August weather forecast
Sumpter, OR

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Weather in August

The last month of the summer, August, is another warm month in Sumpter, Oregon, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 81.3°F (27.4°C).

Temperature

Entering August, the average high-temperature is recorded at a still warm 81.3°F (27.4°C), exhibiting a minimal shift from July's 81.7°F (27.6°C). Sumpter's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 53.8°F (12.1°C) in August.

Heat index

For August, the heat index is evaluated at 80.6°F (27°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

The least humid month in Sumpter, Oregon, is August, with an average relative humidity of 40%.

Rainfall

August is the month with the least rainfall in Sumpter. Rain falls for 4.4 days and accumulates 0.31" (8mm) of precipitation.

Snowfall

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

Daylight

In Sumpter, the average length of the day in August is 14h and 0min.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:18 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:30 pm PDT.

Sunshine

With an average of 12.1h of sunshine, August has the most sunshine of the year in Sumpter, Oregon.

UV index

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are August temperatures in Sumpter?

Sumpter in August has an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 53.8°F (12.1°C). 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, in August is evaluated at 80.6°F (27°C).

What is the least humid month in Sumpter?

With an average relative humidity of 40%, August is the least humid month in Sumpter, Oregon.

What is the average humidity in August in Sumpter?

In Sumpter, Oregon, the average relative humidity in August is 40%.

What is the driest month in Sumpter?

August is the month with the least rainfall in Sumpter, Oregon. Rain falls for 4.4 days and accumulates 0.31" (8mm) of precipitation.

How many days does it rain in August in Sumpter?

In Sumpter, during August, the rain falls for 4.4 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Sumpter?

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

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

In August, the average day length in Sumpter is 14h and 0min.

When is the sunrise / sunset in August in Sumpter?

On the first day of August in Sumpter, sunrise is at 5:39 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:30 pm PDT.

What month has the most sunshine in Sumpter?

August has the most sunshine of the year in Sumpter, with an average of 12.1h of sunshine.

How many hours of sunshine does Sumpter have in August?

The average sunshine duration in August in Sumpter is 12.1h.

What is the UV index intensity in August in Sumpter?

The average daily maximum UV index in August in Sumpter, Oregon, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from 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
Sumpter, OR

Average temperature in August - Sumpter, 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 (30.7°F).

  • Average low temperature in August: 53.8°F

The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).

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Average pressure in August
Sumpter, OR

Average pressure in August - Sumpter, OR
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in August
Sumpter, OR

Average wind speed in August - Sumpter, OR
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (5.4mph).

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Average humidity in August
Sumpter, OR

Average humidity in August - Sumpter, OR
  • Average humidity in August: 40%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in August
Sumpter, OR

Average rainfall in August - Sumpter, OR
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days in August
Sumpter, OR

Average rainfall days in August - Sumpter, OR
  • Average rainfall days in August: 4.4 days

The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is August (4.4 days).

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Average snowfall in August
Sumpter, OR

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

The month with the highest snowfall is December (10.59").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Sumpter, OR

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

The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 12h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in August
Sumpter, OR

Average sunshine days in August - Sumpter, OR
  • Average sunshine days in August: 21.9 days

The month with the most sunshine days is July (22.7 days).
The months with the least sunshine days are February and March (11.3 days).

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Average UV index in August
Sumpter, OR

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in August
Sumpter, OR

Average cloud cover in August - Sumpter, OR
  • Average cloud cover in August: 9

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in August
Sumpter, OR

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Sumpter, Oregon, USA

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