August weather forecast
Richland, WA

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Weather in August

August continues the summer trend in Richland, with temperatures slightly falling from July but remaining relatively high. Inhabitants brace themselves for many sunny, hot days ahead. The weather conditions are characterized by minimal rainfall and clear skies. Despite the consistently high temperature, an occasional gust of wind provides much-needed relief. The month ends on a note of gradually declining daylight hours, indicating the approaching fall seasons.

Temperature

Richland's August showcases an average high-temperature of a still hot 89.4°F (31.9°C), hardly distinct from July's 90.1°F (32.3°C). Richland experiences a significant downturn from peak daytime temperatures throughout August, with the average low-temperature dipping to a refreshing 64.2°F (17.9°C).

Humidity

In Richland, Washington, the average relative humidity in August is 36%.

Rainfall

In Richland, Washington, in August, during 4.3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Richland, during the entire year, the rain falls for 100.2 days and collects up to 7.05" (179mm) of precipitation.

Snowfall

In Richland, Washington, snow does not fall in April through October.

Daylight

In Richland, Washington, the average length of the day in August is 14h and 7min.
On the first day of August, sunrise is at 5:39 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:37 pm PDT.

Sunshine

The average sunshine in August in Richland is 12h.

UV index

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

How hot is August in Richland?

An average high-temperature, in August, in Richland, is 89.4°F (31.9°C) and the average low-temperature is 64.2°F (17.9°C).

What is the average humidity in August in Richland?

The average relative humidity in August in Richland, Washington, is 36%.

How much does it rain in Richland in August?

In Richland, Washington, in August, during 4.3 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

When it does not snow in Richland?

In Richland, Washington, snow does not fall in April through October.

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

In Richland, Washington, the average day length in August is 14h and 7min.

When are sunrise and sunset in August in Richland?

In August, on the first day of the month, sunrise is at 5:39 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:37 pm PDT.

How many hours of sunshine does Richland have in August?

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

How high is the UV index in August in Richland?

The average daily maximum UV index in August in Richland, Washington, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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
Richland, WA

Average temperature in August - Richland, WA
  • Average high temperature in August: 89.4°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.1°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (27.5°F).

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Average pressure in August
Richland, WA

Average pressure in August - Richland, 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).

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Average wind speed in August
Richland, WA

Average wind speed in August - Richland, WA
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).

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Average humidity in August
Richland, WA

Average humidity in August - Richland, WA
  • Average humidity in August: 36%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is July (35%).

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Average rainfall in August
Richland, WA

Average rainfall in August - Richland, WA
  • Average rainfall in August: 0.28"

The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and September (0.2").

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Average rainfall days in August
Richland, WA

Average rainfall days in August - Richland, WA
  • Average rainfall days in August: 4.3 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (3.5 days).

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Average snowfall in August
Richland, WA

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

The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Richland, WA

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

The month with the highest number of snowfall days is December (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Richland, WA

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

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in August
Richland, WA

Average sunshine days in August - Richland, WA
  • Average sunshine days in August: 24.1 days

The month with the most sunshine days is July (25.7 days).
The months with the least sunshine days are February and March (15.3 days).

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Average UV index in August
Richland, WA

Average UV index in August - Richland, WA
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
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
Richland, WA

Average cloud cover in August - Richland, WA
  • Average cloud cover in August: 10

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in August
Richland, WA

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

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

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Richland, Washington, USA

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