August weather forecast
Spokane, WA

Rocks and cliffs around the scenic Spokane Falls in Washington, leading to the vast Spokane River and a view of the high bridge out front
Rocks and cliffs around the scenic Spokane Falls in Washington, leading to the vast Spokane River and a view of the high bridge out front

Weather in August

August, the last month of the summer in Spokane, is another warm month, with an average temperature fluctuating between 83.7°F (28.7°C) and 59°F (15°C).

Temperature

July and August, with an average high-temperature of 83.7°F (28.7°C), are the warmest months.

Humidity

With an average relative humidity of 38%, August is the least humid month in Spokane.

Rainfall

August is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.35" (9mm) of precipitation.

Snowfall

In Spokane, snow does not fall in June through August.

Daylight

The average length of the day in August in Spokane is 14h and 13min.
On the first day of the month, sunrise is at 5:27 am and sunset at 8:24 pm. On the last day of August, in Spokane, sunrise is at 6:07 am and sunset at 7:32 pm PDT.

Sunshine

With an average of 12h of sunshine, August has the most sunshine of the year.

UV index

In Spokane, Washington, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 5 in August interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Spokane?

July and August, with an average high-temperature of 83.7°F (28.7°C), are warmest months.

What is the temperature in August in Spokane?

In August, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 59°F (15°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is calculated to be 82.4°F (28°C).

What is the least humid month in Spokane?

August is the least humid month, with an average relative humidity of 38%.

What is the average humidity in August in Spokane?

The average relative humidity in August in Spokane, Washington, is 38%.

What is the driest month in Spokane?

The month with the least rainfall in Spokane, Washington, is August, when the rain falls for 5.8 days and typically collects 0.35" (9mm) of precipitation.

How much does it rain in Spokane in August?

In Spokane, in August, it is raining for 5.8 days, with typically 0.35" (9mm) of accumulated precipitation.

When it does not snow in Spokane?

In Spokane, Washington, snow does not fall in June through August.

Does it snow in Spokane in August?

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

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

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

When are sunrise and sunset in August in Spokane?

In August, on the first day of the month, sunrise is at 5:27 am and sunset at 8:24 pm. On the last day of the month, in Spokane, Washington, sunrise is at 6:07 am and sunset at 7:32 pm PDT.

What month has the most sunshine in Spokane?

The month with the most sunshine in Spokane is August, with an average of 12h of sunshine.

How many hours of sunshine does Spokane have in August?

In August, the average sunshine duration in Spokane is 12h.

What is the UV index intensity in August in Spokane?

The average daily maximum UV index in August in Spokane, Washington, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Spokane, WA

Average temperature in August - Spokane, WA
  • Average high temperature in August: 83.7°F

The warmest months (with the highest average high temperature) are July and August (83.7°F).
The month with the lowest average high temperature is December (32.2°F).

  • Average low temperature in August: 59°F

The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).

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Average pressure in August
Spokane, WA

Average pressure in August - Spokane, WA
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).

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Average wind speed in August
Spokane, WA

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

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in August
Spokane, WA

Average humidity in August - Spokane, WA
  • Average humidity in August: 38%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in August
Spokane, WA

Average rainfall in August - Spokane, WA
  • Average rainfall in August: 0.35"

The wettest month (with the highest rainfall) is March (2.13").
The driest month (with the least rainfall) is August (0.35").

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Average rainfall days in August
Spokane, WA

Average rainfall days in August - Spokane, WA
  • Average rainfall days in August: 5.8 days

The month with the highest number of rainy days is April (16.3 days).
The month with the least rainy days is July (4.9 days).

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Average snowfall in August
Spokane, WA

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

The month with the highest snowfall is January (10.39").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Spokane, WA

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

The month with the highest number of snowfall days is December (15.6 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
Spokane, WA

Average daylight in August / Average sunshine in August - Spokane, WA
  • Average daylight in August: 14h and 13min

The month with the longest days is June (Average daylight: 15h and 56min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

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Average sunshine days in August
Spokane, WA

Average sunshine days in August - Spokane, WA
  • Average sunshine days in August: 22.3 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is March (9.8 days).

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Average UV index in August
Spokane, WA

Average UV index in August - Spokane, WA
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in August
Spokane, WA

Average cloud cover in August - Spokane, WA
  • Average cloud cover in August: 13

The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 13).

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Average visibility in August
Spokane, WA

Average visibility in August - Spokane, 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).

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