August weather forecast
Cottage Grove, OR

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The white Contennial Coverd Bridge with the scenic Cottage Grove in Oregon
The white Contennial Coverd Bridge with the scenic Cottage Grove in Oregon

Weather in August

The last month of the summer, August, is also a moderately hot month in Cottage Grove, Oregon, with an average temperature varying between 48.7°F (9.3°C) and 80.1°F (26.7°C).

Temperature

The month of August sees the highest average temperatures, reaching 80.1°F (26.7°C) at the peak and 48.7°F (9.3°C) at the low.

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 70%.

Rainfall

In Cottage Grove, in August, it is raining for 3.6 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 157.8 rainfall days, and 30.63" (778mm) of precipitation is accumulated.

Snowfall

In Cottage Grove, Oregon, snow does not fall in May through October.

Daylight

In August, the average length of the day in Cottage Grove, Oregon, is 13h and 56min.
On the first day of the month, sunrise is at 6:01 am and sunset at 8:35 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:48 pm PDT.

Sunshine

With an average of 11.1h of sunshine, August has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 5 during August morphs into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What is the warmest month in Cottage Grove?

The warmest period in Cottage Grove, Oregon, tends to be August, when average temperatures fluctuate between a high of 80.1°F (26.7°C) and a low of 48.7°F (9.3°C).

What is the average August temperature in Cottage Grove?

An average high-temperature, in August, in Cottage Grove, is 80.1°F (26.7°C) and the average low-temperature is 48.7°F (9.3°C).

What are the least humid months in Cottage Grove?

The months with the lowest humidity in Cottage Grove, Oregon, are July and August, with an average relative humidity of 70%.

What is the average humidity in August in Cottage Grove?

The average relative humidity in August in Cottage Grove is 70%.

How many days does it rain in August in Cottage Grove?

In August, in Cottage Grove, Oregon, the rain falls for 3.6 days. Throughout August, 0.35" (9mm) of precipitation is accumulated.

When it does not snow in Cottage Grove?

In Cottage Grove, Oregon, snow does not fall in May through October.

What is the average length of the day in August in Cottage Grove?

In Cottage Grove, the average day length in August is 13h and 56min.

When are sunrise and sunset in August in Cottage Grove?

On the first day of August in Cottage Grove, sunrise is at 6:01 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:48 pm PDT.

What month has the most sunshine in Cottage Grove?

August has the most sunshine of the year in Cottage Grove, with an average of 11.1h of sunshine.

How many hours of sunshine does Cottage Grove have in August?

The average sunshine duration in August in Cottage Grove, Oregon, is 11.1h.

What is the month with the highest UV index in Cottage Grove?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Cottage Grove, Oregon.

What is the UV index intensity in August in Cottage Grove?

In Cottage Grove, Oregon, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes 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
Cottage Grove, OR

Average temperature in August - Cottage Grove, OR
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is August (80.1°F).
The month with the lowest average high temperature is December (45.9°F).

  • Average low temperature in August: 48.7°F

The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).

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Average pressure in August
Cottage Grove, OR

Average pressure in August - Cottage 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).

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Average wind speed in August
Cottage Grove, OR

Average wind speed in August - Cottage Grove, OR
  • Average wind speed in August: 3.4mph

The windiest month (with the highest average wind speed) is January (4.5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

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Average humidity in August
Cottage Grove, OR

Average humidity in August - Cottage Grove, OR
  • Average humidity in August: 70%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (70%).

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Average rainfall in August
Cottage Grove, OR

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

The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in August
Cottage Grove, OR

Average rainfall days in August - Cottage Grove, OR
  • Average rainfall days in August: 3.6 days

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (3.6 days).

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Average snowfall in August
Cottage Grove, OR

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

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Cottage Grove, OR

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

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Cottage Grove, 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 1min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 12min).

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Average sunshine days in August
Cottage Grove, OR

Average sunshine days in August - Cottage Grove, OR
  • Average sunshine days in August: 25.4 days

The month with the most sunshine days is July (25.8 days).
The months with the least sunshine days are February and March (9.3 days).

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Average UV index in August
Cottage Grove, OR

Average UV index in August - Cottage Grove, OR
  • Average UV index in August: 5

The months with the highest UV index are June, July and August (UV index 5).
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
Cottage Grove, OR

Average cloud cover in August - Cottage Grove, OR
  • Average cloud cover in August: 23

The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in August
Cottage Grove, OR

Average visibility in August - Cottage Grove, OR
  • Average visibility in August: 5mi

The months with the highest visibility are July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (4mi).

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Cottage Grove, Oregon, USA

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