Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The average temperatures reach their apex in August, averaging 81°F (27.2°C) at the high end and 54°F (12.2°C) at the low end.Heat index
In August, the average heat index is computed to be 84.2°F (29°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
August is the least humid month, with an average relative humidity of 65%.Rainfall
The months with the least rainfall are July and August Rain falls for 4.4 days and accumulates 0.31" (8mm) of rain.Snowfall
In Wilsonville, snow does not fall in April through October.Daylight
In Wilsonville, the average length of the day in August is 14h and 2min.On the first day of August in Wilsonville, sunrise is at 5:56 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:49 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 11.1h of sunshine.UV index
In August, the average daily maximum UV index in Wilsonville is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the maximum UV index of 5 suggests this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What time of the year is the hottest in Wilsonville?
What is the usual temperature for Wilsonville in August?
What is the least humid month in Wilsonville?
What is the average humidity in August in Wilsonville?
What is the driest month in Wilsonville?
How many days does it rain in August in Wilsonville?
When it does not snow in Wilsonville?
How many hours of daylight does Wilsonville have in August?
When are sunrise and sunset in August in Wilsonville?
What month has the most sunshine in Wilsonville?
How long on average sun shines in August in Wilsonville?
How high is the UV index in August in Wilsonville?
Average temperature in August
Wilsonville, OR
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in August: 54°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in August
Wilsonville, 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
Wilsonville, OR
- Average wind speed in August: 3.8mph
The windiest months (with the highest average wind speed) are January and February (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in August
Wilsonville, OR
- Average humidity in August: 65%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is August (65%).
Average rainfall in August
Wilsonville, OR
- Average rainfall in August: 0.31"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.31").
Average rainfall days in August
Wilsonville, OR
- Average rainfall days in August: 4.4 days
The month with the highest number of rainy days is March (20.9 days).
The months with the least rainy days are July and August (4.4 days).
Average snowfall in August
Wilsonville, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Wilsonville, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Wilsonville, OR
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 11h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in August
Wilsonville, OR
- Average sunshine days in August: 24.6 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in August
Wilsonville, 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
Wilsonville, OR
- Average cloud cover in August: 21
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in August
Wilsonville, OR
- Average visibility in August: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Wilsonville, Oregon, USA
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