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
As July transitions into August, Southwest records an average high-temperature of a still moderately hot 80.6°F (27°C), showing a gentle shift from the preceding month. August in Southwest presents a pronounced difference from daytime highs, with a consistent average low-temperature of 58.6°F (14.8°C).Heat index
The average heat index in August is computed to be 84.2°F (29°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
April, July and August, with an average relative humidity of 77%, are the least humid months.Rainfall
In August, the rain falls for 17.4 days. Throughout August, 2.4" (61mm) of precipitation is accumulated. In Southwest, during the entire year, the rain falls for 185.4 days and collects up to 34.02" (864mm) of precipitation.Snowfall
In Southwest, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 43min.On the first day of August, sunrise is at 6:16 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 7:50 pm EDT.
Sunshine
With an average of 10h of sunshine, August has the most sunshine of the year.UV index
In Southwest, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 5 in August leads to these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Around midday, solar radiation is most harmful; hence, exposure should be limited. Experience reduced UV exposure by about half when donning a wide-brim hat.
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 many days does it rain in August?
When it does not snow in Southwest?
How many hours of daylight does Southwest have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Southwest have in August?
What is the UV index intensity in August?
Average temperature in August
Southwest, PA
- Average high temperature in August: 80.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in August: 58.6°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in August
Southwest, PA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Southwest, PA
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Southwest, PA
- Average humidity in August: 77%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in August
Southwest, PA
- Average rainfall in August: 2.4"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in August
Southwest, PA
- Average rainfall days in August: 17.4 days
The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in August
Southwest, PA
- Average snowfall in August: 0"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Southwest, PA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Southwest, PA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 10h
The month with the most sunshine is August (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 3h).
Average sunshine days in August
Southwest, PA
- Average sunshine days in August: 11.7 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in August
Southwest, PA
- 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
Southwest, PA
- Average cloud cover in August: 35
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in August
Southwest, PA
- Average visibility in August: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Southwest, Pennsylvania, USA
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