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
Temperature records mark August as the warmest month, with highs averaging 84.7°F (29.3°C) and lows at 49.1°F (9.5°C).Heat index
The heat index in August is computed to be a hot 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
With an average relative humidity of 63%, August is the least humid month.Rainfall
In August, the rain falls for 2.5 days. Throughout August, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 135.3 rainfall days, and 23.54" (598mm) of precipitation is accumulated.Snowfall
In Selma, snow does not fall in May through October.Daylight
In Selma, the average length of the day in August is 13h and 50min.On the first day of August in Selma, sunrise is at 6:08 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:49 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.8h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 5 in August translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
How hot is it in August?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Selma have in August?
When is the sunrise / sunset in August?
What is the month with the most sunshine?
How many hours of sunshine does Selma have in August?
What is the UV index reading in August?
Average temperature in August
Selma, OR
- Average high temperature in August: 84.7°F
The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in August: 49.1°F
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure in August
Selma, OR
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in August
Selma, OR
- Average wind speed in August: 3.2mph
The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in August
Selma, OR
- Average humidity in August: 63%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall in August
Selma, OR
- Average rainfall in August: 0.2"
The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in August
Selma, OR
- Average rainfall days in August: 2.5 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in August
Selma, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Selma, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.8 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
Selma, OR
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 11h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in August
Selma, OR
- Average sunshine days in August: 26.5 days
The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in August
Selma, 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
Selma, OR
- Average cloud cover in August: 16
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in August
Selma, OR
- Average visibility in August: 6mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Selma, Oregon, USA
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