August weather forecastDowningtown, PA
August
Weather in August
In August, Downingtown experiences a slight dip in temperatures, allowing for some respite from the intense July heat. As the city moves towards the end of summer, temperatures still run high at approximately 81.1°F (27.3°C). Despite the heat, the weather remains pleasant, and the signature sunshine persists. As the August days whittle down, the city starts to brace itself for the beginning of fall in September.Temperature
Downingtown's entry into August measures an average high-temperature of a still moderately hot 81.1°F (27.3°C), closely parallel to the preceding month. Throughout the month of August, Downingtown witnesses an average temperature of 64.4°F (18°C).Heat index
During August, the heat index is estimated at a hot 86°F (30°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Consider that heat index readings are for situations in the shade and light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In August, the average relative humidity is 78%.Rainfall
August is the month with the most rainfall. Rain falls for 15.4 days and accumulates 3.31" (84mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Downingtown, Pennsylvania, the average length of the day in August is 13h and 42min.On the first day of August, sunrise is at 6:01 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:35 pm EDT.
Sunshine
In August, the average sunshine is 10h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 6 during August leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Downingtown, PA
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in August: 64.4°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in August
Downingtown, PA
- Average pressure in August: 29.99"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
Downingtown, PA
- Average wind speed in August: 5.2mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in August
Downingtown, PA
- Average humidity in August: 78%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in August
Downingtown, PA
- Average rainfall in August: 3.31"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in August
Downingtown, PA
- Average rainfall days in August: 15.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in August
Downingtown, PA
- Average snowfall in August: 0"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Downingtown, PA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Downingtown, 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 24min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in August
Downingtown, PA
- Average sunshine days in August: 13.2 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in August
Downingtown, PA
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (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
Downingtown, PA
- Average cloud cover in August: 34
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in August
Downingtown, PA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
