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
The transition from July to August sees average high-temperatures adjusting to a still moderately hot 79.9°F (26.6°C), from a not significantly different 82°F (27.8°C). Throughout August, the average low-temperature dips to a refreshing 61.7°F (16.5°C).Humidity
In August, the average relative humidity is 80%.Rainfall
The month with the most rainfall in Mount Gretna is August, when the rain falls for 14.7 days and typically aggregates up to 2.13" (54mm) of precipitation.Snowfall
In Mount Gretna, Pennsylvania, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 43min.On the first day of August, sunrise is at 6:04 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:38 pm EDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
In Mount Gretna, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during August leads to these advisories:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What are the temperatures in Mount Gretna in August?
What is the average humidity in August in Mount Gretna?
What is the wettest month in Mount Gretna?
How much does it rain in Mount Gretna in August?
When it does not snow in Mount Gretna?
How many hours of daylight does Mount Gretna have in August?
When is the sunrise / sunset in August in Mount Gretna?
How long on average sun shines in August in Mount Gretna?
What is the UV index intensity in August in Mount Gretna?
Average temperature in August
Mount Gretna, PA
- Average high temperature in August: 79.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in August: 61.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in August
Mount Gretna, 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
Mount Gretna, PA
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Mount Gretna, PA
- Average humidity in August: 80%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Mount Gretna, PA
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in August
Mount Gretna, PA
- Average rainfall days in August: 14.7 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in August
Mount Gretna, PA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Mount Gretna, PA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Mount Gretna, 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: 9h and 5min
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
Mount Gretna, PA
- Average sunshine days in August: 13.4 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in August
Mount Gretna, 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
Mount Gretna, PA
- Average cloud cover in August: 34
The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in August
Mount Gretna, PA
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Mount Gretna, Pennsylvania, USA
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