August weather forecast
Richland, OR

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Weather in August

The last month of the summer, August, is also a moderately hot month in Richland, Oregon, with an average temperature varying between 81.3°F (27.4°C) and 53.8°F (12.1°C).

Temperature

The onset of August manifests an average high-temperature of a still moderately hot 81.3°F (27.4°C), demonstrating a minor variation from the preceding month. With a significant daily temperature differential, Richland's nighttime temperature in August falls to an average of 53.8°F (12.1°C).

Heat index

The average heat index in August is calculated to be 80.6°F (27°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

With an average relative humidity of 40%, August is the least humid month.

Rainfall

The month with the least rainfall is August, when the rain falls for 4.4 days and typically collects 0.31" (8mm) of precipitation.

Snowfall

In Richland, snow does not fall in June through September.

Daylight

The average length of the day in August is 14h and 0min.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:14 pm. On the last day of August, sunrise is at 6:10 am and sunset at 7:26 pm PDT.

Sunshine

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

UV index

In Richland, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Jun 4, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Richland in August?

The high-temperature, in August, in Richland, is 81.3°F (27.4°C), while the low-temperature averages to 53.8°F (12.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 80.6°F (27°C).

What is the least humid month?

The least humid month in Richland is August, with an average relative humidity of 40%.

What is the average humidity in August?

In August, the average relative humidity is 40%.

What is the driest month?

August is the month with the least rainfall. Rain falls for 4.4 days and accumulates 0.31" (8mm) of precipitation.

How much does it rain in August?

In Richland, during August, the rain falls for 4.4 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow?

June through September are months without snowfall in Richland.

How many hours of daylight does Richland have in August?

The average day length in August is 14h and 0min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:35 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 7:26 pm PDT.

What month has the most sunshine?

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

How long on average sun shines in August in Richland?

The average sunshine duration in August is 12.1h.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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, OR

Average temperature in August - Richland, OR
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (30.7°F).

  • Average low temperature in August: 53.8°F

The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).

Average pressure in August
Richland, OR

Average pressure in August - Richland, OR
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

Average wind speed in August
Richland, OR

Average wind speed in August - Richland, OR
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (5.4mph).

Average humidity in August
Richland, OR

Average humidity in August - Richland, OR
  • Average humidity in August: 40%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (40%).

Average rainfall in August
Richland, OR

Average rainfall in August - Richland, OR
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in August
Richland, OR

Average rainfall days in August - Richland, OR
  • Average rainfall days in August: 4.4 days

The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is August (4.4 days).

Average snowfall in August
Richland, OR

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

The month with the highest snowfall is December (10.59").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Richland, OR

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

The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Richland, OR
  • Average daylight in August: 14h and 0min

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

  • 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 48min).

Average sunshine days in August
Richland, OR

Average sunshine days in August - Richland, OR
  • Average sunshine days in August: 21.9 days

The month with the most sunshine days is July (22.7 days).
The months with the least sunshine days are February and March (11.3 days).

Average UV index in August
Richland, OR

Average UV index in August - Richland, OR
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in August
Richland, OR

Average cloud cover in August - Richland, OR
  • Average cloud cover in August: 9

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 9).

Average visibility in August
Richland, OR

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

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

Richland, Oregon, USA

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