat index

August's average heat index is estimated at 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

With an average relative humidity of 63%, August is the least humid month.

Rainfall

In Oak Grove, during August, the rain falls for 5 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, in Oak Grove, there are 172.2 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in August is 14h and 2min.
On the first day of August, sunrise is at 5:55 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:49 pm PDT.

Sunshine

With an average of 11h of sunshine, August has the most sunshine of the year.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

What month is the hottest?

In Oak Grove, August is known for its average highest temperatures, reaching a high of 81.7°F (27.6°C) and a low of 54.5°F (12.5°C).

What is the usual temperature for Oak Grove in August?

An average high-temperature, in August, in Oak Grove, is 81.7°F (27.6°C) and the average low-temperature is 54.5°F (12.5°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 84.2°F (29°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 63%.

What is the average humidity in August?

The average relative humidity in August is 63%.

How many days does it rain in August?

In Oak Grove, in August, during 5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

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

The average day length in August is 14h and 2min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:55 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:49 pm PDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 11h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 11h.

What is the UV index intensity in August?

In Oak Grove, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Oak Grove, OR

Average temperature in August - Oak Grove, OR
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in August: 54.5°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

Average pressure in August
Oak Grove, OR

Average pressure in August - Oak Grove, OR
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

Average wind speed in August
Oak Grove, OR

Average wind speed in August - Oak Grove, OR
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

Average humidity in August
Oak Grove, OR

Average humidity in August - Oak Grove, OR
  • Average humidity in August: 63%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).

Average rainfall in August
Oak Grove, OR

Average rainfall in August - Oak Grove, OR
  • Average rainfall in August: 0.35"

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in August
Oak Grove, OR

Average rainfall days in August - Oak Grove, OR
  • Average rainfall days in August: 5 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).

Average snowfall in August
Oak Grove, OR

Average snowfall in August - Oak Grove, OR
  • Average snowfall in August: 0"

The month with the highest snowfall is March (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Oak Grove, OR

Average snowfall days in August - Oak Grove, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Oak Grove, OR

Average daylight in August / Average sunshine in August - Oak Grove, OR
  • Average daylight in August: 14h and 0min

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 0min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in August
Oak Grove, OR

Average sunshine days in August - Oak Grove, OR
  • Average sunshine days in August: 23.8 days

The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).

Average UV index in August
Oak Grove, OR

Average UV index in August - Oak Grove, 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).

Average cloud cover in August
Oak Grove, OR

Average cloud cover in August - Oak Grove, OR
  • Average cloud cover in August: 22

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in August
Oak Grove, OR

Average visibility in August - Oak Grove, OR
  • Average visibility in August: 6mi

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

Oak Grove, Oregon, USA

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