August weather forecast
Eugene, OR

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Bright neon lights light up the colorful city of Eugene in Oregon,
Bright neon lights light up the colorful city of Eugene in Oregon,

Weather in August

August continues the prevailing summer trend with high-reaching temperatures similar to July. However, this month brings a slight increase in rainfall, marking the end of Eugene's driest period. Nonetheless, the city remains sun-drenched with up to 11 hours of sunshine and the same extended daylight hours as observed in July. Even though the weather remains similar to the prior month, the receding temperatures and the building humidity offer a hint towards the approaching fall season.

Temperature

Eugene's August weather, with an average high temperature of 81.3°F (27.4°C) and an average low temperature of 49.6°F (9.8°C), tends to be the warmest of the year.

Heat index

In August, the average heat index is evaluated at 84.2°F (29°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
Consider that heat index readings are for situations in the shade and light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

August is the least humid month, with an average relative humidity of 68%.

Rainfall

In August, the rain falls for 2.5 days. Throughout August, 0.16" (4mm) of precipitation is accumulated. In Eugene, during the entire year, the rain falls for 109.9 days and collects up to 10.08" (256mm) of precipitation.

Snowfall

April through November are months without snowfall in Eugene, Oregon.

Daylight

In August, the average length of the day is 13h and 57min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:49 pm PDT.

Sunshine

With an average of 11h of sunshine, August has the most sunshine of the year in Eugene, Oregon.

UV index

The average daily maximum UV index in August in Eugene is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

August brings the highest temperatures, with an average high of 81.3°F (27.4°C) and an average low of 49.6°F (9.8°C).

What is the temperature in August?

In Eugene, 81.3°F (27.4°C) is the average high-temperature and 49.6°F (9.8°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 84.2°F (29°C).

What is the least humid month?

With an average relative humidity of 68%, August is the least humid month.

What is the average humidity in August?

The average relative humidity in August is 68%.

How much does it rain in August?

In Eugene, in August, during 2.5 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

When it does not snow?

April through November are months without snowfall.

What is the average length of the day in August?

In August, the average day length in Eugene is 13h and 57min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:49 pm PDT.

What month has the most sunshine?

With an average of 11h of sunshine, August has the most sunshine of the year.

How many hours of sunshine does Eugene have in August?

In August, the average sunshine duration is 11h.

What is the UV index reading in August?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk from 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
Eugene, OR

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

The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).

  • Average low temperature in August: 49.6°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).

Average pressure in August
Eugene, OR

Average pressure in August - Eugene, OR
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in August
Eugene, OR

Average wind speed in August - Eugene, OR
  • Average wind speed in August: 3.6mph

The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).

Average humidity in August
Eugene, OR

Average humidity in August - Eugene, OR
  • Average humidity in August: 68%

The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).

Average rainfall in August
Eugene, OR

Average rainfall in August - Eugene, OR
  • Average rainfall in August: 0.16"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in August
Eugene, OR

Average rainfall days in August - Eugene, OR
  • Average rainfall days in August: 2.5 days

The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).

Average snowfall in August
Eugene, OR

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

The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Eugene, OR

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

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Eugene, OR
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

Average sunshine days in August
Eugene, OR

Average sunshine days in August - Eugene, OR
  • Average sunshine days in August: 27.3 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).

Average UV index in August
Eugene, OR

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Eugene, OR

Average cloud cover in August - Eugene, OR
  • Average cloud cover in August: 23

The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in August
Eugene, OR

Average visibility in August - Eugene, OR
  • Average visibility in August: 5mi

The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).

Eugene, Oregon, USA

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