August weather forecastDayton, OR
August
Weather in August
August, the last month of the summer in Dayton, is also a moderately hot month, with an average temperature fluctuating between 54.3°F (12.4°C) and 81.1°F (27.3°C).Temperature
August, known for its average high temperature of 81.1°F (27.3°C) and an average low temperature of 54.3°F (12.4°C), is the warmest month.Heat index
The heat index value during August is evaluated at 84.2°F (29°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
August is the least humid month, with an average relative humidity of 67%.Rainfall
The months with the least rainfall are July and August Rain falls for 4.6 days and accumulates 0.35" (9mm) of rain.Snowfall
In Dayton, snow does not fall in April through October.Daylight
The average length of the day in August is 14h and 2min.On the first day of the month, sunrise is at 5:58 am and sunset at 8:39 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:50 pm PDT.
Sunshine
With an average of 10.8h of sunshine, August has the most sunshine of the year.UV index
In Dayton, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during August leads to these advisories:
Undertake precautions - Guarding against sun damage is counselled. When the Sun is at its strongest around midday, find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dayton, 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 (44.1°F).
- Average low temperature in August: 54.3°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in August
Dayton, OR
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in August
Dayton, OR
- Average wind speed in August: 4mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in August
Dayton, OR
- Average humidity in August: 67%
The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (67%).
Average rainfall in August
Dayton, OR
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in August
Dayton, OR
- Average rainfall days in August: 4.6 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.6 days).
Average snowfall in August
Dayton, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Dayton, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2 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
Dayton, 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: 10h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in August
Dayton, OR
- Average sunshine days in August: 24.1 days
The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in August
Dayton, 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
Dayton, OR
- Average cloud cover in August: 23
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in August
Dayton, 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 and December (4mi).
