August weather forecastSaint Clair, PA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Saint Clair, Pennsylvania, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 59.5°F (15.3°C).Temperature
As July transitions into August, Saint Clair records an average high-temperature of a still moderately hot 79°F (26.1°C), showing a gentle shift from the preceding month. Saint Clair experiences an average temperature drop to a moderate 59.5°F (15.3°C) during August nights.Humidity
The average relative humidity in August is 80%.Rainfall
In Saint Clair, in August, it is raining for 16.2 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 172.9 rainfall days, and 34.21" (869mm) of precipitation is accumulated.Snowfall
In Saint Clair, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 45min.On the first day of August, sunrise is at 6:02 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:38 pm EDT.
Sunshine
In Saint Clair, the average sunshine in August is 10h.UV index
In Saint Clair, 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 average individuals.Note: In August, the maximum UV index of 5 suggests these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Saint Clair, PA
- Average high temperature in August: 79°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in August
Saint Clair, PA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Saint Clair, PA
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Saint Clair, PA
- Average humidity in August: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in August
Saint Clair, PA
- Average rainfall in August: 3.07"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in August
Saint Clair, PA
- Average rainfall days in August: 16.2 days
The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and November (10.8 days).
Average snowfall in August
Saint Clair, PA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Saint Clair, PA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Saint Clair, PA
- Average daylight in August: 13h and 42min
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 18min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).
Average sunshine days in August
Saint Clair, PA
- Average sunshine days in August: 12.2 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in August
Saint Clair, 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
Saint Clair, PA
- Average cloud cover in August: 34
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in August
Saint Clair, PA
- Average visibility in August: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
