August weather forecastGreenhorn, OR
August
Weather in August
August, the last month of the summer in Greenhorn, is also a moderately hot month, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 49.6°F (9.8°C).Temperature
The arrival of August sees a recorded average high-temperature of a still moderately hot 81°F (27.2°C), showing little divergence from the previous month's conditions. A notable decrease from the day's highest temperature marks August, culminating in an average low of 49.6°F (9.8°C).Heat index
For August, the heat index is computed to be 80.6°F (27°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The least humid month is August, with an average relative humidity of 42%.Rainfall
In Greenhorn, in August, it is raining for 3.3 days, with typically 0.28" (7mm) of accumulated precipitation. Throughout the year, there are 127.7 rainfall days, and 17.09" (434mm) of precipitation is accumulated.Snowfall
In Greenhorn, snow does not fall in June through August.Daylight
In August, the average length of the day is 13h and 59min.On the first day of the month, sunrise is at 5:41 am and sunset at 8:19 pm. On the last day of August, in Greenhorn, sunrise is at 6:16 am and sunset at 7:31 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 12.1h of sunshine.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In August, the maximum UV index of 5 transforms into these recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Greenhorn, OR
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°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 (19.6°F).
Average pressure in August
Greenhorn, OR
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in August
Greenhorn, OR
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in August
Greenhorn, OR
- Average humidity in August: 42%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).
Average rainfall in August
Greenhorn, OR
- Average rainfall in August: 0.28"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in August
Greenhorn, OR
- Average rainfall days in August: 3.3 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in August
Greenhorn, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Greenhorn, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Greenhorn, 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: 12h and 6min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in August
Greenhorn, OR
- Average sunshine days in August: 24.8 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).
Average UV index in August
Greenhorn, 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, October, November and December (UV index 2).
Average cloud cover in August
Greenhorn, OR
- Average cloud cover in August: 9
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in August
Greenhorn, OR
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
