August weather forecast
Winthrop, WA

A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington
A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington

Weather in August

August, the last month of the summer in Winthrop, is another warm month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 75.9°F (24.4°C).

Temperature

The warmest month is August, with an average high-temperature of 75.9°F (24.4°C) and an average low-temperature of 47.8°F (8.8°C).

Humidity

July and August, with an average relative humidity of 53%, are the least humid months.

Rainfall

In Winthrop, Washington, it is raining for 6.1 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 142.6 rainfall days, and 17.91" (455mm) of precipitation is accumulated.

Snowfall

In Winthrop, Washington, snow does not fall in May through August.

Daylight

In August, the average length of the day is 14h and 16min.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:38 pm. On the last day of August, in Winthrop, sunrise is at 6:16 am and sunset at 7:45 pm PDT.

Sunshine

With an average of 11.9h of sunshine, August has the most sunshine of the year.

UV index

In Winthrop, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In August, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Winthrop?

August is the warmest month in Winthrop, Washington, with an average high-temperature of 75.9°F (24.4°C) and an average low-temperature of 47.8°F (8.8°C).

What is the temperature in August in Winthrop?

In August, in Winthrop, Washington, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 47.8°F (8.8°C).

What are the least humid months in Winthrop?

July and August, with an average relative humidity of 53%, are the least humid months in Winthrop, Washington.

What is the average humidity in August in Winthrop?

The average relative humidity in August in Winthrop is 53%.

How much does it rain in Winthrop in August?

In Winthrop, in August, during 6.1 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

When it does not snow in Winthrop?

In Winthrop, Washington, snow does not fall in May through August.

Does it snow in Winthrop in August?

In Winthrop, Washington, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Winthrop have in August?

The average day length in August in Winthrop is 14h and 16min.

When is the sunrise / sunset in August in Winthrop?

On the first day of August in Winthrop, Washington, sunrise is at 5:35 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:45 pm PDT.

What month has the most sunshine in Winthrop?

August has the most sunshine of the year in Winthrop, Washington, with an average of 11.9h of sunshine.

How long on average sun shines in August in Winthrop?

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

What is the UV index intensity in August in Winthrop?

The average daily maximum UV index in August in Winthrop, Washington, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Winthrop, WA

Average temperature in August - Winthrop, WA
  • Average high temperature in August: 75.9°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in August: 47.8°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).

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Average pressure in August
Winthrop, WA

Average pressure in August - Winthrop, WA
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).

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Average wind speed in August
Winthrop, WA

Average wind speed in August - Winthrop, WA
  • Average wind speed in August: 4.9mph

The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).

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Average humidity in August
Winthrop, WA

Average humidity in August - Winthrop, WA
  • Average humidity in August: 53%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in August
Winthrop, WA

Average rainfall in August - Winthrop, WA
  • Average rainfall in August: 0.43"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in August
Winthrop, WA

Average rainfall days in August - Winthrop, WA
  • Average rainfall days in August: 6.1 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in August
Winthrop, WA

Average snowfall in August - Winthrop, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in August
Winthrop, WA

Average snowfall days in August - Winthrop, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (15.3 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
Winthrop, WA

Average daylight in August / Average sunshine in August - Winthrop, WA
  • Average daylight in August: 14h and 16min

The month with the longest days is June (Average daylight: 16h and 3min).
The month with the shortest days is December (Average daylight: 8h and 23min).

  • Average sunshine in August: 11h and 54min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Winthrop, WA

Average sunshine days in August - Winthrop, WA
  • Average sunshine days in August: 23 days

The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).

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Average UV index in August
Winthrop, WA

Average UV index in August - Winthrop, WA
  • 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 and November (UV index 1).

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Average cloud cover in August
Winthrop, WA

Average cloud cover in August - Winthrop, WA
  • Average cloud cover in August: 15

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in August
Winthrop, WA

Average visibility in August - Winthrop, WA
  • Average visibility in August: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

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