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 arrival of August sees an average high-temperature of a still warm 81°F (27.2°C), hardly diverging from July's 81.1°F (27.3°C). Significant variation from daytime temperatures marks August, with the month recording a nightly average of 52.9°F (11.6°C).Heat index
The heat index in August is calculated to be 80.6°F (27°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 45%.Rainfall
In Prineville, during August, the rain falls for 4.8 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 138.8 rainfall days, and 14.69" (373mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall.Daylight
The average length of the day in August is 13h and 58min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:27 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:40 pm PDT.
Sunshine
In August, the average sunshine is 11.9h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In August, the maximum UV index of 5 translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
What are the least humid months?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
Does it snow in August?
How many hours of daylight does Prineville have in August?
When is the sunrise / sunset in August?
How long on average sun shines in August?
How high is the UV index in August?
Average temperature in August
Prineville, OR
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in August: 52.9°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25°F).
Average pressure in August
Prineville, OR
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in August
Prineville, OR
- Average wind speed in August: 5.3mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in August
Prineville, OR
- Average humidity in August: 45%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in August
Prineville, OR
- Average rainfall in August: 0.43"
The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in August
Prineville, OR
- Average rainfall days in August: 4.8 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is July (4.2 days).
Average snowfall in August
Prineville, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Prineville, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (13.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Prineville, 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 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in August
Prineville, OR
- Average sunshine days in August: 22.9 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in August
Prineville, 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, March, November and December (UV index 2).
Average cloud cover in August
Prineville, OR
- Average cloud cover in August: 10
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in August
Prineville, OR
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Prineville, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location