August weather forecast
Three Rivers, OR

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Weather in August

The last month of the summer, August, is another warm month in Three Rivers, Oregon, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 78.3°F (25.7°C).

Temperature

The shift to August signals an average high-temperature of a still warm 78.3°F (25.7°C), subtly varied from July's 79.3°F (26.3°C). Throughout the month of August, Three Rivers observes a dramatic downturn from the daytime peak temperatures, expecting an average low of 51.8°F (11°C).

Humidity

In August, the average relative humidity is 47%.

Rainfall

In Three Rivers, during August, the rain falls for 2.8 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, in Three Rivers, there are 42.7 rainfall days, and 4.8" (122mm) of precipitation is accumulated.

Snowfall

In Three Rivers, Oregon, snow does not fall in July and August.

Daylight

In Three Rivers, the average length of the day in August is 13h and 56min.
On the first day of August in Three Rivers, Oregon, sunrise is at 5:55 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:42 pm PDT.

Sunshine

The average sunshine in August in Three Rivers is 11.9h.

UV index

In August, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 4 in August translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What is the temperature in August in Three Rivers?

An average high-temperature, in August, in Three Rivers, is 78.3°F (25.7°C) and the average low-temperature is 51.8°F (11°C).

What is the average humidity in August in Three Rivers?

In Three Rivers, the average relative humidity in August is 47%.

How many days does it rain in August in Three Rivers?

In Three Rivers, Oregon, in August, during 2.8 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

When it does not snow in Three Rivers?

July and August are months without snowfall in Three Rivers.

Does it snow in Three Rivers in August?

In Three Rivers, Oregon, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August in Three Rivers?

In Three Rivers, the average day length in August is 13h and 56min.

When is the sunrise / sunset in August in Three Rivers?

On the first day of August, sunrise is at 5:55 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:42 pm PDT.

How long on average sun shines in August in Three Rivers?

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

What is the UV index reading in August in Three Rivers?

The average daily maximum UV index in August in Three Rivers is 4. A UV Index reading of 3 to 5 represents a medium health risk 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
Three Rivers, OR

Average temperature in August - Three Rivers, OR
  • Average high temperature in August: 78.3°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (34.5°F).

  • Average low temperature in August: 51.8°F

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (23.7°F).

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Average pressure in August
Three Rivers, OR

Average pressure in August - Three Rivers, OR
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

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Average wind speed in August
Three Rivers, OR

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

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in August
Three Rivers, OR

Average humidity in August - Three Rivers, OR
  • Average humidity in August: 47%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (46%).

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Average rainfall in August
Three Rivers, OR

Average rainfall in August - Three Rivers, OR
  • Average rainfall in August: 0.2"

The wettest month (with the highest rainfall) is February (0.71").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in August
Three Rivers, OR

Average rainfall days in August - Three Rivers, OR
  • Average rainfall days in August: 2.8 days

The month with the highest number of rainy days is May (5.5 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in August
Three Rivers, OR

Average snowfall in August - Three Rivers, OR
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.61").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Three Rivers, OR

Average snowfall days in August - Three Rivers, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (7.4 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in August /
Average sunshine in August
Three Rivers, OR

Average daylight in August / Average sunshine in August - Three Rivers, OR
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in August
Three Rivers, OR

Average sunshine days in August - Three Rivers, OR
  • Average sunshine days in August: 25 days

The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is February (20.6 days).

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Average UV index in August
Three Rivers, OR

Average UV index in August - Three Rivers, OR
  • Average UV index in August: 4

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

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Average cloud cover in August
Three Rivers, OR

Average cloud cover in August - Three Rivers, OR
  • Average cloud cover in August: 9

The month with the most cloud cover is December (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in August
Three Rivers, OR

Average visibility in August - Three Rivers, OR
  • Average visibility in August: 6mi

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

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Three Rivers, Oregon, USA

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