August weather forecastBethlehem, PA
August
Weather in August
August in Bethlehem still falls within the city's hot season, even with a slight decline in the temperature to 81°F (27.2°C). Compared to July, this period brings forth subtle hints of approaching autumn. Regardless, sunshine hours retain their extension, almost kissing the 14-hour mark, availing longer daylight for outdoor pursuits. This month is epitomized by warm, yet windswept days, with an average wind speed of 5mph (8km/h) contributing to tempered heat. Bethlehem's weather in August is best described as bittersweet, representing the height of summer slowly giving way to the milder autumn breeze.Temperature
August's average high-temperature stands at a still warm 81°F (27.2°C), showing little deviation from July's 83.5°F (28.6°C). Bethlehem records a steady low-temperature average of 61.5°F (16.4°C) during August.Heat index
For August, the heat index is appraised at a hot 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In Bethlehem, the average relative humidity in August is 77%.Rainfall
In Bethlehem, during August, the rain falls for 15.3 days and regularly aggregates up to 2.76" (70mm) of precipitation. In Bethlehem, during the entire year, the rain falls for 153 days and collects up to 26.81" (681mm) of precipitation.Snowfall
In Bethlehem, snow does not fall in June through September.Daylight
The average length of the day in August in Bethlehem is 13h and 44min.On the first day of August, sunrise is at 5:59 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:34 pm EDT.
Sunshine
The average sunshine in August is 9.9h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In August, a daily UV index of 5 turns into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Around midday, solar radiation is most harmful; hence, exposure should be limited. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Bethlehem, PA
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in August
Bethlehem, PA
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Bethlehem, PA
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Bethlehem, PA
- Average humidity in August: 77%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in August
Bethlehem, PA
- Average rainfall in August: 2.76"
The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in August
Bethlehem, PA
- Average rainfall days in August: 15.3 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in August
Bethlehem, PA
- Average snowfall in August: 0"
The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Bethlehem, PA
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Bethlehem, 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: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in August
Bethlehem, PA
- Average sunshine days in August: 13.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).
Average UV index in August
Bethlehem, PA
- Average UV index in August: 5
The months with the highest UV index are May, June and 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
Bethlehem, PA
- Average cloud cover in August: 35
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in August
Bethlehem, PA
- Average visibility in August: 5mi
The months with the highest visibility are April, June and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September, October and December (5mi).
