August weather forecast
Lebanon, OR

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Weather in August

August continues to showcase the peak summer weather in Lebanon. The average high temperature rises slightly, registering a pinnacle at 81.1°F (27.3°C). Although the moisture content increases slightly with an increment to 0.31" (8mm) of rainfall, the weather remains predominantly dry and hot. The increased evaporation causes a slight decline in relative humidity indicating drier atmospheric conditions. Hence, Lebanon sustains its hot and arid summer landscape well into August.

Temperature

August is the warmest month of the year, registering average temperatures as high as 81.1°F (27.3°C) and as low as 51.8°F (11°C).

Heat index

August's heat index is calculated to be 84.2°F (29°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

With an average relative humidity of 66%, August is the least humid month.

Rainfall

In August, in Lebanon, the rain falls for 3.8 days. Throughout August, 0.31" (8mm) of precipitation is accumulated. In Lebanon, during the entire year, the rain falls for 163.3 days and collects up to 29.92" (760mm) of precipitation.

Snowfall

In Lebanon, snow does not fall in April through October.

Daylight

The average length of the day in August is 13h and 59min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:36 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:49 pm PDT.

Sunshine

The month with the most sunshine is August, with an average of 11.2h of sunshine.

UV index

In Lebanon, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 5 during August translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What time of the year is the hottest in Lebanon?

August, marked by an average high-temperature of 81.1°F (27.3°C) and a low-temperature of 51.8°F (11°C), is the warmest month.

What are the temperatures in August?

The average high-temperature, in August, in Lebanon, is 81.1°F (27.3°C), while the average low-temperature is 51.8°F (11°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 84.2°F (29°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 66%.

What is the average humidity in August?

In Lebanon, the average relative humidity in August is 66%.

How many days does it rain in August?

In Lebanon, in August, it is raining for 3.8 days, with typically 0.31" (8mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in August?

In August, the average day length is 13h and 59min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:59 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:49 pm PDT.

What month has the most sunshine?

With an average of 11.2h of sunshine, August has the most sunshine of the year.

How long on average sun shines in August?

The average sunshine duration in August is 11.2h.

What is the UV index reading in August?

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Lebanon, OR

Average temperature in August - Lebanon, OR
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.3°F).

  • Average low temperature in August: 51.8°F

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

Average pressure in August
Lebanon, OR

Average pressure in August - Lebanon, 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
Lebanon, OR

Average wind speed in August - Lebanon, OR
  • Average wind speed in August: 3.9mph

The windiest months (with the highest average wind speed) are January and March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in August
Lebanon, OR

Average humidity in August - Lebanon, OR
  • Average humidity in August: 66%

The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (66%).

Average rainfall in August
Lebanon, OR

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

The wettest month (with the highest rainfall) is December (4.41").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days in August
Lebanon, OR

Average rainfall days in August - Lebanon, OR
  • Average rainfall days in August: 3.8 days

The month with the highest number of rainy days is March (20.1 days).
The months with the least rainy days are July and August (3.8 days).

Average snowfall in August
Lebanon, OR

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

The month with the highest snowfall is February (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Lebanon, OR

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

The month with the highest number of snowfall days is February (2.5 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
Lebanon, OR

Average daylight in August / Average sunshine in August - Lebanon, 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: 11h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in August
Lebanon, OR

Average sunshine days in August - Lebanon, OR
  • Average sunshine days in August: 25.3 days

The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is March (9.1 days).

Average UV index in August
Lebanon, OR

Average UV index in August - Lebanon, 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
Lebanon, OR

Average cloud cover in August - Lebanon, OR
  • Average cloud cover in August: 20

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in August
Lebanon, OR

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

The months with the highest visibility are July, August and September (6mi).
The month with the lowest visibility is February (4mi).

Lebanon, Oregon, USA

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