August weather forecast
Coulee City, WA

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Weather in August

August, the last month of the summer in Coulee City, is also a moderately hot month, with an average temperature varying between 61.3°F (16.3°C) and 84.2°F (29°C).

Temperature

With the arrival of August, Coulee City's average high-temperature registers at a still warm 84.2°F (29°C), indicating a subtle variation from the previous month. Despite considerable daily temperature swings, a steady low-temperature average of 61.3°F (16.3°C) is noted throughout August.

Humidity

August is the least humid month, with an average relative humidity of 36%.

Rainfall

The months with the least rainfall are July and August Rain falls for 3.2 days and accumulates 0.2" (5mm) of rain.

Snowfall

May through August are months without snowfall.

Daylight

In Coulee City, the average length of the day in August is 14h and 13min.
On the first day of August, sunrise is at 5:35 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:38 pm PDT.

Sunshine

The month with the most sunshine is August, with an average of 12.1h of sunshine.

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 unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 5 in August transforms into this advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

During August, Coulee City experiences an average high-temperature of 84.2°F (29°C) and a low-temperature of 61.3°F (16.3°C).

What is the least humid month?

With an average relative humidity of 36%, August is the least humid month.

What is the average humidity in August?

In Coulee City, the average relative humidity in August is 36%.

What is the driest month?

The months with the least rainfall are July and August Rain falls for 3.2 days and accumulates 0.2" (5mm) of rain.

How much does it rain in August?

In Coulee City, Washington, in August, during 3.2 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

When it does not snow?

In Coulee City, snow does not fall in May through August.

Does it snow in August?

In Coulee City, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

In August, the average day length is 14h and 13min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:35 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:38 pm PDT.

What month has the most sunshine?

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

How many hours of sunshine does Coulee City have in August?

In Coulee City, the average sunshine duration in August is 12.1h.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Coulee City, WA

Average temperature in August - Coulee City, WA
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).

Average pressure in August
Coulee City, WA

Average pressure in August - Coulee City, WA
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in August
Coulee City, WA

Average wind speed in August - Coulee City, WA
  • Average wind speed in August: 5.7mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).

Average humidity in August
Coulee City, WA

Average humidity in August - Coulee City, WA
  • Average humidity in August: 36%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).

Average rainfall in August
Coulee City, WA

Average rainfall in August - Coulee City, WA
  • Average rainfall in August: 0.2"

The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").

Average rainfall days in August
Coulee City, WA

Average rainfall days in August - Coulee City, WA
  • Average rainfall days in August: 3.2 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).

Average snowfall in August
Coulee City, WA

Average snowfall in August - Coulee City, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in August
Coulee City, WA

Average snowfall days in August - Coulee City, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Coulee City, WA

Average daylight in August / Average sunshine in August - Coulee City, WA
  • Average daylight in August: 14h and 1min

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

  • 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 6min).

Average sunshine days in August
Coulee City, WA

Average sunshine days in August - Coulee City, WA
  • Average sunshine days in August: 25.8 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).

Average UV index in August
Coulee City, WA

Average UV index in August - Coulee City, WA
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in August
Coulee City, WA

Average cloud cover in August - Coulee City, WA
  • Average cloud cover in August: 12

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in August
Coulee City, WA

Average visibility in August - Coulee City, WA
  • Average visibility in August: 6mi

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

Coulee City, Washington, USA

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